Evidence of High-Spin Ru and Universal Magnetic Anisotropy in SrRuO(3) Thin Films

Abstract

We have investigated the origins of enhanced saturated magnetic moment and strong strain-dependent magnetic anisotropy in epitaxial films of the transition-metal oxide SrRuO3. We find evidence for an enhancement of the carrier concentration and the stabilization of high-spin Ru4+. Through x-ray magnetic circular dichroism measurements, we also observe a strain-dependent enhancement of the out-of-plane orbital magnetic moment. Such an enhancement is consistent with the universal out-of-plane anisotropy axis shown to occur in films in a variety of different crystallographic orientations. We explain all these effects in terms of an anisotropic reduction in the crystal field resulting from anisotropically reduced orbital overlap in distorted films.

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Document Details

Document Type
Technical Report
Publication Date
Apr 17, 2012
Accession Number
ADA578141

Entities

People

  • A. J. Grutter
  • A. Vailionis
  • E. Arenholz
  • F. J. Wong
  • Y. Suzuki

Organizations

  • University of California, Berkeley

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Advanced Materials
  • Band Structures
  • Crystal Lattices
  • Curie Temperature
  • Diffraction
  • Distortion
  • Ground State
  • Light Sources
  • Magnetic Anisotropy
  • Magnetic Fields
  • Magnetic Moments
  • Magnetic Properties
  • Magnetometers
  • Materials
  • Materials Science
  • Thin Films
  • X-Ray Diffraction

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Nanofabrication and Microfabrication.
  • Quantum Chemistry

Technology Areas

  • Space