Magnetism and phase transformation of Cu-Fe composite oxides prepared by the sol-gel route

被引：4
作者：
Xiao, Z. H. [1 ]
Jin, S. H. [1 ]
Wang, J. H. [2 ]
Liang, C. H. [1 ]
机构：
[1] Dalian Univ Technol, Lab Adv Mat & Catalyt Engn, Dalian 116024, Peoples R China
[2] Chinese Acad Sci, Dalian Inst Chem Phys, Mossbauer Effect Data Ctr, Dalian 116023, Peoples R China
来源：
HYPERFINE INTERACTIONS | 2013年 / 217卷 / 1-3期
基金：
中国国家自然科学基金;
关键词：
Cu-Fe composite oxides; Sol-gel; Phase transformation; CuFe2O4; Mossbauer spectroscopy; COPPER FERRITES;
D O I：
10.1007/s10751-012-0662-z
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
The Cu-Fe composite oxides were prepared by an epoxide assisted sol-gel route. The structural and magnetic properties of Cu-Fe composite oxides calcinated at different temperatures were determined by X-ray diffraction (XRD), Mossbauer spectroscopy measurements, and magnetic measurements. These results indicated that CuFe2O4 was only formed as calcination temperature increased to 500 A degrees C, and a crystalline phase transformation from c-CuFe2O4 to t-CuFe2O4 occurred in elevating calcination temperature above it. All Cu-Fe oxides had ferromagnetic nature, and the significant superparamagnetic behavior was observed in the results of magnetic and Mossbauer spectroscopy measurements.
引用
收藏
页码：151 / 156
页数：6
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