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首页> 外文期刊>Magnetics, IEEE Transactions on >Positive-Feedback Theory of Hysteretic Recoil Loops in Hard Ferromagnetic Materials
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Positive-Feedback Theory of Hysteretic Recoil Loops in Hard Ferromagnetic Materials

机译：硬铁磁材料中磁滞回弹环的正反馈理论

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This paper develops a physically-based analytical theory that can be used to model recoil loops, as well as major loops and first- and second-order return curves, in hard ferromagnetic materials that display return-point memory. Atomic-scale quantum-mechanical considerations lead to basic S-shaped magnetization curves that account for hysteretic effects in major and minor loops, as well as their reversibility and irreversibility. These loops exhibit perfect closure only in the presence of the return-point-memory effect. Field (energy) contributions from this hysteretic scenario are summed with contributions due to the classical-physics domain-scale anhysteretic scenario and to the macroscopic demagnetizing field, to obtain a summed scenario that can model isotropic and certain anisotropic materials. Analytical expressions are obtained for all reversal curves up to second order, under the return-point-memory constraint, so that closed recoil loops can be modeled. The theory is validated by comparison with measured data for five different materials.
机译：本文开发了一种基于物理的分析理论，该理论可用于对显示返回点记忆的硬铁磁材料中的反冲回路，主回路以及一阶和二阶返回曲线进行建模。原子尺度的量子力学考虑导致基本的S形磁化曲线，该曲线说明了主回路和次回路的磁滞效应，以及它们的可逆性和不可逆性。这些循环仅在存在返回点记忆效应的情况下才表现出完美的闭合。将这种磁滞情形的场（能量）贡献与经典物理学域尺度磁滞情形和宏观退磁场的贡献相加，以获得可以模拟各向同性和某些各向异性材料的总情形。在返回点内存约束下，获得了所有直至第二阶的逆转曲线的解析表达式，因此可以对闭合的后坐力回路进行建模。通过与五种不同材料的测量数据进行比较，验证了该理论。

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