Inelastic neutron scattering study of the dynamics of the AlNiCo decagonal phase

被引:29
作者
Dugain, F
de Boissieu, M
Shibata, K
Currat, R
Sato, TJ
Kortan, AR
Suck, JB
Hradil, K
Frey, F
Tsai, AP
机构
[1] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
[2] Inst Natl Polytech Grenoble, UJF, Thermodynam & Physicochim Met Lab, F-38402 St Martin Dheres, France
[3] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 98077, Japan
[4] Natl Res Inst Met, Tsukuba, Ibaraki 305, Japan
[5] AT&T Bell Labs, Lucent Technol, Murray Hill, NJ 07974 USA
[6] Tech Univ Chemnitz Zwickau, Inst Phys, D-09107 Chemnitz, Germany
[7] LMU Munchen, Inst Kristallog, D-80333 Munich, Germany
关键词
D O I
10.1007/s100510050640
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
The dynamics of the decagonal AlNiCo phase has been investigated on a single-grain quasicrystalline sample using inelastic neutron scattering. The decagonal structure can be viewed as a periodic stacking of quasiperiodic planes. The anisotropy between the modes propagating in the periodic and quasiperiodic directions is found to be much weaker than theoretically predicted. A strong resonance splitting is observed at an energy transfer of 15 meV for transverse modes polarized in the quasiperiodic plane.
引用
收藏
页码:513 / 516
页数:4
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