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Magnetic Anisotropy

  • Hanmin Jin
  • Terunobu Miyazaki
Chapter
Part of the Springer Series in Materials Science book series (SSMATERIALS, volume 158)

Abstract

A crystal with a certain crystal structure is anisotropic. Therefore, the free energy of a magnetic crystal depends on the direction of the spontaneous magnetization vector \(\vec {M}_\mathrm{ s}\) with respect to the lattice axes. The anisotropy is called magnetocrystalline anisotropy. The magnetostatic energy of a non-spherical magnetic body also depends on the \(\vec {M}_\mathrm{ s} \) direction. The anisotropy is called Shape anisotropy. Additional magnetic anisotropy may be induced through some treatment in some magnetic media. Such anisotropy is called induced magnetic anisotropy. Magnetic atoms in amorphous alloys have magnetic anisotropies with randomly distibuted easy‐axis directions. Such anisotropy is called random anisotropy. This chapter introduces typical phenomena and basic theories of the anisotropies.

Keywords

Magnetic Anisotropy Orbital Angular Momentum Anisotropy Energy Magnetocrystalline Anisotropy Film Plane 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Department of PhysicsJilin UniversityChangchunPeople’s Republic of China
  2. 2.Advanced Inst. Materials ResearchTohoku UniversitySendaiJapan

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