Perpendicular magnetic anisotropy and strong magneto-optic properties of SrRuO{sub 3} epitaxial films

Journal Article · Mon May 01 00:00:00 EDT 1995 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.113962· OSTI ID:45957

Klein, L; Dodge, J S; Geballe, T H; Kapitulnik, A ^[1]; Marshall, A F ^[2]; Antognazza, L; Char, K ^[3]

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1. Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305 (United States)
2. Center for Materials Research, Stanford University, Stanford, California 94305 (United States)
3. 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, Vol. 66, Issue 18; Other Information: PBD: 1 May 1995
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
STRONTIUM OXIDES
FERROMAGNETISM
RUTHENIUM OXIDES
THIN FILMS
EPITAXY
ANISOTROPY
MAGNETO-OPTICAL EFFECTS
PEROVSKITES
MAGNETIZATION
KERR EFFECT
COERCIVE FORCE
GRAIN SIZE