Numerical Simulation of Quasistatic and Dynamic Remagnetization Processes with Special Applications to Thin Films and Nanoparticles
Numerical Simulation of Quasistatic and Dynamic Remagnetization Processes with Special Applications to Thin Films and Nanoparticles
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准静态和动态重磁化过程的数值模拟，特别适用于薄膜和纳米颗粒
DOI：
10.1007/1-4020-7984-2_19
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
N. Gorn
中科院分区：
文献类型：
--
作者：
D. Berkov;N. Gorn
W.F.Brown(Brown，1963)创立的理论微磁学基本上是一种非常简单的现象学，它允许我们在已知任何铁磁性物体的几何、材料参数和磁化构型的情况下，计算该物体的总磁自由能。在其“最小”版本中，微磁学考虑了四个能量贡献--外场中的能量(塞曼能量)Eext、磁晶各向异性引起的能量Ean、交换刚度能量Ex和铁磁的磁矩的磁偶极相互作用能量，称为杂散(或退磁)场能量Edem：包括其他能量项--如表面各向异性或磁弹性能--是可能的(并且在许多情况下甚至是必要的)，但我们不在这里讨论它们。
Theoretical micromagnetics as founded by W. F. Brown (Brown, 1963) is a basically quite simple phenomenology which allows us to evaluate the total magnetic free energyEtotof any ferromagnetic body if geometry, material parameters and the magnetization configuration of this body are known. In its “minimal” version, micromagnetics takes into account four energy contributions—energy in the external field (Zeeman, energy)Eext, energy due to the magnetocrystalline anisotropyEan, the exchange stiffness energyEexchand the magnetodipolar interaction energy of the magnetic moments of the ferromagnet, known as the stray (or demagnetizing) field energyEdem:The inclusion of other energy terms—like surface anisotropy or magnetoelastic energy—is possible (and in many cases even necessary), but we are not going to consider them here.