高温固相合成Ni_xZn_(1-x)Fe_2O_4铁氧体及物相组成分析

以Fe2O3、ZnO和NiO为原料,采用高温固相法合成NixZn1-xFe2O4(x=0～0.9)铁氧体,用差热分析、X射线衍射等测试技术对样品进行分析研究。结果表明:各产物中没有发现单一相的NiO、ZnO和Fe2O3存在,各产物均属立方晶系尖晶石结构且结晶完整。随着Ni的摩尔分数x的增加,衍射峰逐渐向高角度偏移,根据晶面间距公式计算可知,随着Ni摩尔分数x的增加,样品晶体晶胞参数逐渐减小,均是由于Zn2+、Fe3+和Ni2+3种金属离子大小与相对含量的变化引起的。

Synthesis and Phase Analysis of NixZn1-xFe2O4 by High Temperature Solid State Reaction

NixZn1-xFe2O4(x=0～0.9)ferrites were synthesized by high temperature solid state reaction with Fe2O3,ZnO and NiO as raw materials.The mixturer of the raw materials and the sample were analyzed by TG-SDTA and XRD.The results showed that all the products were single phase of spinel structure ferrites belonged to cubic crystal system and all the crystals were crystallized with good integrality.No single phase of NiO,ZrO and Fe2O3 existed in the products.X-ray diffraction peaks of samples gradually shifted to big angle and the crystal cell parameters reduced gradually with the increasing of the content of Ni.These phenomenons were brought about by the size of the metal ions and the relative contents of Zn2+,Fe3+ and Ni2+.