Heat-induced magnetic properties changes of Mn3[Fe(CN)6]2•xH2O

被引：7
作者：
Liu, Min [1 ]
Xu, Mingxiang [1 ]
机构：
[1] Southeast Univ, Dept Phys, Nanjing 210096, Jiangsu, Peoples R China
来源：
PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 9, NO 1 | 2012年 / 9卷 / 01期
关键词：
annealing temperature; infrared spectroscopy; magnetic properties; PHASE-TRANSITION; PRUSSIAN BLUE; CYANIDE; HEXACYANOMETALLATES(II); SPECTROSCOPY;
D O I：
10.1002/pssc.201084184
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Polycrystalline sample of Mn-3[Fe(CN)(6)](2)center dot xH(2)O was prepared by coprecipitation method. The coprecipitated powder was annealed in vacuum at different temperatures of 80, 100, 130, and 150 degrees C respectively. Changes of magnetic properties with different annealed temperatures were studied by Fourier-transform infrared, X-ray diffraction and magnetization measurements. The positive. value of the Curie-Weiss temperature indicates the existence of a predominant ferromagnetic interaction over the anti-ferromagnetic one in the compounds annealed at 80, 100, and 150 degrees C. The negative value of. in Mn-3[Fe(CN)(6)](2)center dot xH(2)O annealed at 130 degrees C appears to be the coexistence of a strong anti-ferromagnetic and a ferromagnetic interactions in the material. This is due to the existence of a relatively strong anti-ferromagnetic contribution between the neighbouring Mn atoms bridged by the oxygen atom of the water molecule. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：89 / 92
页数：4
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