Magnetoresistance of epitaxial thin films of ferromagnetic metallic oxide SrRuO{sub 3} with different domain structures
- Department of Mechanical Engineering and Materials Science, Duke University Durham, North Carolina 27708 (United States)
We have studied the magnetoresistive behavior of epitaxial thin films of the conductive ferromagnetic oxide SrRuO{sub 3} with different domain structures grown on both miscut (001) SrTiO{sub 3} and exact (001) LaAlO{sub 3} substrates. A strong anisotropic magnetoresistance (MR) has been observed in the single domain SrRuO{sub 3} thin film on miscut (001) SrTiO{sub 3} substrate. In contrast, the SrRuO{sub 3} thin film on (001) LaAlO{sub 3} substrate shows identical MR behavior in two orthogonal directions on the film due to the presence of 90{degree} domains in the plane. For both the films, large negative magnetoresistance effects ({approximately}10{percent}) were observed when the current and the applied magnetic field are parallel. This is attributed to a reduction in spin fluctuations near T{sub c} and to magnetization rotation leading to a change in the angle between the current and magnetization at low temperatures. {copyright} {ital 1997 American Institute of Physics.}
- OSTI ID:
- 542520
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 12 Vol. 71; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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