Influence of miscut direction on magnetic anisotropy of magnetite films grown on vicinal MgO (100)

V. O. Golub, V. V. Dzyublyuk, A. I. Tovstolytkin, S. K. Arora, R. Ramos, R. G.S. Sofin, I. V. Shvets

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Abstract

Ferromagnetic resonance (FMR) was used to study the influence of miscut direction on the in-plane fourfold and uniaxial magnetic anisotropies of epitaxial [formula omitted] films grown on vicinal MgO (100) surfaces. In-plane angular dependent measurements at room temperature on [formula omitted] films on two different miscut directions (miscut along [formula omitted] and [formula omitted] directions) of MgO showed the presence of both in-plane fourfold (cubic) and in-plane uniaxial anisotropies. Temperature dependent FMR investigations show that the in-plane fourfold anisotropy constant [formula omitted] is approximately the same for both samples at room temperature. The magnitude of [formula omitted] increases gradually with decreasing temperature and changes sign from negative to positive values at 130 K. This behavior is consistent with that of bulk magnetite. In addition to [formula omitted], we find an additional uniaxial component [formula omitted], whose strength is quite different for the different miscut directions. The magnitude of [formula omitted] shows very little or no temperature dependence. The observed differences in the magnitude of [formula omitted] with miscut directions are related to the changes in the antiphase boundary structure and altered magnetic configurations at the boundaries.

Original languageEnglish
Pages (from-to)14303
Number of pages1
JournalJournal of Applied Physics
Volume107
Issue number9
DOIs
Publication statusPublished - May 1 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Golub, V. O., Dzyublyuk, V. V., Tovstolytkin, A. I., Arora, S. K., Ramos, R., Sofin, R. G. S., & Shvets, I. V. (2010). Influence of miscut direction on magnetic anisotropy of magnetite films grown on vicinal MgO (100). Journal of Applied Physics, 107(9), 14303. https://doi.org/10.1063/1.3355890