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Kazin PE, Zykin MA, Dyakonov AK, Vasiliev AV, Karpov MA, Gorbachev EA, Sleptsova AE, Jansen M. Dy 3+ single ion magnet in the extended inorganic solid Ca(Y,Dy)AlO 4. Chem Commun (Camb) 2022; 58:12572-12575. [DOI: 10.1039/d2cc03668a] [Citation(s) in RCA: 0] [Impact Index Per Article: 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
Confined in the extended solid with a widespread K2NiF4 structure type, cation Dy3+ exhibits magnetic bistability under a zero field.
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Affiliation(s)
- Pavel E. Kazin
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Mikhail A. Zykin
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Andrey K. Dyakonov
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | | | - Maxim A. Karpov
- Department of Chemistry, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Evgeny A. Gorbachev
- Department of Materials Science, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Anastasia E. Sleptsova
- Department of Materials Science, Lomonosov Moscow State University, Moscow 119991, Russia
| | - Martin Jansen
- Max Planck Institute for Solid State Research, Heisenbergstrasse 1, Stuttgart 70569, Germany
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Gorbachev EA, Kozlyakova ES, Trusov LA, Sleptsova AE, Zykin MA, Kazin PE. Design of modern magnetic materials with giant coercivity. Russ Chem Rev 2021. [DOI: 10.1070/rcr4989] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Abstract
The review is devoted to compounds and materials demonstrating extremely high magnetic hardness. The recent advances in the synthesis of modern materials for permanent magnets are considered, and a range of exotic compounds interesting for fundamental research is described. The key details of chemical composition, crystal structure and magnetic microstructure responsible for the appearance of high magnetic anisotropy and giant coercivity are analyzed. The challenges of developing the title materials are noted and strategies for their solution are discussed.
The bibliography includes 389 references.
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Trusov LA, Sleptsova AE, Duan J, Gorbachev EA, Kozlyakova ES, Anokhin EO, Eliseev AA, Karpov MA, Vasiliev AV, Brylev OA, Kazin PE. Glass-Ceramic Synthesis of Cr-Substituted Strontium Hexaferrite Nanoparticles with Enhanced Coercivity. Nanomaterials (Basel) 2021; 11:nano11040924. [PMID: 33916445 PMCID: PMC8065585 DOI: 10.3390/nano11040924] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 03/27/2021] [Accepted: 04/01/2021] [Indexed: 11/16/2022]
Abstract
Magnetically hard ferrites attract considerable interest due to their ability to maintain a high coercivity of nanosized particles and therefore show promising applications as nanomagnets ranging from magnetic recording to biomedicine. Herein, we report an approach to prepare nonsintered single-domain nanoparticles of chromium-substituted hexaferrite via crystallization of glass in the system SrO-Fe2O3-Cr2O3-B2O3. We have observed a formation of plate-like hexaferrite nanoparticles with diameters changing from 20 to 190 nm depending on the annealing temperature. We demonstrated that chromium substitution led to a significant improvement of the coercivity, which varied from 334 to 732 kA m-1 for the smallest and the largest particles, respectively. The results provide a new strategy for producing high-coercivity ferrite nanomagnets.
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Affiliation(s)
- Lev A. Trusov
- Faculty of Materials Science, MSU-BIT University, Shenzhen 517182, China; (J.D.); (E.A.G.); (O.A.B.)
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
- Correspondence:
| | | | - Jingtong Duan
- Faculty of Materials Science, MSU-BIT University, Shenzhen 517182, China; (J.D.); (E.A.G.); (O.A.B.)
| | - Evgeny A. Gorbachev
- Faculty of Materials Science, MSU-BIT University, Shenzhen 517182, China; (J.D.); (E.A.G.); (O.A.B.)
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
- Faculty of Materials Science, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Ekaterina S. Kozlyakova
- Faculty of Physics, Lomonosov Moscow State University, 119991 Moscow, Russia;
- Laboratory of Functional Quantum Materials, National University of Science and Technology “MISiS”, 119049 Moscow, Russia
| | - Evgeny O. Anokhin
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
- Faculty of Materials Science, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Artem A. Eliseev
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
| | - Maxim A. Karpov
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
| | - Alexander V. Vasiliev
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
| | - Oleg A. Brylev
- Faculty of Materials Science, MSU-BIT University, Shenzhen 517182, China; (J.D.); (E.A.G.); (O.A.B.)
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
- Faculty of Materials Science, Lomonosov Moscow State University, 119991 Moscow, Russia;
| | - Pavel E. Kazin
- Faculty of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia; (E.O.A.); (A.A.E.); (M.A.K.); (A.V.V.); (P.E.K.)
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Anokhin EO, Trusov LA, Kozlov DA, Chumakov RG, Sleptsova AE, Uvarov OV, Kozlov MI, Petukhov DI, Eliseev AA, Kazin PE. Silica coated hard-magnetic strontium hexaferrite nanoparticles. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2019.06.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Gorbachev EA, Trusov LA, Sleptsova AE, Anokhin EO, Zaitsev DD, Vasiliev AV, Eliseev AA, Kazin PE. Synthesis and magnetic properties of the exchange-coupled SrFe10.7Al1.3O19/Co composite. Mendeleev Communications 2018. [DOI: 10.1016/j.mencom.2018.07.020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Trusov LA, Gorbachev EA, Lebedev VA, Sleptsova AE, Roslyakov IV, Kozlyakova ES, Vasiliev AV, Dinnebier RE, Jansen M, Kazin PE. Ca–Al double-substituted strontium hexaferrites with giant coercivity. Chem Commun (Camb) 2018; 54:479-482. [DOI: 10.1039/c7cc08675j] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [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
Ca–Al double-substituted strontium hexaferrites exhibit record-high coercivities up to 21.3 kOe.
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Affiliation(s)
- Lev A. Trusov
- Faculty of Chemistry
- Moscow State University
- Moscow
- Russia
| | | | | | | | | | | | | | | | - Martin Jansen
- Max Planck Institute for Solid State Research
- Stuttgart
- Germany
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