1 Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Inner Mongolia Normal University, Hohhot 010022 2 Department of Physics, National University of Mongolia, Ulaanbaatar 14201, Mongolia 3 Institute of Physics and Technology, Mongolian Academy of Science, Ulaanbaatar 13330, Mongolia
Abstract: A series of Mg1-xCaxFe2O4 ferrites was prepared by a solid-state reaction method. The crystal structure, the morphology and chemical composition, the magnetic properties of the ferrites were investigated by using XRD, SEM and VSM, respectively. The heating performance was measured in an alternating magnetic field (25 kHz). The results show that the ferrites form the single-phase cubic spinel structure in the Ca content x between 0 and 0.3, while a tetragonal phase forms at x=0.4. The lattice constants, the coercivity and the grain sizes increase with x, while the saturation magnetization changes nonlinearly. The saturation magnetization (Ms) reaches a maximum of 16.37 A·m2·kg-1 and the heating property is maximum at x = 0.1. It turns out that appropriate amounts of Ca substitution for Mg could improve the magnetic and heating performance of the ferrites, which have potential application and promising approaches for tumor therapy.
作者简介: 春风,2006年4月毕业于日本冈山大学,获得理学硕士学位。2015年10月至今在蒙古国国立大学读博士学位,主要从事磁性材料领域的磁致发热性能研究。特古斯,博士,内蒙古师范大学物理学教授,2003年获荷兰阿姆斯特丹大学理学博士,从事磁性材料研究。Namsrai Tsogbadrakh 从英国索尔福德大学材料研究所毕业,获得博士学位。现在,于蒙古国蒙古国立大学物理学院工作,任教授。其致力于研究材料特性实验,晶体动力学和电子能带结构预测,高能先进磁性材料的磁性能和磁晶各向异性,例如Li离子电池的应用,自旋电子学和产热能力。另外,他致力于电子能带结构理论的发展,例如DFT,绿色函数法和GW-approximation, CPA and DMFT。tegusph@imnu.edu.cn
引用本文:
春风, 特古斯, Tsogbadrakh N, Sangaa D. Mg1-xCaxFe2O4化合物的结构、磁性及交变磁场中的发热性能[J]. 材料导报, 2019, 33(z1): 122-125.
Chunfeng B, Tegus O, Tsogbadrakh N, Sangaa D. Structure, Magnetism and Heating Properties in AC Magnetic Field of Mg1-xCaxFe2O4 Ferrites. Materials Reports, 2019, 33(z1): 122-125.
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2019, Vol. 33 
