Structure and Infrared Radiation Property of Co_(1-x)ZnxFe_2O_4 Ferrites by XAFS Analysis

作     者：张英 ZHANG Ying,WEN Dijiang,ZHOU Jian,GAN Jiuhui (Inorganic Materials Department,College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China)

作者机构：Inorganic Materials DepartmentCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2009年第24卷第6期

页      面：907-911页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：Funded by the Key Project in Science and Technology Innovation Cultivation Program of Soochow University(Q3109808) 

主　　题：ferrites XAFS crystal structure infrared radiation property 

摘      要：Co1-xZnxFe2O4 ferrites were prepared by solid state reaction. The microstructure and performance were studied by X-ray diffraction, X-ray absorption fine-structure analysis and IRE-2 infrared radiant test. It is found that infrared radiance show a nonlinear change with x, exhibiting the infrared radiance of this material improved and the average radiance in the 8-14 μm waveband reached 0.91. The Co^3＋ and Zn^2＋ ions are found to occupy both tetrahedral and octahedral sites, and correspondingly, the fraction of Fe^3＋ ions in B-site decreases nonlinearly in ferrites. The lattice parameters are found to concern with Zn^2＋, and the activation energy deduces from crystal strain and crystal vibrate increases with content Zn^2＋. The redistribution of the Co^3＋ and Zn^2＋ ions between tetrahedral and octahedral sites is related to the providing a selective tetrahedral and octahedral sites infrared radiance of Co1-xZnxFe2O4 ceramics with increasing x.