STUDY ON THE COERCIVITY OF RF SPUTTERED IRON OXIDE THIN FILMS | Zendy

Yu Mei | Zendy; YOU GUANG-JIAN | Zendy; Zeng-Jun Zhou | Zendy; LUO HUI-LIN | Zendy

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STUDY ON THE COERCIVITY OF RF SPUTTERED IRON OXIDE THIN FILMS

Author(s) -

Yu Mei,

YOU GUANG-JIAN,

Zeng-Jun Zhou,

LUO HUI-LIN

Publication year - 1987

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.36.562

Subject(s) - coercivity , magnetocrystalline anisotropy , materials science , anisotropy , condensed matter physics , magnetic anisotropy , oxide , thin film , nuclear magnetic resonance , iron oxide , metallurgy , magnetization , nanotechnology , magnetic field , optics , physics , quantum mechanics

The study on magnetic properties of RF sputtered iron oxide thin films was carried out systematically. More specifically, the temperature dependence (77-500 K) of the coercivity and the variation of coercivity with different iron oxide phases such as the as-sputtered Fe3O4, partially transformed Fe3O4/(γ-Fe2O3), and γ-Fe2O3, were investigated. Comparing the theoretical analyses with the experimental results, the contributions to the coercivity from shape anisotropy, magnetocrystalline anisotropy, and stress-induced magnetic anisotropy were obtained separately. And the first-order crystalline anisotropy constant K1 vs. temperature for Fe3O4 and γ-Fe2O3 films was derived from Ms(T) and Hc(T) over the temperature range of 100-500 K.

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