Zero Sound Anomaly in a Ferromagnetic Invar Alloy Fe65Ni35
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- Endoh Yasuo
- Department of Physics, Tohoku University
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- Noda Yasuhisa
- Sendai College of Radio Technology
書誌事項
- タイトル別名
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- Zero Sound Anomaly in a Ferromagnetic Invar Alloy Fe<SUB>65</SUB>Ni<SUB>35</SUB>
- Zero Sound Anomaly in a Ferromagnetic I
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抄録
The phonon dispersion of a single crystal of ferromagnetic Invar alloy, Fe65Ni35 has been measured along the high symmetry directions at several temperatures in the small momentum region, q≤0.35 Å−1, by the inelastic neutron scattering. Marked softening of the [110]T1 and [111]T acoustic modes is found below the Curie temperature, Tc=499±2 K. On the contrary, temperature dependent character of the longitudinal modes is quite normal such that their elastic constants increase upon cooling. These results present a striking contrast to the ultrasonic results, which show the anomalous depression for [110]L mode near Tc.<BR>Zero sound anomaly of the transverse mode in the Fe65Ni35 alloy is well interpreted by the coupling of the transverse phonons and the electrons of the 3d band. The specific relation between the elastic softening and the Invar properties is discussed.
収録刊行物
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- Journal of the Physical Society of Japan
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Journal of the Physical Society of Japan 46 (3), 806-814, 1979
一般社団法人 日本物理学会
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詳細情報 詳細情報について
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- CRID
- 1390001204189337216
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- NII論文ID
- 210000088005
- 110001964322
- 130003895864
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- NII書誌ID
- AA00704814
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- BIBCODE
- 1979JPSJ...46..806E
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- COI
- 1:CAS:528:DyaE1MXhvFGrs7g%3D
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 2043607
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 使用不可