MgCaxFe2−xO4(= 0.00, 0.01, 0.03, 0.05, 0.07)钙取代铁氧体镁的制备及其结构和磁性能

K. Bamzai, Gurbinder Kour, Balwinder Kaur, S. Kulkarni
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引用次数: 40

摘要

采用陶瓷法制备了成分为MgCaxFe2−xO4(分别为0.00,0.01,0.03,0.05,0.07)的钙取代铁氧体镁。然后对这些成分进行了详细的结构和磁性研究。x射线衍射研究揭示了单相立方尖晶石的形成。晶格常数随钙浓度的增加而增大,从= 0.00到= 0.03后减小。利用扫描电镜(SEM)技术对生长材料的形貌进行了研究。采用平均截距线法计算晶粒尺寸。通过能量色散x射线分析(EDAX)得到了纯铁酸镁和钙取代铁酸镁的元素组成。磁滞回线证实了所制备的组合物的磁性,然后在阳离子分布的基础上对其进行了讨论。计算了饱和磁化强度、矫顽力和固相率等参数。居里温度随钙含量的增加而降低。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Preparation, and Structural and Magnetic Properties of Ca Substituted Magnesium Ferrite with Composition MgCaxFe2−xO4 ( = 0.00, 0.01, 0.03, 0.05, 0.07)
Calcium substituted magnesium ferrite with composition MgCaxFe2−xO4 (where = 0.00, 0.01, 0.03, 0.05, 0.07) was prepared by ceramic technique. These compositions were then subjected to detailed study for structural and magnetic properties. X-ray diffraction studies reveal the formation of single phase cubic spinel. The values of lattice constant increase with the increase in calcium concentration from = 0.00 to = 0.03 and then decrease. Scanning electron microscopic (SEM) technique was used to study the morphology of the grown materials. The grain size was calculated using average intercept line method. The elemental composition of pure and calcium substituted magnesium ferrite was obtained from energy dispersive X-ray analysis (EDAX) spectrum. The hysteresis loop confirms the magnetic behaviour of the prepared composition, which is then discussed on the basis of cation distribution. The parameters such as saturation magnetization, coericivity, and retentivity are calculated. The Curie temperature was found to decrease with increasing calcium content.
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