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Ba 3 FeS 4 Br: A 0D Iron‐Based Chalcohalide with Unusual Magnetic Properties
Author(s) -
Li Xiaoshuang,
Li Chao,
Kang Lei,
Wu Yuxiao,
Lin Zheshuai,
Yao Jiyong,
Wu Yicheng
Publication year - 2016
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201500946
Subject(s) - chemistry , antiferromagnetism , orthorhombic crystal system , magnetization , crystallography , spins , magnetic susceptibility , crystal structure , condensed matter physics , magnetic field , physics , quantum mechanics
A new 0D iron‐based magnetic chalcohalide, Ba 3 FeS 4 Br, has been prepared by the spontaneous crystallization method. It crystallizes in the orthorhombic space group Pnma . Interestingly, the structure contains a Ba–Br reticulate structure in which isolated FeS 4 tetrahedra are located. Its band gap was experimentally determined to be 1.65 eV. Despite the large separation between the Fe atoms, with the shortest distance being more than 6.33(2) Å, temperature‐dependent magnetic susceptibility and field‐dependent magnetization measurements on Ba 3 FeS 4 Br unexpectedly showed an antiferromagnetic phase transition at 85 K, which may be due to the antiferromagnetic super exchange of Fe 3+ spins.