Field-induced spin-flop-like metamagnetism in alpha-CoB4O7 | |
Yang, Tao ; Wang, Ying ; Yang, Dingfeng ; Li, Guobao ; Lin, Jianhua | |
刊名 | solid state sciences |
2013 | |
关键词 | Cobalt Borates Metamagnetism Spin-flop transition CO CHAINS SYSTEM COO-B2O3 NI |
DOI | 10.1016/j.solidstatesciences.2013.02.014 |
英文摘要 | We successfully obtained pure alpha-CoB4O7 powder sample by a two-step synthesis method. First, a new cobalt polyborate with unknown crystal structure was synthesized by boric acid flux method in a sealed system. Subsequently, alpha-CoB4O7 powder was obtained by the thermal decomposition of this new phase at 800 degrees C. The purity was carefully checked by Le Bail fitting of its powder XRD with good convergence. The magnetic susceptibilities in paramagnetic region agree well with Curie-Weiss law with theta = -17.7 K, C = 3.13 cm(3) K mol(-1). Ac magnetic measurements confirm its long-range AFM ordering at similar to 5 K. The field-dependent magnetization curve at 1.85 K indicates a spin-flop-like phase transition, with H-c = 35 kOe. Considering the relatively weak magnetic super-exchange, we believe this transition is due to the large magnetic anisotropy of Co2+. (C) 2013 Elsevier Masson SAS. All rights reserved.; Chemistry, Inorganic & Nuclear; Chemistry, Physical; Physics, Condensed Matter; SCI(E); EI; 0; ARTICLE; 32-35; 19 |
语种 | 英语 |
内容类型 | 期刊论文 |
源URL | [http://ir.pku.edu.cn/handle/20.500.11897/150768] |
专题 | 化学与分子工程学院 |
推荐引用方式 GB/T 7714 | Yang, Tao,Wang, Ying,Yang, Dingfeng,et al. Field-induced spin-flop-like metamagnetism in alpha-CoB4O7[J]. solid state sciences,2013. |
APA | Yang, Tao,Wang, Ying,Yang, Dingfeng,Li, Guobao,&Lin, Jianhua.(2013).Field-induced spin-flop-like metamagnetism in alpha-CoB4O7.solid state sciences. |
MLA | Yang, Tao,et al."Field-induced spin-flop-like metamagnetism in alpha-CoB4O7".solid state sciences (2013). |
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