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Title: Anisotropic properties of molecular beam epitaxy-grown colossal magnetoresistance manganite thin films

Abstract

We show that both the magnetoresistance and magnetism in tetragonal MBE-grown films of La{sub 1{minus}x}Ca{sub x}MnO{sub 3} show anisotropic effects that depend on both temperature and magnetic field. We show that the {open_quotes}colossal{close_quotes} magnetoresistance depends on the angle between the magnetization and the transport current and that the size of this effect is temperature-dependent. Below the Curie temperature this results in an unusual upturn in the magnetoresistance for small magnetic fields normal to the plane of the film as the magnetization rotates out of the plane. Low-field hysteresis of the in-plane magnetoresistance is also observed, and also shows an anisotropy with respect to the current and magnetization directions. We also find an in-plane biaxial magnetocrystalline anisotropy with easy axes along the {l_brace}100{r_brace} (Mn{endash}O) crystal directions, and evidence for {ital c}-axis magnetocrystalline anisotropy. {copyright} {ital 1997 American Institute of Physics.}

Authors:
; ;  [1]; ;  [2]
  1. Department of Physics, University of Wisconsin-Madison, 1150 University Avenue, Madison, Wisconsin 53706 (United States)
  2. Varian Research Center, 3075 Hansen Way, Palo Alto, California 94304 (United States)
Publication Date:
OSTI Identifier:
496539
Report Number(s):
CONF-961141-
Journal ID: JAPIAU; ISSN 0021-8979; TRN: 97:016232
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 81; Journal Issue: 8; Conference: 41. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 12-15 Nov 1996; Other Information: PBD: Apr 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; LANTHANUM OXIDES; MAGNETORESISTANCE; CALCIUM OXIDES; MANGANESE OXIDES; LANTHANUM COMPOUNDS; CALCIUM COMPOUNDS; ANTIFERROMAGNETIC MATERIALS; MAGNETIZATION; PEROVSKITES; TEMPERATURE DEPENDENCE; ANISOTROPY; THIN FILMS; MOLECULAR BEAM EPITAXY

Citation Formats

ODonnell, J, Onellion, M, Rzchowski, M S, Eckstein, J N, and Bozovic, I. Anisotropic properties of molecular beam epitaxy-grown colossal magnetoresistance manganite thin films. United States: N. p., 1997. Web. doi:10.1063/1.365012.
ODonnell, J, Onellion, M, Rzchowski, M S, Eckstein, J N, & Bozovic, I. Anisotropic properties of molecular beam epitaxy-grown colossal magnetoresistance manganite thin films. United States. https://doi.org/10.1063/1.365012
ODonnell, J, Onellion, M, Rzchowski, M S, Eckstein, J N, and Bozovic, I. 1997. "Anisotropic properties of molecular beam epitaxy-grown colossal magnetoresistance manganite thin films". United States. https://doi.org/10.1063/1.365012.
@article{osti_496539,
title = {Anisotropic properties of molecular beam epitaxy-grown colossal magnetoresistance manganite thin films},
author = {ODonnell, J and Onellion, M and Rzchowski, M S and Eckstein, J N and Bozovic, I},
abstractNote = {We show that both the magnetoresistance and magnetism in tetragonal MBE-grown films of La{sub 1{minus}x}Ca{sub x}MnO{sub 3} show anisotropic effects that depend on both temperature and magnetic field. We show that the {open_quotes}colossal{close_quotes} magnetoresistance depends on the angle between the magnetization and the transport current and that the size of this effect is temperature-dependent. Below the Curie temperature this results in an unusual upturn in the magnetoresistance for small magnetic fields normal to the plane of the film as the magnetization rotates out of the plane. Low-field hysteresis of the in-plane magnetoresistance is also observed, and also shows an anisotropy with respect to the current and magnetization directions. We also find an in-plane biaxial magnetocrystalline anisotropy with easy axes along the {l_brace}100{r_brace} (Mn{endash}O) crystal directions, and evidence for {ital c}-axis magnetocrystalline anisotropy. {copyright} {ital 1997 American Institute of Physics.}},
doi = {10.1063/1.365012},
url = {https://www.osti.gov/biblio/496539}, journal = {Journal of Applied Physics},
number = 8,
volume = 81,
place = {United States},
year = {Tue Apr 01 00:00:00 EST 1997},
month = {Tue Apr 01 00:00:00 EST 1997}
}