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Su JY, Zhang XY, Li X, Qu ML. Synthesis and luminescence properties of Yb3+, Tm3+ and Ho3+ co-doped SrGd2(WO4)2(MoO4)2 nano-crystal. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.12.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Spiridonova TS, Solodovnikov SF, Savina AA, Kadyrova YM, Solodovnikova ZA, Yudin VN, Stefanovich SY, Kotova IY, Khaikina EG, Komarov VY. Rb 9-xAg 3+xSc 2(WO 4) 9: a new glaserite-related structure type, rubidium disorder, ionic conductivity. ACTA CRYSTALLOGRAPHICA SECTION B, STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS 2020; 76:28-37. [PMID: 32831237 DOI: 10.1107/s2052520619015270] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Accepted: 11/12/2019] [Indexed: 06/11/2023]
Abstract
A new triple tungstate Rb9-xAg3+xSc2(WO4)9 (0 ≤ x ≤ 0.15) synthesized by solid state reactions and spontaneous crystallization from melts presents a new structure type related to those of Cs7Na5Yb2(MoO4)9 and Na13Sr2Ta2(PO4)9. The title compound in centrosymmetric space group Cmcm contains dimers of two ScO6 octahedra sharing corners with three bridging WO4 tetrahedra. Three pairs of opposite terminal WO4 tetrahedra are additionally linked by AgO2 dumbbells to form {Ag3[Sc2(WO4)9]}9- groups, which together with some rubidium ions are packed in pseudohexagonal glaserite-like layers parallel to (001), but stacking of the layers is different in these three structures. In the title structure, the layers stack with a shift along the b axis and their interlayer space contains disordered Rb+ cations partially substituted by Ag+ ions. Almost linear chains of incompletely filled close Rb3a-Rb3d positions (the shortest distances Rb-Rb are 0.46 to 0.64 Å) are found to locate approximately along the b axis. This positional disorder and the presence of wide common quadrangular faces of Rb2 and Rb3a-Rb3d coordination polyhedra favor two-dimensional ionic conductivity in the (001) plane with Rb+ and Ag+ carriers, which was confirmed with bond valence sum (BVS) maps. Electrical conductivity measurements on Rb9Ag3Sc2(WO4)9 ceramics revealed a first-order superionic phase transition at 570 K with a sharp increase in the electrical conductivity. The conductivity σi = 1.8 × 10-3 S cm-1 at 690 K is comparable with the value of 1.0 × 10-3 S cm-1 (500 K) observed earlier for rubidium-ion transport in pyrochlore-like ferroelectric RbNbWO6.
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Affiliation(s)
- Tatyana S Spiridonova
- Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Sakh'yanova St. 6, Ulan-Ude, Buryat Republic 670047, Russian Federation
| | - Sergey F Solodovnikov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Akad. Lavrentyev Ave. 3, Novosibirsk, 630090, Russian Federation
| | - Aleksandra A Savina
- Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Sakh'yanova St. 6, Ulan-Ude, Buryat Republic 670047, Russian Federation
| | - Yulia M Kadyrova
- Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Sakh'yanova St. 6, Ulan-Ude, Buryat Republic 670047, Russian Federation
| | - Zoya A Solodovnikova
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Akad. Lavrentyev Ave. 3, Novosibirsk, 630090, Russian Federation
| | - Vasiliy N Yudin
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Akad. Lavrentyev Ave. 3, Novosibirsk, 630090, Russian Federation
| | - Sergey Yu Stefanovich
- Lomonosov Moscow State University, Leninskie Gory 1, Moscow, 119991, Russian Federation
| | - Irina Yu Kotova
- Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Sakh'yanova St. 6, Ulan-Ude, Buryat Republic 670047, Russian Federation
| | - Elena G Khaikina
- Baikal Institute of Nature Management, Siberian Branch, Russian Academy of Sciences, Sakh'yanova St. 6, Ulan-Ude, Buryat Republic 670047, Russian Federation
| | - Vladislav Yu Komarov
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences, Akad. Lavrentyev Ave. 3, Novosibirsk, 630090, Russian Federation
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Shen D, Zhang Y, Zhang X, Wang Z, Zhang Y, Hu S, Yang J. Morphology/phase controllable synthesis of monodisperse ScVO4 microcrystals and tunable multicolor luminescence properties in Sc(La)VO4(PO4):Bi3+,Ln3+ phosphors. CrystEngComm 2018. [DOI: 10.1039/c8ce00951a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A facile one-pot hydrothermal approach was employed to prepare novel chocolate-like ScVO4 microcrystals using polyethylene glycol as an additive.
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Affiliation(s)
- Dingyi Shen
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Yufeng Zhang
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Xuemei Zhang
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Zhenling Wang
- The Key Laboratory of Rare Earth Functional Materials and Applications
- Zhoukou Normal University
- Zhoukou City
- China
| | | | - Shanshan Hu
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
| | - Jun Yang
- School of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715
- China
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Wang GQ, Li LY, Feng YN, Yu H, Zheng XH. Tb3+- and Yb3+-doped novel KBaLu(MoO4)3 crystals with disordered chained structure showing down- and up-conversion luminescence. CrystEngComm 2018. [DOI: 10.1039/c8ce00461g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tb3+/Yb3+ co-doped KBaLu(MoO4)3 with a highly disordered structure consisting of chains induces high color purity of primary green luminescence.
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Affiliation(s)
- G. Q. Wang
- College of Materials Science and Engineering
- Fuzhou University
- Fuzhou
- People's Republic of China
- Key Laboratory of Eco-materials Advanced Technology
| | - L. Y. Li
- College of Materials Science and Engineering
- Fuzhou University
- Fuzhou
- People's Republic of China
- Key Laboratory of Eco-materials Advanced Technology
| | - Y. N. Feng
- College of Materials Science and Engineering
- Fuzhou University
- Fuzhou
- People's Republic of China
| | - H. Yu
- College of Materials Science and Engineering
- Fuzhou University
- Fuzhou
- People's Republic of China
| | - X. H. Zheng
- College of Materials Science and Engineering
- Fuzhou University
- Fuzhou
- People's Republic of China
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