Neutron Scattering Measurements in Chromium near the Neel Temperature
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概要
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Magnetic excitations in chromium near the Neel temperature were investigated using a neutron time-of-flight spectrometer. Above T_N, the excitation was analyzed following the paramagnon model. The Fermi velocity υ_F is estimated to be υ_F=2.7(±-1.3)×10^7 cm/sec at 1.105 T_N in good agreement with the theoretical value. The integrated intensity of scattered neutrons displayed a maximum at 313 K and rapidly decreased as the temperature became lowered. The renormalization of spin wave velocity and the longitudinal spin fluctuation model are proposed as possible explanations.
- 社団法人日本物理学会の論文
- 1972-02-05
著者
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Hamaguchi Yoshikazu
Japan Atomic Energy Research Institute
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Kunitomi Nobuhiko
Faculty Of Science Osaka University
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Tsunoda Yorihiko
Faculty Of Science Osaka University
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