Brillouin Scattering in Itinerant Ferromagnet MnP
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概要
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Thermal magnons within the optical skin layer of ferromagnetic MnP single crystal(7'. - 290 K) have been studied by Brillouin light scattering in a temperature range be-tween 80 K and 310 K under zero magnetic field. For temperatures below - T./ 2, themagnon energy gaps obtained from Brillouin scattering show good agreement withthe bulk magnon gaps obtained from neutron scattering and torque method. Wellbelow the Curie temperature, Brillouin scattering has been established as a convenienttechnique to determine the energy gaps in itinerant ferromagnets. The spins near thesurface seem to undergo a surface magnetic phase transition at much lower temperalures than the bulk T.. A complete set of the elastic constants at room temperaturehas been determined.[magnon, surface phonon, Brillouin scattering, MnP, ferromagntism, phase Iran- ]l sitionlll
- 社団法人日本物理学会の論文
- 1991-07-15
著者
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Fujimura Tadao
Research Institute For Scientific Measurements And Department Of Physics Tohoku University
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YOSHIHARA Akira
Research Institute for Scientific Measurements, Tohoku University
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Otake Toru
Showa Denko K.k.
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Ohi Tetsuo
Botanical Gardens Graduate School Of Sciences The University Of Tokyo
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Fujimura Tadao
Research Institute For Scientific Measurements
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Yoshihara Akira
Research Institute For Science Measurements Tohoku University
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