Structural and magnetic influence of yttrium-for-iron substitution in cobalt ferrite
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- 作者：Isaac Haï ; k Dunna ; Silvia E. Jacobob ; Paula G. Bercoffa ; bercoff@famaf.unc.edu.ar" class="auth_mail" title="E-mail the corresponding author
- 关键词：Ceramics ; Oxide materials ; Crystal structure and symmetry ; X-ray diffraction ; Raman spectroscopy ; Magnetic measurements
- 刊名：Journal of Alloys and Compounds
- 出版年：2017
- 出版时间：15 January 2017
- 年：2017
- 卷：691
- 期：Complete
- 页码：130-137
- 全文大小：2025 K
文摘
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CoYxFe1.98-xO4, x = 0; 0.1; 0.2; 0.3, were prepared by sol-gel.
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A slight iron deficiency in the formulation was designed to improve Y solubility.
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Yttrium enters the lattice in octahedral sites.
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Ms and Tc decrease with iron substitution, confirming the B site occupancy of Y ions.
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Y inclusion modifies Raman spectra, and new vibrational modes appear.