Enhancement of elastic-light scattering due to the magnetization instability in ultrathin magnetic films

Journal Article · Wed Sep 01 00:00:00 EDT 1999 · Physical Review, B: Condensed Matter

DOI:https://doi.org/10.1103/PhysRevB.60.6281· OSTI ID:6199006

Murayama, A; Hyomi, K; Falco, C M ^[1]

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1. 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

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