Enhancement of elastic-light scattering due to the magnetization instability in ultrathin magnetic films
Journal Article
·
· Physical Review, B: Condensed Matter
- Optical Sciences Center and Surface Science Division of Arizona Research Laboratories, University of Arizona, Tucson, Arizona 85721 (United States)
We have observed magnetic-field-dependent enhancements as large as a factor of 20 of the intensity of [ital elastic]-light scattering, from ultrathin magnetic films with perpendicular magnetic anisotropy. High-resolution Brillouin spectroscopy shows that this enhancement reaches its maximum at a critical field (H[sub crit]) where the magnetization starts to incline toward out-of-plane due to the perpendicular anisotropy. We attribute this effect to the microscopic instability due to random fluctuations of the magnetization near H[sub crit]. [copyright] [ital 1999] [ital The American Physical Society]
- OSTI ID:
- 6199006
- Journal Information:
- Physical Review, B: Condensed Matter, Vol. 60:9; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
ANISOTROPY
BRILLOUIN EFFECT
COBALT
CRITICAL FIELD
ELASTIC SCATTERING
FLUCTUATIONS
LIGHT SCATTERING
MAGNETIZATION
MAGNETO-OPTICAL EFFECTS
THIN FILMS
COHERENT SCATTERING
ELEMENTS
FILMS
MAGNETIC FIELDS
METALS
SCATTERING
TRANSITION ELEMENTS
VARIATIONS
360104* - Metals & Alloys- Physical Properties
ANISOTROPY
BRILLOUIN EFFECT
COBALT
CRITICAL FIELD
ELASTIC SCATTERING
FLUCTUATIONS
LIGHT SCATTERING
MAGNETIZATION
MAGNETO-OPTICAL EFFECTS
THIN FILMS
COHERENT SCATTERING
ELEMENTS
FILMS
MAGNETIC FIELDS
METALS
SCATTERING
TRANSITION ELEMENTS
VARIATIONS
360104* - Metals & Alloys- Physical Properties