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1
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Vasiliev AN, Berdonosov PS, Kozlyakova ES, Maximova OV, Murtazoev AF, Dolgikh VA, Lyssenko KA, Pchelkina ZV, Gorbunov DI, Chung SH, Koo HJ, Whangbo MH. Observation of a 1/3 magnetization plateau in Pb 2Cu 10O 4(SeO 3) 4Cl 7 arising from (Cu 2+) 7 clusters of corner-sharing (Cu 2+) 4 tetrahedra. Dalton Trans 2022; 51:15017-15021. [PMID: 36112086 DOI: 10.1039/d2dt02316d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mixed-valence compound Pb2Cu10O4(SeO3)4Cl7 has a complex structure consisting of one nonmagnetic Cu+ (S = 0) ion and four nonequivalent magnetic Cu2+ (S = 1/2) ions. It exhibits antiferromagnetic ordering at TN = 10.2 K. At a temperature below TN, a sequence of spin-flop transition at Bspin-flop = 1.3 T and 1/3 plateau formation at Bspin-flip = 4.4 K is observed in the magnetization curve M(B). The 1/3 magnetization plateau persists at least up to 53.5 T. The spin exchanges of Pb2Cu10O4(SeO3)4Cl7 evaluated by performing energy-mapping analysis based on DFT+U calculations show that the magnetic properties of Pb2Cu10O4(SeO3)4Cl7 are described by the (Cu2+)7 cluster of corner-sharing (Cu2+)4 tetrahedra, and that each (Cu2+)7 cluster has a S = 3/2 spin arrangement in the ground state. The 1/3 magnetization plateau observed for Pb2Cu10O4(SeO3)4Cl7 is explained by the field-induced flip of every second (Cu2+)7 cluster within a unit cell.
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Affiliation(s)
- A N Vasiliev
- Lomonosov Moscow State University, Moscow 119991, Russia. .,National University of Science and Technology "MISiS", Moscow 119049, Russia
| | - P S Berdonosov
- Lomonosov Moscow State University, Moscow 119991, Russia. .,National University of Science and Technology "MISiS", Moscow 119049, Russia
| | - E S Kozlyakova
- Lomonosov Moscow State University, Moscow 119991, Russia. .,National University of Science and Technology "MISiS", Moscow 119049, Russia
| | - O V Maximova
- Lomonosov Moscow State University, Moscow 119991, Russia.
| | - A F Murtazoev
- Lomonosov Moscow State University, Moscow 119991, Russia.
| | - V A Dolgikh
- Lomonosov Moscow State University, Moscow 119991, Russia.
| | - K A Lyssenko
- Lomonosov Moscow State University, Moscow 119991, Russia.
| | - Z V Pchelkina
- Ural Federal University, Ekaterinburg 620002, Russia.,Institute of Metal Physics, RAS, Ekaterinburg 620108, Russia
| | - D I Gorbunov
- Hochfeld-Magnetlabor Dresden (HLD-EMFL), Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
| | - S H Chung
- Kyung Hee University, Seoul 02447, Korea
| | - H-J Koo
- Kyung Hee University, Seoul 02447, Korea
| | - M-H Whangbo
- Kyung Hee University, Seoul 02447, Korea.,North Carolina State University, Raleigh, NC 27695, USA
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2
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Bazhenova TA, Kopotkov VA, Korchagin DV, Manakin YV, Zorina LV, Simonov SV, Yakushev IA, Mironov VS, Vasiliev AN, Maximova OV, Yagubskii EB. A Series of Novel Pentagonal-Bipyramidal Erbium(III) Complexes with Acyclic Chelating N3O2 Schiff-Base Ligands: Synthesis, Structure, and Magnetism. Molecules 2021; 26:6908. [PMID: 34834001 PMCID: PMC8622354 DOI: 10.3390/molecules26226908] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 11/12/2021] [Accepted: 11/13/2021] [Indexed: 11/29/2022] Open
Abstract
