Lattice Instability in Cubic Cu69.2Al25.4Ni5.4 Related to Martensitic Phase Transition
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- Morii Yukio
- Japan Atomic Energy Research Institute
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- Iizumi Masashi
- Japan Atomic Energy Research Institute
書誌事項
- タイトル別名
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- Lattice Instability in Cubic Cu<SUB>69.2</SUB>Al<SUB>25.4</SUB>Ni<SUB>5.4</SUB> Related to Martensitic Phase Transition
- Lattice Instability in Cubic Cu69.2Al25
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The dispersion relation of [110] TA1 phonon (e⁄⁄[1\bar10]) of β1-phase Cu69.2Al25.4Ni5.4 was measured extensively at 261, 295 and 372 K by neutron scattering technique. It was found that the dispersion surface of the transverse acoustic mode has a pronounced valley along the [110] axis. The temperature dependence of the phonon energy shows a partial softening of the phonon mode. An anomalous dip of the dispersion curve was observed around q=(2⁄3)qmax on the [110] axis. Interplaner force-constant analysis revealed that the lattice dynamics of the crystal indicates dual instabilities both to the 2H and 18R type martensites. Quasielastic scattering was investigated on and in the vicinity of the [110] axis. Peaks attributable to the 2H and 18R martensites were observed as functions of temperature, which also indicates that 2H and 18R are competing.
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 54 (8), 2948-2954, 1985
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
- 1390001204185619200
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- NII論文ID
- 110001967537
- 210000092204
- 130003898756
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- NII書誌ID
- AA00704814
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- BIBCODE
- 1985JPSJ...54.2948M
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- COI
- 1:CAS:528:DyaL2MXlslSitrs%3D
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- ISSN
- 13474073
- 00319015
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- NDL書誌ID
- 3040350
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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
- Crossref
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- 使用不可