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Disorder magnetic behavior of Zn-substituted Cu1-xZnxFe2O4 spinel ferrites
Solid State Communications ( IF 2.1 ) Pub Date : 2021-01-02 , DOI: 10.1016/j.ssc.2020.114181
Shahida Akhter , M.A. Hakim , S.M. Hoque , H.N. Das

A series of Zn-substituted Cu1-xZnxFe2O4 (where x = 0.0–1.0 with step of 0.1) ferrites were synthesized by double sintering solid state reaction method to explore disorder magnetic behavior. The room temperature (300 K) and low temperature (5 K) magnetic behavior has been analyzed using M-H curve, B–H loop, μi-T curve and M-T curve. The saturation magnetization for sample x = 0.0 to 0.6 and non-saturation magnetization for sample x = 0.7 to 1.0 designate the existence of long-range and short-range ferromagnetic order respectively. The Curie temperature has been derived from the sharp fall of permeability for sample x = 0.0–0.6 which is declining with raising Zn content due to redistribution of cations and weakening of A-B exchange interaction. The shrinking of coercivity affirms softer nature which can be used as high frequency soft magnetic materials. For M-T curve, when temperature is lowered from 300 K to 5 K, different disorder magnetic transition such as paramagnetic-ferromagnetic-reentrant spin glass-spin glass has been remarked for sample x > 0.6. All these feature of magnetic behavior of Cu–Zn ferrites has been studied in details in this paper.



中文翻译:

Zn取代的Cu 1-x Zn x Fe 2 O 4尖晶石铁氧体的无序磁行为

通过双重烧结固相反应法合成了一系列Zn取代的Cu 1-x Zn x Fe 2 O 4(x = 0.0–1.0,步长为0.1),以探索无序磁行为。使用MH曲线,B–H回路,μi分析了室温(300 K)和低温(5 K)的磁性能-T曲线和MT曲线。样品x = 0.0至0.6的饱和磁化强度和样品x = 0.7至1.0的非饱和磁化强度分别表示存在长程和短程铁磁序。居里温度是由于样品x = 0.0-0.6的磁导率急剧下降而得出的,由于阳离子的重新分布和AB交换相互作用的减弱,其随Zn含量的增加而下降。矫顽力的降低确认了可以用作高频软磁材料的较软的性质。对于MT曲线,当温度从300 K降低到5 K时,对于x> 0.6的样品,已标出了不同的无序磁跃迁,例如顺磁性-铁磁性-凹入自旋玻璃-自旋玻璃。

更新日期:2021-01-08
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