Coercivity Mechanism in the Anisotropic Fe‐Al‐C Permanent Magnet
Coercivity Mechanism in the Anisotropic Fe‐Al‐C Permanent Magnet
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DOI：
10.1002/pssa.2211550223
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发表时间：
1996-06
期刊：
影响因子：
--
通讯作者：
J. J. Wyłǒki-J.
中科院分区：
文献类型：
--
作者：
J. J. Wyłǒki-J.
本文根据磁矩曲线计算出的旋转磁滞能及其积分，研究了各向异性Fe-Al-C永磁体的磁化反转机理。此外，测得的角度，字段，和温度的矫顽场的依赖关系进行了分析钉扎和成核模型的理论结果的框架内。此外，调查的初始磁化和退磁数据（剩磁曲线）和比较钉扎和成核模型的理论预测的性质的磁化机制的信息。所有的实验数据与适当的理论模型比较清楚地表明，在各向异性Fe-Al-C磁体在4.2至520 K的温度范围内的磁硬化机制是钉扎型。
The mechanism of magnetization reversal processes in the anisotropic Fe-Al-C permanent magnet has been investigated on the basis of the rotational hysteresis energy and its integral calculated from the magnetic torque curves. Moreover, the measured angular, field, and temperature dependences of the coercive field are analysed within the framework of theoretical results for pinning and nucleation models. Additionally, the investigation of initial magnetization and demagnetization data (remanence curves) and comparison with theoretical predictions for pinning and nucleation models gives information on the nature of the coercivity mechanism. All experimental data compared with appropriate theoretical models clearly indicate that the magnetic hardening mechanism in the anisotropic Fe-Al-C magnet in the temperature range 4.2 to 520 K is of pinning type.