A series of six seven-coordinate pentagonal-bipyramidal (PBP) erbium complexes, with acyclic pentadentate [N3O2] Schiff-base ligands, 2,6-diacetylpyridine bis-(4-methoxybenzoylhydrazone) [H2DAPMBH], or 2,6-diacethylpyridine bis(salicylhydrazone) [H4DAPS], and various apical ligands in different charge states were synthesized: [Er(DAPMBH)(C2H5OH)Cl] (1); [Er(DAPMBH)(H2O)Cl]·2C2H5OH (2); [Er(DAPMBH)(CH3OH)Cl] (3); [Er(DAPMBH)(CH3OH)(N3)] (4); [(Et3H)N]+[Er(H2DAPS)Cl2]- (5); and [(Et3H)N]+[Y0.95Er0.05(H2DAPS)Cl2]- (6). The physicochemical properties, crystal structures, and the DC and AC magnetic properties of 1-6 were studied. The AC magnetic measurements revealed that most of Compounds 1-6 are field-induced single-molecule magnets, with estimated magnetization energy barriers, Ueff ≈ 16-28 K. The experimental study of the magnetic properties was complemented by theoretical analysis based on ab initio and crystal field calculations. An experimental and theoretical study of the magnetism of 1-6 shows the subtle impact of the type and charge state of the axial ligands on the SMM properties of these complexes.
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Affiliation(s)
- Tamara A. Bazhenova
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
| | - Vyacheslav A. Kopotkov
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
| | - Denis V. Korchagin
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
| | - Yuriy V. Manakin
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
| | - Leokadiya V. Zorina
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
- Institute of Solid State Physics, ISSP RAS, Chernogolovka 142432, Russia
| | - Sergey V. Simonov
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
- Institute of Solid State Physics, ISSP RAS, Chernogolovka 142432, Russia
| | - Ilya A. Yakushev
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
- Kurnakov Institute of General and Inorganic Chemistry, IGIC RAS, Moscow 119333, Russia
| | - Vladimir S. Mironov
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
- Shubnikov Institute of Crystallography of Federal Scientific Research Centre “Crystallography and Photonics” RAS, Moscow 119333, Russia
| | - Alexander N. Vasiliev
- Laboratory of Quantum Functional Materials, National University of Science and Technology “MISiS”, Moscow 119049, Russia;
- Lomonosov Moscow State University, Moscow 119991, Russia;
| | | | - Eduard B. Yagubskii
- Institute of Problems of Chemical Physics, IPCP RAS, Chernogolovka 142432, Russia; (T.A.B.); (D.V.K.); (Y.V.M.); (L.V.Z.); (S.V.S.); (I.A.Y.); (V.S.M.); (E.B.Y.)
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3
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Bazhenova TA, Zorina LV, Simonov SV, Mironov VS, Maximova OV, Spillecke L, Koo C, Klingeler R, Manakin YV, Vasiliev AN, Yagubskii EB. The first pentagonal-bipyramidal vanadium(III) complexes with a Schiff-base N 3O 2 pentadentate ligand: synthesis, structure and magnetic properties. Dalton Trans 2020; 49:15287-15298. [PMID: 33112327 DOI: 10.1039/d0dt03092a] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A series of three mononuclear pentagonal-bipyramidal V(iii) complexes with the equatorial pentadentate N3O2 ligand (2,6-diacethylpyridinebis(benzoylhydrazone), H2DAPBH) in the different charge states (H2DAPBH0, HDAPBH1-, DAPBH2-) and various apical ligands (Cl-, CH3OH, SCN-) were synthesized and characterized structurally and magnetically: [V(H2DAPBH)Cl2]Cl·C2H5OH (1), [V(HDAPBH)(NCS)2]·0.5CH3CN·0.5CH3OH (2) and [V(DAPBH)(CH3OH)2]Cl·CH3OH (3). All three complexes reveal paramagnetic behavior, resulting from isolated S = 1 spins with positive zero-field splitting energy expected for the high-spin ground state of the V3+ (3d2) ion in a PBP coordination. Detailed high-field EPR measurements for compound 3 show that its magnetic properties are best described by using the spin Hamiltonian with the positive ZFS energy (D = +4.1 cm-1) and pronounced dimer-like antiferromagnetic spin coupling (J = -1.1 cm-1). Theoretical analysis based on superexchange calculations reveals that the long-range spin coupling between distant V3+ ions (8.65 Å) is mediated through π-stacking contacts between the planar DAPBH2- ligands of two neighboring [V(DAPBH)(CH3OH)2]+ complexes.
