2013年9月
Solid Solutions of Pauli-Paramagnetic CaCu3V4O12 and Antiferromagnetic CaMn3V4O12
INORGANIC CHEMISTRY
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- 巻
- 52
- 号
- 18
- 開始ページ
- 10610
- 終了ページ
- 10614
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1021/ic401633c
- 出版者・発行元
- AMER CHEMICAL SOC
Solid solutions of Pauli-paramagnetic Ca-Cu3V4O12 and antiferromagnetic CaMn3V4O12 were prepared by a high-pressure synthesis technique. All samples crystallized in the A-site-ordered perovskite structure with isovalent Cu2+ and Mn2+ ions at the square-planar A' site. The V ion at the B site kept a charge state close to +4 in all of the solid solutions, and the electrons of V were delocalized and contributed to the metallic properties. The substitution of Mn2+ for Cu2+ in CaCu3V4O12, where both Cu and V electrons were delocalized, produced the S = 5/2 localized moments, and the spins at the Mn site interacted antiferromagnetically. Spin-glass-like magnetic behaviors due to the random distribution of Cu/Mn ions at the A' site were observed at intermediate compositions of the solid solution, whereas the antiferromagnetic transition was observed at the end composition CaMn3V4O12.
- リンク情報
- ID情報
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- DOI : 10.1021/ic401633c
- ISSN : 0020-1669
- eISSN : 1520-510X
- PubMed ID : 23978188
- Web of Science ID : WOS:000330098300049