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Title: Magnetic domain structures of La{sub 0.67}Sr{sub 0.33}MnO{sub 3} thin films with different morphologies

Abstract

Using a wide-field Kerr microscope, we have studied the magnetic domain structures of epitaxial and polycrystalline La{sub 0.67}Sr{sub 0.33}MnO{sub 3} thin films as well as a film having thermally induced {l_angle}110{r_angle} microcracks. The epitaxial film on a (001) SrTiO{sub 3} substrate has different magnetic domain behaviors for in-plane fields applied along the {l_angle}100{r_angle} and {l_angle}110{r_angle} directions. Magnetic domain orientation and contrast suggest a biaxial magnetic anisotropy with {l_angle}110{r_angle} easy axes. Defects such as microcracks and grain boundaries have a strong perturbing effect on the local magnetization and can lead to an enhanced and controllable spin-dependent scattering. {copyright} {ital 1997 American Institute of Physics.}

Authors:
;  [1];  [2];  [3]; ;  [2]
  1. IBM T. J. Watson Research Center, Yorktown Heights, New York 10596 (United States)
  2. Department of Physics, Brown University, Providence, Rhode Island 02912 (United States)
  3. IBM T. J. Watson Research Center, Yorktown, Heights, New York 10596 (United States)
Publication Date:
OSTI Identifier:
542564
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 82; Journal Issue: 8; Other Information: PBD: Oct 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; LANTHANUM OXIDES; DOMAIN STRUCTURE; STRONTIUM OXIDES; MANGANESE OXIDES; LANTHANUM COMPOUNDS; STRONTIUM COMPOUNDS; THIN FILMS; CRACKS; GRAIN BOUNDARIES; CRYSTAL DEFECTS; MAGNETIC PROPERTIES

Citation Formats

Lecoeur, P., Trouilloud, P.L., Xiao, G., Gupta, A., Gong, G.Q., and Li, X.W. Magnetic domain structures of La{sub 0.67}Sr{sub 0.33}MnO{sub 3} thin films with different morphologies. United States: N. p., 1997. Web. doi:10.1063/1.365700.
Lecoeur, P., Trouilloud, P.L., Xiao, G., Gupta, A., Gong, G.Q., & Li, X.W. Magnetic domain structures of La{sub 0.67}Sr{sub 0.33}MnO{sub 3} thin films with different morphologies. United States. doi:10.1063/1.365700.
Lecoeur, P., Trouilloud, P.L., Xiao, G., Gupta, A., Gong, G.Q., and Li, X.W. Wed . "Magnetic domain structures of La{sub 0.67}Sr{sub 0.33}MnO{sub 3} thin films with different morphologies". United States. doi:10.1063/1.365700.
@article{osti_542564,
title = {Magnetic domain structures of La{sub 0.67}Sr{sub 0.33}MnO{sub 3} thin films with different morphologies},
author = {Lecoeur, P. and Trouilloud, P.L. and Xiao, G. and Gupta, A. and Gong, G.Q. and Li, X.W.},
abstractNote = {Using a wide-field Kerr microscope, we have studied the magnetic domain structures of epitaxial and polycrystalline La{sub 0.67}Sr{sub 0.33}MnO{sub 3} thin films as well as a film having thermally induced {l_angle}110{r_angle} microcracks. The epitaxial film on a (001) SrTiO{sub 3} substrate has different magnetic domain behaviors for in-plane fields applied along the {l_angle}100{r_angle} and {l_angle}110{r_angle} directions. Magnetic domain orientation and contrast suggest a biaxial magnetic anisotropy with {l_angle}110{r_angle} easy axes. Defects such as microcracks and grain boundaries have a strong perturbing effect on the local magnetization and can lead to an enhanced and controllable spin-dependent scattering. {copyright} {ital 1997 American Institute of Physics.}},
doi = {10.1063/1.365700},
journal = {Journal of Applied Physics},
number = 8,
volume = 82,
place = {United States},
year = {1997},
month = {10}
}