A POSITRON-ANNIHILATION STUDY OF CRYSTALLINE, QUASI-CRYSTALLINE AND AMORPHOUS AL-CU-T (T = FE, V) ALLOYS

被引：10
|
作者：
LAWTHER, DW
BEYDAGHYAN, G
DUNLAP, RA
机构：
[1] Dept. of Phys., Dalhousie Univ., Halifax, NS
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 1990年 / 2卷 / 28期
关键词：
D O I：
10.1088/0953-8984/2/28/016
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Results of a Doppler broadening positron annihilation study on crystalline, quasicrystalline and amorphous Al-Cu-T (T=FeV) alloys are presented. For the first time it is shown that a quasicrystal (Al65Cu 20Fe15) can be prepared with a positron trapping site concentration below the sensitivity of positron annihilation spectroscopy. The results and those of similar studies previously reported for quasicrystalline Al-Mn-Si and Al-Cu-Li are discussed in conjunction with possible stabilisation mechanisms.
引用
收藏
页码：6239 / 6244
页数：6
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