Stress-induced surface magnetization of (La{sub 0.7}Sr{sub 0.3})MnO{sub 3} thin films
- Univ. of Maryland, College Park, MD (United States)
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}.
- OSTI ID:
- 566465
- Report Number(s):
- CONF-970468-; ISSN 0018-9464; TRN: IM9805%%144
- Journal Information:
- IEEE Transactions on Magnetics, Vol. 33, 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
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