Field-induced spin-flop-like metamagnetism in alpha-CoB4O7

doi:10.1016/j.solidstatesciences.2013.02.014

CORC > 北京大学 > 化学与分子工程学院

	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).