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Affiliation(s)
- Tamara A Bazhenova
- Institute of Problems of Chemical Physics, RAS, Chernogolovka 142432, Russia.
| | | | - Sergey V Simonov
- Institute of Solid State Physics, RAS, Chernogolovka 142432, Russia
| | - Vladimir S Mironov
- Institute of Problems of Chemical Physics, RAS, Chernogolovka 142432, Russia. and Shubnikov Institute of Crystallography of Federal Scientific Research Centre "Crystallography and Photonics", RAS, Moscow, Russia.
| | - Olga V Maximova
- Institute of Problems of Chemical Physics, RAS, Chernogolovka 142432, Russia. and Lomonosov Moscow State University, Moscow 119991, Russia and National University of Science and Technology "MISiS", Moscow 119049, Russia
| | - Lena Spillecke
- Kirchhoff Institute for Physics, Heidelberg University, 69120 Heidelberg, Germany.
| | - Changhyun Koo
- Kirchhoff Institute for Physics, Heidelberg University, 69120 Heidelberg, Germany.
| | - Rüdiger Klingeler
- Kirchhoff Institute for Physics, Heidelberg University, 69120 Heidelberg, Germany. and Centre for Advanced Materials (CAM), Heidelberg University, 69120 Heidelberg, Germany
| | - Yuriy V Manakin
- Institute of Problems of Chemical Physics, RAS, Chernogolovka 142432, Russia.
| | - Alexander N Vasiliev
- Lomonosov Moscow State University, Moscow 119991, Russia and National Research South Ural State University, Chelyabinsk 454080, Russia
| | - Eduard B Yagubskii
- Institute of Problems of Chemical Physics, RAS, Chernogolovka 142432, Russia.
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4
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Bazhenova TA, Mironov VS, Yakushev IA, Svetogorov RD, Maximova OV, Manakin YV, Kornev AB, Vasiliev AN, Yagubskii EB. End-to-End Azido-Bridged Lanthanide Chain Complexes (Dy, Er, Gd, and Y) with a Pentadentate Schiff-Base [N 3O 2] Ligand: Synthesis, Structure, and Magnetism. Inorg Chem 2019; 59:563-578. [PMID: 31858796 DOI: 10.1021/acs.inorgchem.9b02825] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The syntheses, structure and magnetic properties are reported for five novel 1D polymeric azido-bridged lanthanide complexes with the general formula {[Ln(DAPMBH)(N3)C2H5OH]C2H5OH}n where H2DAPMBH = 2,6-diacetylpyridine bis(4-methoxybenzoylhydrazone)-a new pentadentate pyridine-base [N3O2] ligand and Ln = Dy (1), Y0.930Dy0.070 (2), Er (3), Y0.923Er0.077 (4), and Gd (5). X-ray diffraction analysis of 1-5 show that the central lanthanide atoms are eight-coordinated with the N5O3 donor set originating from the ligand DAPMBH, one coordinated ethanol molecule and two end-to-end type N3- bridges connecting the metal centers into infinite chain. The [LnN5O3] coordination polyhedron can be regarded as a distorted dodecahedron (D2d). AC magnetic measurements revealed that compounds 1-4 show field-induced single-molecule magnet behavior, with estimated energy barriers Ueff ≈ 47-17 K. The experimental study of magnetic properties was complemented by theoretical analysis based on crystal-field calculations. Direct current magnetic susceptibility studies revealed marginally weak intrachain exchange interaction between Ln3+ ions mediated by the end-to-end azide bridging groups (J ≈ -0.015 cm-1 for 5). Comparative analysis of static and dynamic magnetic properties of magnetically concentrated (1, 3) and diluted (2, 4) Dy and Er compounds showed that, despite fascinating 1D azido-bridged chain structure, compounds 1 and 3 are not single-chain magnets; their magnetic behavior is largely due to single-ion magnetic anisotropy of individual Ln3+ ions.
