Positron-annihilation study of icosahedral AlPdMn alloys

被引：41

作者：

Kanazawa, I

Hamada, E

Saeki, T

Sato, K

Nakata, M

Takeuchi, S

Wollgarten, M

机构：

[1] TOKYO GAKUGEI UNIV,DEPT ASTRON & EARTH SCI,KOGANEI,TOKYO 184,JAPAN

[2] SCI UNIV TOKYO,DEPT MAT SCI & TECHNOL,NODA,CHIBA 278,JAPAN

[3] NAGOYA UNIV,DEPT QUANTUM ENGN,CHIKUSA KU,NAGOYA,AICHI 46401,JAPAN

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 79卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.79.2269

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We measured the positron-annihilation lifetime in Al71.4Pd20.2Mn8.4, Al71.9Pd19.7Mn8.4, Al70.2Pd20.3Mn9.5, and Al69.1Pd21.5Mn9.4 polyquasicrystalline icosahedral quasicrystals. As-grown and plastically deformed single quasicrystals of Al70.6Pd21.1Mn8.3 were also studied. In every sample the lifetime spectrum consists of a single component with the lifetime of 206 +/- 4 ps. The results indicate that icosahedral quasicrystalline AlPdMn contains a dense distribution of vacancy-type sites. These trapping sites seem to remain unaltered during plastic deformation at high temperature.

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页码：2269 / 2272

页数：4

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