Crystal structure and magnetic properties of LaCa0.143 (4)O0.857 (4)F0.143 (4)Bi0.857 (4)S2.
The synthesis, structure, and magnetic properties of lithium dibarium calcium oxide fluoride di-sulfide are reported. LaCa0.143 (4)O0.857 (4)F0.143 (4)Bi0.857 (4)S2 crystallizes in the tetra-gonal space group P4/nmm. The structure exhibits disorder of the Ca(2+) and Bi(3+) cations, and the O(2-) and F(-) anions. The structure is composed of a stacking of [(O,F)2La2] layers and double [(Bi,Ca)S2] layers. Magnetic property measurements indicate a very small magnetization at 300 K and the existence of weak ferromagnetism at 2 K.
State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China; Department of Physics, Shanghai University, Shanghai 200444, People's Republic of China.
Rongtie
R
Huang
State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China.
Hui
H
Zhang
Department of Physics, Shanghai University, Shanghai 200444, People's Republic of China.
Dong
D
Wang
Department of Physics, Shanghai University, Shanghai 200444, People's Republic of China.
Chuanbing
C
Cai
State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, People's Republic of China.
Fuqiang
F
Huang
crystal structure; disorder; magnetic properties