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Affiliation(s)
- Tamara A Bazhenova
- Institute of Problems of Chemical Physics IPCP RAS , Chernogolovka 142432 , Russia
| | - Vladimir S Mironov
- Institute of Problems of Chemical Physics IPCP RAS , Chernogolovka 142432 , Russia.,Shubnikov Institute of Crystallography of Federal Scientific Research Centre "Crystallography and Photonics" RAS , Moscow 119333 , Russia
| | - Ilya A Yakushev
- Institute of Problems of Chemical Physics IPCP RAS , Chernogolovka 142432 , Russia.,Kurnakov Institute of General and Inorganic Chemistry IGIC RAS , Moscow 119991 , Russia.,National Research Center "Kurchatov Institute" , Moscow 123182 , Russia
| | | | - Olga V Maximova
- Institute of Problems of Chemical Physics IPCP RAS , Chernogolovka 142432 , Russia.,Lomonosov Moscow State University , Moscow 119991 , Russia.,National University of Science and Technology "MISiS" , Moscow 119049 , Russia
| | - Yuriy V Manakin
- Institute of Problems of Chemical Physics IPCP RAS , Chernogolovka 142432 , Russia
| | - Alexey B Kornev
- Institute of Problems of Chemical Physics IPCP RAS , Chernogolovka 142432 , Russia
| | - Alexander N Vasiliev
- Lomonosov Moscow State University , Moscow 119991 , Russia.,National University of Science and Technology "MISiS" , Moscow 119049 , Russia.,National Research South Ural State University , Chelyabinsk 454080 , Russia
| | - Eduard B Yagubskii
- Institute of Problems of Chemical Physics IPCP RAS , Chernogolovka 142432 , Russia
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5
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Aksenov SM, Borovikova EY, Mironov VS, Yamnova NA, Volkov AS, Ksenofontov DA, Gurbanova OA, Dimitrova OV, Deyneko DV, Zvereva EA, Maximova OV, Krivovichev SV, Burns PC, Vasiliev AN. Rb 2CaCu 6(PO 4) 4O 2, a novel oxophosphate with a shchurovskyite-type topology: synthesis, structure, magnetic properties and crystal chemistry of rubidium copper phosphates. Acta Crystallogr B Struct Sci Cryst Eng Mater 2019; 75:903-913. [PMID: 32830770 DOI: 10.1107/s2052520619008527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 06/14/2019] [Indexed: 06/11/2023]
Abstract
Single crystals of Rb2CaCu6(PO4)4O2 were synthesized by a hydrothermal method in the multicomponent system CuCl2-Ca(OH)2-RbCl-B2O3-Rb3PO4. The synthesis was carried out in the temperature range from 690 to 700 K and at the general pressure of 480-500 atm [1 atm = 101.325 kPa] from the mixture in the molar ratio 2CuO:CaO:Rb2O:B2O3:P2O5. The crystals studied by single-crystal X-ray analysis were found to be monoclinic, space group C2, a = 16.8913 (4), b = 5.6406 (1), c = 8.3591 (3) Å, β = 93.919 (3)°, V = 794.57 (4) Å3. The crystal structure of Rb2CaCu6(PO4)4O2 is similar to that of shchurovskyite and dmisokolovite and is based upon a heteropolyhedral open framework formed by polar layers of copper polyhedra linked via isolated PO4 tetrahedra. The presence of well-isolated 2D heteropolyhedral layers in the title compound suggests low-dimensional magnetic behavior which is masked, however, by the fierce competition between multiple ferromagnetic and antiferromagnetic exchange interactions. At TC = 25 K, Rb2CaCu6(PO4)4O2 reaches a magnetically ordered state with large residual magnetization.
