Theoretical study on anisotropic magnetoresistance effect for weak ferromagnets with a crystal field of tetragonal symmetry

Satoshi Kokado, Masakiyo Tsunoda

研究成果: Conference article査読

抄録

We derive an expression of the anisotropic magnetoresistance (AMR) ratio for weak ferromagnets with a crystal field of tetragonal symmetry using the electron scattering theory. This theory is based on the twocurrent model consisting of a conduction state and localized d states with a spin-orbit interaction and the crystal field. The expression of the AMR ratio is related to the partial density of states of each orbital at the Fermi energy. On the basis of this expression, we investigate the sign of the AMR ratio. In addition, we analyze the experimental result of the negative AMR ratio at low temperature for a typical weak ferromagnet, bcc Fe.

本文言語English
ページ(範囲)1864-1868
ページ数5
ジャーナルMaterials Today: Proceedings
33
DOI
出版ステータスPublished - 2020
イベント10th International Conference on Key Engineering Materials, ICKEM 2020 - Madrid, Spain
継続期間: 2020 3 262020 3 29

ASJC Scopus subject areas

  • 材料科学(全般)

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