skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Stress-induced surface magnetization of (La{sub 0.7}Sr{sub 0.3})MnO{sub 3} thin films

Abstract

The role of stress on magnetic properties of epitaxial (La{sub 0.7}Sr{sub 0.3}) MnO{sub 3} (LSMO) films has been studied. The authors have investigated 1,100 {angstrom} thick LSMO films deposited on LaAlO{sub 3} (Sample L, under a compressive stress) and SrTiO{sub 3} (Sample S, under a tensile stress) using the magnetic force microscopy (MFM), DC hysteresis loop, ferromagnetic resonance (FMR) measurements. The magnetic force microscope image of Sample L shows a maze-like pattern indicating a sizable out-of-plane magnetization, while the magnetic image of Sample S shows a feather-like pattern indicative of an in-plane magnetization. The hysteresis loop and ferromagnetic resonance measurements give quantitative evidence for the role of the lattice mismatch between the film and the substrate in the magnetic anisotropy of the two films. The systematic examination of various thickness LSMO films on LaAlO{sub 3} reveals that the maze pattern is exhibited only between 500 {angstrom} and 1,700 {angstrom} thick films. Despite of larger anisotropy, no maze pattern is observed in films thinner than 360 {angstrom}.

Authors:
; ; ; ; ; ; ;  [1]
  1. Univ. of Maryland, College Park, MD (United States)
Publication Date:
OSTI Identifier:
566465
Report Number(s):
CONF-970468-
Journal ID: IEMGAQ; ISSN 0018-9464; TRN: IM9805%%144
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Magnetics
Additional Journal Information:
Journal Volume: 33; Journal Issue: 5Pt2; Conference: 1997 IEEE international magnetics conference (Intermag `97), New Orleans, LA (United States), 1-4 Apr 1997; Other Information: PBD: Sep 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; MANGANATES; STRONTIUM COMPOUNDS; LANTHANUM COMPOUNDS; MAGNETIC PROPERTIES; SUBSTRATES; STRONTIUM TITANATES; ALUMINATES; STRESSES

Citation Formats

Kwon, C, Lofland, S E, Bhagat, S M, Rajeswari, M, Venkatesan, T, Ramesh, R, Kratz, A R, and Gomez, R D. Stress-induced surface magnetization of (La{sub 0.7}Sr{sub 0.3})MnO{sub 3} thin films. United States: N. p., 1997. Web. doi:10.1109/20.619630.
Kwon, C, Lofland, S E, Bhagat, S M, Rajeswari, M, Venkatesan, T, Ramesh, R, Kratz, A R, & Gomez, R D. Stress-induced surface magnetization of (La{sub 0.7}Sr{sub 0.3})MnO{sub 3} thin films. United States. https://doi.org/10.1109/20.619630
Kwon, C, Lofland, S E, Bhagat, S M, Rajeswari, M, Venkatesan, T, Ramesh, R, Kratz, A R, and Gomez, R D. Mon . "Stress-induced surface magnetization of (La{sub 0.7}Sr{sub 0.3})MnO{sub 3} thin films". United States. https://doi.org/10.1109/20.619630.
@article{osti_566465,
title = {Stress-induced surface magnetization of (La{sub 0.7}Sr{sub 0.3})MnO{sub 3} thin films},
author = {Kwon, C and Lofland, S E and Bhagat, S M and Rajeswari, M and Venkatesan, T and Ramesh, R and Kratz, A R and Gomez, R D},
abstractNote = {The role of stress on magnetic properties of epitaxial (La{sub 0.7}Sr{sub 0.3}) MnO{sub 3} (LSMO) films has been studied. The authors have investigated 1,100 {angstrom} thick LSMO films deposited on LaAlO{sub 3} (Sample L, under a compressive stress) and SrTiO{sub 3} (Sample S, under a tensile stress) using the magnetic force microscopy (MFM), DC hysteresis loop, ferromagnetic resonance (FMR) measurements. The magnetic force microscope image of Sample L shows a maze-like pattern indicating a sizable out-of-plane magnetization, while the magnetic image of Sample S shows a feather-like pattern indicative of an in-plane magnetization. The hysteresis loop and ferromagnetic resonance measurements give quantitative evidence for the role of the lattice mismatch between the film and the substrate in the magnetic anisotropy of the two films. The systematic examination of various thickness LSMO films on LaAlO{sub 3} reveals that the maze pattern is exhibited only between 500 {angstrom} and 1,700 {angstrom} thick films. Despite of larger anisotropy, no maze pattern is observed in films thinner than 360 {angstrom}.},
doi = {10.1109/20.619630},
url = {https://www.osti.gov/biblio/566465}, journal = {IEEE Transactions on Magnetics},
number = 5Pt2,
volume = 33,
place = {United States},
year = {1997},
month = {9}
}