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Affiliation(s)
- Sergey M Aksenov
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | | | - Vladimir S Mironov
- Institute of Crystallography of FSRC `Crystallography and Photonics', RAS, Leninskii pr. 59, Moscow, 119333, Russian Federation
| | - Natalia A Yamnova
- Moscow State University, Vorobievy Gory, Moscow, 119991, Russian Federation
| | - Anatoly S Volkov
- Moscow State University, Vorobievy Gory, Moscow, 119991, Russian Federation
| | | | - Olga A Gurbanova
- Moscow State University, Vorobievy Gory, Moscow, 119991, Russian Federation
| | - Olga V Dimitrova
- Moscow State University, Vorobievy Gory, Moscow, 119991, Russian Federation
| | - Dina V Deyneko
- Moscow State University, Vorobievy Gory, Moscow, 119991, Russian Federation
| | - Elena A Zvereva
- Moscow State University, Vorobievy Gory, Moscow, 119991, Russian Federation
| | - Olga V Maximova
- Moscow State University, Vorobievy Gory, Moscow, 119991, Russian Federation
| | - Sergey V Krivovichev
- St Petersburg State University, University Embankment 7/9, St Petersburg, 199034, Russian Federation
| | - Peter C Burns
- Department of Civil and Environmental Engineering and Earth Sciences, University of Notre Dame, Notre Dame, Indiana 46556, USA
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6
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Kazakova AV, Tiunova AV, Korchagin DV, Shilov GV, Yagubskii EB, Zverev VN, Yang SC, Lin J, Lee J, Maximova OV, Vasiliev AN. The First Conducting Spin‐Crossover Compound Combining a Mn
III
Cation Complex with Electroactive TCNQ Demonstrating an Abrupt Spin Transition with a Hysteresis of 50 K. Chemistry 2019; 25:10204-10213. [DOI: 10.1002/chem.201901792] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 05/28/2019] [Indexed: 11/07/2022]
Affiliation(s)
- Anna V. Kazakova
- Institute of problems of Chemical PhysicsRAS Chernogolovka 142432 Russia
| | - Aleksandra V. Tiunova
- Institute of problems of Chemical PhysicsRAS Chernogolovka 142432 Russia
- Lomonosov Moscow State University Moscow 119991 Russia
| | - Denis V. Korchagin
- Institute of problems of Chemical PhysicsRAS Chernogolovka 142432 Russia
| | - Gennady V. Shilov
- Institute of problems of Chemical PhysicsRAS Chernogolovka 142432 Russia
| | | | - Vladimir N. Zverev
- Institute of Solid State PhysicsRAS Chernogolovka 142432 Russia
- Moscow Institute of Physics and Technology Dolgoprudnyi 141700 Russia
| | - Shun Cheng Yang
- Institute of PhysicsNational Chiao Tung University Hsinchu 30010 Taiwan
| | - Jiunn‐Yuan Lin
- Institute of PhysicsNational Chiao Tung University Hsinchu 30010 Taiwan
- Center for Emergent Functional Matter ScienceNational Chiao Tung University Hsinchu 30010 Taiwan
| | - Jyh‐Fu Lee
- National Synchrotron Radiation Research Center Hsinchu 30076 Taiwan
| | - Olga V. Maximova
- Lomonosov Moscow State University Moscow 119991 Russia
- National University of Science and Technology “MISIS” Moscow 119991 Russia
| | - Alexander N. Vasiliev
- Lomonosov Moscow State University Moscow 119991 Russia
- National University of Science and Technology “MISIS” Moscow 119991 Russia
