Magneto-optical Kerr spectra and magnetic properties of Co-substituted M-type strontium ferrites

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• 作者：Xian-song Liu^a ; ^{xiansongliu@ahu.edu.cn} ; Lucia Fernandez-Garcia^b ; Feng Hu^a ; De-ru Zhu^a ; Marta Suá ; rez^b ; Jose Luis Mené ; ndez^b
• 关键词：Magnetic materials ; Sintering ; Magnetometer ; Magnetic properties
• 刊名：Materials Chemistry and Physics
• 出版年：2012
• 期刊代码：58_02540584
• 类别：ms
• 出版时间：16 April, 2012
• 卷：133
• 期：2-3
• 页码：961-964
• 文件大小：447 K

摘要

M-type strontium ferrites SrFe_12鈭?em>xCo_xO₁₉ (x = 0, 0.05, 0.10, 0.15, 0.20) were prepared by the conventional ceramic technology. The structure, magnetic properties and magneto-optical Kerr activity of the samples were investigated by X-ray diffraction (XRD), vibrating sample magnetometer (VSM) and magneto-optical ellipsometry, respectively. X-ray diffraction showed that all the samples were single phase ferrites. The magnetic properties, especially the coercive field, were remarkably modified due to the substitution of cobalt. Most importantly, a noticeable Kerr activity was demonstrated in the Co-substituted M-type strontium ferrites with x = 0.20.