期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 3, 页码 756-759出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201810161
关键词
high-pressure synthesis; oxychalcogenide; spin states; square lattice; strain
资金
- KAKENHI [JP16H06438-40, JP16K21724, JP16H02267]
- CREST [JPMJCR1421]
- JSPS Core-to-Core Program
Square-planar coordinate Ni2+ ions in oxides are exclusively limited to a low-spin state (S=0) owing to extensive crystal field splitting. Layered oxychalcogenides A(2)Ni(II)O(2)Ag(2)Se(2) (A=Sr, Ba) with the S=1 NiO2 square lattice are now reported. The structural analysis revealed that the Ni2+ ion is under-bonded by a significant tensile strain from neighboring Ag2Se2 layers, leading to the reduction in crystal field splitting. Ba2NiO2Ag2Se2 exhibits a G-type spin order at 130 K, indicating fairly strong in-plane interactions. The high-pressure synthesis employed here possibly assists the expansion of NiO2 square lattice by taking the advantage of the difference in compressibility in oxide and selenide layers.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据