- National Research South Ural State University Chelyabinsk 454080 Russia
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7
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Kirsanova MA, Aksyonov DA, Maximova OV, Shvanskaya LV, Vasiliev AN, Tsirlin AA, Abakumov AM. Crystal Structures and Low-Dimensional Ferromagnetism of Sodium Nickel Phosphates Na 5Ni 2(PO 4) 3·H 2O and Na 6Ni 2(PO 4) 3OH. Inorg Chem 2019; 58:610-621. [PMID: 30565920 DOI: 10.1021/acs.inorgchem.8b02791] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Two new sodium nickel phosphates, Na5Ni2(PO4)3·H2O (I) and Na6Ni2(PO4)3OH (II), have been synthesized hydrothermally and characterized by synchrotron X-ray diffraction, electron diffraction, low-temperature thermodynamic and magnetic measurements, and ab initio calculations. Unlike the majority of Ni2+ compounds, I and II show predominant ferromagnetic exchange couplings. I crystallizes in the monoclinic space group P21/ n ( a = 14.0395(4) Å, b = 5.1847(14) Å, c = 16.4739(4) Å, β = 110.4186(14)°) and features chains of ferromagnetically coupled Ni2+ ions. In II with the orthorhombic space group Pcmb ( a = 7.5007(15) Å, b = 21.4661(4) Å, c = 7.1732(15) Å), the ferromagnetically coupled Ni2+ ions form dimers arranged on a spin ladder. Both compounds represent rare examples of quasi-one-dimensional ferromagnets. Structural features behind this unusual magnetic behavior are discussed.
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Affiliation(s)
- Maria A Kirsanova
- Skolkovo Institute of Science and Technology , Moscow 143026 , Russia
| | - Dmitry A Aksyonov
- Skolkovo Institute of Science and Technology , Moscow 143026 , Russia
| | - Olga V Maximova
- Lomonosov Moscow State University , Moscow 119991 , Russia.,National University of Science and Technology "MISiS" , Moscow 119049 , Russia
| | - Larisa V Shvanskaya
- Lomonosov Moscow State University , Moscow 119991 , Russia.,National University of Science and Technology "MISiS" , Moscow 119049 , Russia
| | - Alexander N Vasiliev
- Lomonosov Moscow State University , Moscow 119991 , Russia.,National University of Science and Technology "MISiS" , Moscow 119049 , Russia.,National Research South Ural State University , Chelyabinsk 454080 , Russia
| | - Alexander A Tsirlin
- Experimental Physics VI, Center for Electronic Correlations and Magnetism , University of Augsburg , 86135 Augsburg , Germany
| | - Artem M Abakumov
- Skolkovo Institute of Science and Technology , Moscow 143026 , Russia
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8
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Spitsyna NG, Blagov MA, Lazarenko VA, Zorina LV, Vasiliev AN, Krapivin VB, Svetogorov RD, Maximova OV, Simonov SV, Yagubskii EB. Spin-crossover behavior of neutral iron(iii) complexes with salicylaldehyde thio-, seleno- and semicarbazone ligands: experiment and theoretical analysis. Dalton Trans 2019; 48:9328-9336. [DOI: 10.1039/c9dt01404g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A novel neutral complex [FeIII(Hsemsal)(semsal)]·3H2O was synthesized and its magnetic properties, and crystal and electronic structures were studied.
