4.7 Article

Structural and magnetic influence of yttrium-for-iron substitution in cobalt ferrite

期刊

JOURNAL OF ALLOYS AND COMPOUNDS
卷 691, 期 -, 页码 130-137

出版社

ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2016.08.223

关键词

Ceramics; Oxide materials; Crystal structure and symmetry; X-ray diffraction; Raman spectroscopy; Magnetic measurements

资金

  1. Secyt-UNC
  2. UBACyT

向作者/读者索取更多资源

Yttrium-substituted cobalt ferrites of nominal composition CoYxFe1.98-xO4, x - 0; 0.1; 0.2; 0.3, were prepared using the sol-gel combustion method. A slight iron deficiency in the formulation was designed in order to improve yttrium solubility in the spinel structure. The inclusion of Y in the lattice reached 10% cationic substitution. XRD Rietveld analysis and Raman spectra confirm that yttrium enters the lattice in octahedral sites, increasing the inversion parameter of cobalt ferrite. Mossbauer results confirm the cation distribution obtained with Rietveld refinements. Saturation magnetization and Curie temperature decrease with iron substitution, confirming the B site occupancy of Y ions. Yttrium inclusion promotes a cation distribution which modifies the Raman spectra. A model is proposed to explain the observed vibrational modes. (C) 2016 Elsevier B.V. All rights reserved.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据