The in situ electrical resistance measurement and differential thermal analysis have been carried out for La68Al10Cu20Co2 and Nd60Al10Ni10Cu20 bulk metallic glasses under pressure up to 4 GPa. The authors observed a clear drop of electrical resistance in the La- and Nd-based glasses at 1.44 and 1.17 GPa at room temperature, respectively, and the sudden change is reversible with decompression. The differential thermal analysis revealed an endothermic process involved in the transition during compression and an exothermic process upon decompression. These results are strongly suggestive of an amorphous to amorphous phase transition induced by pressure in the two bulk metallic glasses.
Published in:
Applied Physics Letters
(Volume:90
,
Issue:
25
)
Date of Publication:
Jun 2007
- Page(s):
-
251903
-
251903-3
- ISSN :
-
0003-6951
- Digital Object Identifier :
-
10.1063/1.2749722
- Product Type:
-
Journals & Magazines
- Date of Current Version :
-
18 June 2009
- Issue Date :
-
Jun 2007