Perpendicular magnetic anisotropy and strong magneto-optic properties of SrRuO{sub 3} epitaxial films
- Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305 (United States)
- Center for Materials Research, Stanford University, Stanford, California 94305 (United States)
- Conductus Inc., Sunnyvale, California 94086 (United States)
Epitaxial films of the ferromagnetic perovskite SrRuO{sub 3} were measured with a bulk magnetometer and with a local magneto-optic Sagnac interferometer in transmission and in reflection. We find a magnetic easy axis perpendicular to the films, and for saturated remanent magnetization along this direction the Faraday rotation and the Kerr rotation at {lambda}=840 nm are about 0.75{times}10{sup 5} deg/cm and 0.85{degree}, respectively. The temperature dependence of the remanent magnetization in the low temperature limit is dominated by spin-wave excitations, yielding a notable decrease with {ital T}{sup 3/2}. Using Sagnac--Kerr scanning and transmission electron microscopy imaging we correlate the coercivity with the grain size.
- DOE Contract Number:
- FG03-94ER45528
- OSTI ID:
- 45957
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 18 Vol. 66; ISSN 0003-6951; ISSN APPLAB
- Country of Publication:
- United States
- Language:
- English
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