Study of magnetoresistance of epitaxial magnetite films grown on vicinal MgO (100) substrate

R. G.S. Sofin; S. K. Arora; I. V. Shvets

doi:10.1063/1.1850361

Study of magnetoresistance of epitaxial magnetite films grown on vicinal MgO (100) substrate

R. G.S. Sofin^*, S. K. Arora, I. V. Shvets

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

The magnetoresistance (MR) studies of magnetite thin films deposited on vicinal MgO substrates show an enhanced MR along the miscut direction as compared to the direction perpendicular to it. The MR anisotropy increases with the decrease in temperature and peaks at the Verwey transition. The increase in magnetoresistance and anisotropy behavior is attributed to the formation of a greater number of out-of-plane shifted antiphase boundaries due to the step edges on vicinal MgO substrates. These local electronic and spin structure modifications at the APBs introduce additional spin scattering and are responsible for the increase in MR along the miscut.

Original language	English
Article number	10D315
Journal	Journal of Applied Physics
Volume	97
Issue number	10
DOIs	https://doi.org/10.1063/1.1850361
Publication status	Published - May 15 2005
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy

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title = "Study of magnetoresistance of epitaxial magnetite films grown on vicinal MgO (100) substrate",

abstract = "The magnetoresistance (MR) studies of magnetite thin films deposited on vicinal MgO substrates show an enhanced MR along the miscut direction as compared to the direction perpendicular to it. The MR anisotropy increases with the decrease in temperature and peaks at the Verwey transition. The increase in magnetoresistance and anisotropy behavior is attributed to the formation of a greater number of out-of-plane shifted antiphase boundaries due to the step edges on vicinal MgO substrates. These local electronic and spin structure modifications at the APBs introduce additional spin scattering and are responsible for the increase in MR along the miscut.",

author = "Sofin, {R. G.S.} and Arora, {S. K.} and Shvets, {I. V.}",

note = "Funding Information: The financial support from the Science Foundation Ireland is gratefully acknowledged (Project No. 00∕PI.1∕C042).",

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AU - Sofin, R. G.S.

AU - Arora, S. K.

AU - Shvets, I. V.

N1 - Funding Information: The financial support from the Science Foundation Ireland is gratefully acknowledged (Project No. 00∕PI.1∕C042).

PY - 2005/5/15

Y1 - 2005/5/15

N2 - The magnetoresistance (MR) studies of magnetite thin films deposited on vicinal MgO substrates show an enhanced MR along the miscut direction as compared to the direction perpendicular to it. The MR anisotropy increases with the decrease in temperature and peaks at the Verwey transition. The increase in magnetoresistance and anisotropy behavior is attributed to the formation of a greater number of out-of-plane shifted antiphase boundaries due to the step edges on vicinal MgO substrates. These local electronic and spin structure modifications at the APBs introduce additional spin scattering and are responsible for the increase in MR along the miscut.

AB - The magnetoresistance (MR) studies of magnetite thin films deposited on vicinal MgO substrates show an enhanced MR along the miscut direction as compared to the direction perpendicular to it. The MR anisotropy increases with the decrease in temperature and peaks at the Verwey transition. The increase in magnetoresistance and anisotropy behavior is attributed to the formation of a greater number of out-of-plane shifted antiphase boundaries due to the step edges on vicinal MgO substrates. These local electronic and spin structure modifications at the APBs introduce additional spin scattering and are responsible for the increase in MR along the miscut.

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Study of magnetoresistance of epitaxial magnetite films grown on vicinal MgO (100) substrate

Abstract

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