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Affiliation(s)
| | - Maxim A. Blagov
- Institute of Problems of Chemical Physics
- RAS
- Chernogolovka
- Russia
- Lomonosov Moscow State University
| | | | | | - Alexander N. Vasiliev
- Lomonosov Moscow State University
- Moscow 119991
- Russia
- National University of Science and Technology “MISIS”
- Moscow 119991
| | - Vladimir B. Krapivin
- Institute of Problems of Chemical Physics
- RAS
- Chernogolovka
- Russia
- National Research Center “Kurchatov institute”
| | | | - Olga V. Maximova
- Lomonosov Moscow State University
- Moscow 119991
- Russia
- National University of Science and Technology “MISIS”
- Moscow 119991
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9
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Kushch ND, Buravov LI, Kushch PP, Shilov GV, Yamochi H, Ishikawa M, Otsuka A, Shakin AA, Maximova OV, Volkova OS, Vasiliev AN, Yagubskii EB. Multifunctional Compound Combining Conductivity and Single-Molecule Magnetism in the Same Temperature Range. Inorg Chem 2018; 57:2386-2389. [PMID: 29465234 DOI: 10.1021/acs.inorgchem.7b03152] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report the first highly conducting single-molecule magnet, (BEDO)4[ReF6]·6H2O [1; BEDO = bis(ethylenedioxo)tetrathiafulvalene], whose conductivity and single-molecule magnetism coexist in the same temperature range. The compound was synthesized by BEDO electrocrystallization in the presence of (Ph4P)2[ReF6]·2H2O and characterized by crystallography and measurements of the conductivity and alternating-current magnetic susceptibility.
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Affiliation(s)
- Nataliya D Kushch
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
| | - Lev I Buravov
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
| | - Pavel P Kushch
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
| | - Gennadii V Shilov
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
| | - Hideki Yamochi
- Division of Chemistry, Graduate School of Science , Kyoto University , Sakyo-ku, Kyoto 606-8502 , Japan.,Research Center for Low Temperature and Materials Sciences , Kyoto University , Sakyo-ku, Kyoto 606-8501 , Japan
| | - Manabu Ishikawa
- Research Center for Low Temperature and Materials Sciences , Kyoto University , Sakyo-ku, Kyoto 606-8501 , Japan
| | - Akihiro Otsuka
- Division of Chemistry, Graduate School of Science , Kyoto University , Sakyo-ku, Kyoto 606-8502 , Japan.,Research Center for Low Temperature and Materials Sciences , Kyoto University , Sakyo-ku, Kyoto 606-8501 , Japan
| | - Alexander A Shakin
- National University of Science and Technology "MISiS" , Moscow 119049 , Russia
| | - Olga V Maximova
- National University of Science and Technology "MISiS" , Moscow 119049 , Russia.,Lomonosov Moscow State University , Moscow 119991 , Russia
| | - Olga S Volkova
- National University of Science and Technology "MISiS" , Moscow 119049 , Russia.,Lomonosov Moscow State University , Moscow 119991 , Russia
| | - Alexander N Vasiliev
- National University of Science and Technology "MISiS" , Moscow 119049 , Russia.,Lomonosov Moscow State University , Moscow 119991 , Russia.,National Research South Ural State University , Chelyabinsk 454080 , Russia
| | - Eduard B Yagubskii
- Institute of Problems of Chemical Physics , Russian Academy of Sciences , Chernogolovka 142432 , Russia
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Kytin VG, Maximova OV, Kulbachinskii VA, Burova LI, Kaul AR, Bandyopadhya S, Ahmed A, Banerjee A. Superparamagnetic behavior of MOCVD grown ZnO:Co films. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201818506009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Temperature and field dependences of magnetization have been measured for Co-doped ZnO films with different Co content grown by MOCVD on sapphire substrates. Measured field dependences of magnetization show ferromagnetic-like hysteresis loops and paramagnetic contribution. Coercive field decreases with an increase of Co content and temperature. The difference between temperature dependences of magnetization measured in zero field cooling and field cooling conditions was observed in the temperature range from 2 K to 300 K indicating superparamagnetic behaviour of the films. The distribution of blocking temperatures extracted from the temperature dependences of magnetization is broad and shifts to the low blocking temperatures with an increase of Co content
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