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Microstructure, Hysteresis And Microwave Absorption Analysis Of Ba_(1-x)sr_xfe_(12)o_(19) Ferrite

机译:Ba_(1-x)sr_xfe_(12)o_(19)铁氧体的组织,磁滞和微波吸收分析

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摘要

M-type hexagonal ferrite series, Ba_(1-x)Sr_xFe_(12)O_(19) (x = 0.0, 0.2, 0.4, 0.6, 0.8, 1.0), has been synthesized by conventional ceramic method. Hysteresis parameters have been investigated at an applied field of 10 kOe and absorption has been studied at X-band as a function of thickness, substitution and frequency. Microstructure and X-ray diffraction confirmed hexagonal structure of ferrite. The substitution causes profound increase in absorption, coercivity and magnetization. The magnetic parameters have been characterized by taking into account microstructure and preferential site occupancy. Curie temperature decreases with substitution due to the formation of spin canting structure.
机译:已经通过常规陶瓷方法合成了M型六方铁氧体系列Ba_(1-x)Sr_xFe_(12)O_(19)(x = 0.0、0.2、0.4、0.6、0.8、1.0)。已在10 kOe的应用场上研究了磁滞参数,并研究了X波段的吸收率随厚度,取代度和频率的变化。显微组织和X射线衍射证实了铁氧体的六方结构。取代引起吸收,矫顽力和磁化的极大增加。通过考虑微观结构和优先的位置占用来表征磁参数。由于形成自旋倾斜结构,居里温度随着取代而降低。

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