skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Abstract

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.

Authors:
; ; ;  [1];  [2]; ;  [3]
  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)
Publication Date:
OSTI Identifier:
45957
DOE Contract Number:  
FG03-94ER45528
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 66; Journal Issue: 18; Other Information: PBD: 1 May 1995
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; STRONTIUM OXIDES; FERROMAGNETISM; RUTHENIUM OXIDES; THIN FILMS; EPITAXY; ANISOTROPY; MAGNETO-OPTICAL EFFECTS; PEROVSKITES; MAGNETIZATION; KERR EFFECT; COERCIVE FORCE; GRAIN SIZE

Citation Formats

Klein, L, Dodge, J S, Geballe, T H, Kapitulnik, A, Marshall, A F, Antognazza, L, and Char, K. Perpendicular magnetic anisotropy and strong magneto-optic properties of SrRuO{sub 3} epitaxial films. United States: N. p., 1995. Web. doi:10.1063/1.113962.
Klein, L, Dodge, J S, Geballe, T H, Kapitulnik, A, Marshall, A F, Antognazza, L, & Char, K. Perpendicular magnetic anisotropy and strong magneto-optic properties of SrRuO{sub 3} epitaxial films. United States. https://doi.org/10.1063/1.113962
Klein, L, Dodge, J S, Geballe, T H, Kapitulnik, A, Marshall, A F, Antognazza, L, and Char, K. Mon . "Perpendicular magnetic anisotropy and strong magneto-optic properties of SrRuO{sub 3} epitaxial films". United States. https://doi.org/10.1063/1.113962.
@article{osti_45957,
title = {Perpendicular magnetic anisotropy and strong magneto-optic properties of SrRuO{sub 3} epitaxial films},
author = {Klein, L and Dodge, J S and Geballe, T H and Kapitulnik, A and Marshall, A F and Antognazza, L and Char, K},
abstractNote = {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.},
doi = {10.1063/1.113962},
url = {https://www.osti.gov/biblio/45957}, journal = {Applied Physics Letters},
number = 18,
volume = 66,
place = {United States},
year = {1995},
month = {5}
}