Influence of miscut on the anisotropic magnetoresistance of magnetite thin films

R. Ramos; S. K. Arora; I. V. Shvets

doi:10.1063/1.3074518

Influence of miscut on the anisotropic magnetoresistance of magnetite thin films

R. Ramos, S. K. Arora, I. V. Shvets

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

8 Citations (Scopus)

Abstract

We present the comparative measurements of the angular dependence of the anisotropic magnetoresistance (AMR) of magnetite (Fe3 O4) films on MgO(001) nonvicinal and vicinal substrates (2.86° miscut along the 〈 100 〉 direction). The AMR behavior for current parallel and perpendicular to the direction of step edges is quite similar to that of nonvicinal Fe3 O4 films for temperatures above the Verwey transition (TV). However, we observed a dramatic change in the symmetry of the AMR's angular response below TV for the vicinal sample, which depends on the direction of current with respect to the step edges. The results highlight the influence of step edge induced spin disorder on the transport properties below Verwey transition.

Original language	English
Article number	07B108
Journal	Journal of Applied Physics
Volume	105
Issue number	7
DOIs	https://doi.org/10.1063/1.3074518
Publication status	Published - 2009
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Influence of miscut on the anisotropic magnetoresistance of magnetite thin films",

abstract = "We present the comparative measurements of the angular dependence of the anisotropic magnetoresistance (AMR) of magnetite (Fe3 O4) films on MgO(001) nonvicinal and vicinal substrates (2.86° miscut along the 〈 100 〉 direction). The AMR behavior for current parallel and perpendicular to the direction of step edges is quite similar to that of nonvicinal Fe3 O4 films for temperatures above the Verwey transition (TV). However, we observed a dramatic change in the symmetry of the AMR's angular response below TV for the vicinal sample, which depends on the direction of current with respect to the step edges. The results highlight the influence of step edge induced spin disorder on the transport properties below Verwey transition.",

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

note = "Funding Information: The authors would like to gratefully acknowledge the financial support from the Science Foundation of Ireland (SFI) under Contract No. 06/IN.1/I91.",

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T1 - Influence of miscut on the anisotropic magnetoresistance of magnetite thin films

AU - Ramos, R.

AU - Arora, S. K.

AU - Shvets, I. V.

N1 - Funding Information: The authors would like to gratefully acknowledge the financial support from the Science Foundation of Ireland (SFI) under Contract No. 06/IN.1/I91.

PY - 2009

Y1 - 2009

N2 - We present the comparative measurements of the angular dependence of the anisotropic magnetoresistance (AMR) of magnetite (Fe3 O4) films on MgO(001) nonvicinal and vicinal substrates (2.86° miscut along the 〈 100 〉 direction). The AMR behavior for current parallel and perpendicular to the direction of step edges is quite similar to that of nonvicinal Fe3 O4 films for temperatures above the Verwey transition (TV). However, we observed a dramatic change in the symmetry of the AMR's angular response below TV for the vicinal sample, which depends on the direction of current with respect to the step edges. The results highlight the influence of step edge induced spin disorder on the transport properties below Verwey transition.

AB - We present the comparative measurements of the angular dependence of the anisotropic magnetoresistance (AMR) of magnetite (Fe3 O4) films on MgO(001) nonvicinal and vicinal substrates (2.86° miscut along the 〈 100 〉 direction). The AMR behavior for current parallel and perpendicular to the direction of step edges is quite similar to that of nonvicinal Fe3 O4 films for temperatures above the Verwey transition (TV). However, we observed a dramatic change in the symmetry of the AMR's angular response below TV for the vicinal sample, which depends on the direction of current with respect to the step edges. The results highlight the influence of step edge induced spin disorder on the transport properties below Verwey transition.

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Influence of miscut on the anisotropic magnetoresistance of magnetite thin films

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