Stress-Induced Surface Magnetization of (La0.7Sr0.3)MnO3 Thin Films

C. Kwon; S. E. Lofland; S. M. Bhagat; M. Rajeswari; T. Venkatesan; R. Ramesh; A. R. Kratz; R. D. Gomez

doi:10.1109/20.619630

Stress-Induced Surface Magnetization of (La_0.7Sr_0.3)MnO₃ Thin Films

C. Kwon, S. E. Lofland, S. M. Bhagat, M. Rajeswari, T. Venkatesan, R. Ramesh, A. R. Kratz, R. D. Gomez

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

15 Scopus citations

Abstract

The role of stress on magnetic properties of epitaxial (La_0.7Sr_0.3)MnO₃ (LSMO) films has been studied. We have investigated 1100 A thick LSMO films deposited on LaAlO₃ (Sample L, under a compressive stress) and SrTiO₃ (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. Our systematic examination of various thickness LSMO films on LaAlO₃ reveals that the maze pattern i s exhibited only between 500 Aand 1700 A thick films. Despite of larger anisotropy, no maze pattern is observed in films thinner than 360 A.

Original language	English (US)
Pages (from-to)	3964-3966
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	33
Issue number	5 PART 2
DOIs	https://doi.org/10.1109/20.619630
State	Published - 1997
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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title = "Stress-Induced Surface Magnetization of (La0.7Sr0.3)MnO3 Thin Films",

abstract = "The role of stress on magnetic properties of epitaxial (La0.7Sr0.3)MnO3 (LSMO) films has been studied. We have investigated 1100 A thick LSMO films deposited on LaAlO3 (Sample L, under a compressive stress) and SrTiO3 (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. Our systematic examination of various thickness LSMO films on LaAlO3 reveals that the maze pattern i s exhibited only between 500 Aand 1700 A thick films. Despite of larger anisotropy, no maze pattern is observed in films thinner than 360 A.",

author = "C. Kwon and Lofland, {S. E.} and Bhagat, {S. M.} and M. Rajeswari and T. Venkatesan and R. Ramesh and Kratz, {A. R.} and Gomez, {R. D.}",

note = "Funding Information: We would like to thank the Office of Naval Research for partial support under Grant No. ONR-NOOO149510.547 and the NSF under NSF-MRSEC Grant No. DRC96-32521.",

year = "1997",

doi = "10.1109/20.619630",

language = "English (US)",

volume = "33",

pages = "3964--3966",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "5 PART 2",

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TY - JOUR

T1 - Stress-Induced Surface Magnetization of (La0.7Sr0.3)MnO3 Thin Films

AU - Kwon, C.

AU - Lofland, S. E.

AU - Bhagat, S. M.

AU - Rajeswari, M.

AU - Venkatesan, T.

AU - Ramesh, R.

AU - Kratz, A. R.

AU - Gomez, R. D.

N1 - Funding Information: We would like to thank the Office of Naval Research for partial support under Grant No. ONR-NOOO149510.547 and the NSF under NSF-MRSEC Grant No. DRC96-32521.

PY - 1997

Y1 - 1997

N2 - The role of stress on magnetic properties of epitaxial (La0.7Sr0.3)MnO3 (LSMO) films has been studied. We have investigated 1100 A thick LSMO films deposited on LaAlO3 (Sample L, under a compressive stress) and SrTiO3 (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. Our systematic examination of various thickness LSMO films on LaAlO3 reveals that the maze pattern i s exhibited only between 500 Aand 1700 A thick films. Despite of larger anisotropy, no maze pattern is observed in films thinner than 360 A.

AB - The role of stress on magnetic properties of epitaxial (La0.7Sr0.3)MnO3 (LSMO) films has been studied. We have investigated 1100 A thick LSMO films deposited on LaAlO3 (Sample L, under a compressive stress) and SrTiO3 (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. Our systematic examination of various thickness LSMO films on LaAlO3 reveals that the maze pattern i s exhibited only between 500 Aand 1700 A thick films. Despite of larger anisotropy, no maze pattern is observed in films thinner than 360 A.

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

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Stress-Induced Surface Magnetization of (La_0.7Sr_0.3)MnO₃ Thin Films

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