Pressure-induced polyamorphism in Nd60Fe30Al10 and Ce70Al10Cu20 metallic glasses by high-energy X-ray diffraction and electrical resistance measurements. Issue 1 (2nd January 2017)

• Record Type: Journal Article
• Authors: Zhang, Linji; Wang, Junlong; Tang, Fei; Yang, HongWang; Liu, Xiuru; Zhao, Yong; Yang, Wenge
• Is Part Of: High pressure research. Volume 37:Issue 1(2017)
• Page Start: 11
• Page End: 17
• Publication Date: 2017-01-02
• Subjects: Metallic glasses -- polyamorphism -- high pressure -- strip opposite anvil; High pressure (Science) -- Periodicals; High pressure (Technology) -- Periodicals; 536.41
• DOI: 10.1080/08957959.2016.1269898
• Languages: English
• ISSNs: 0895-7959

Abstract

ABSTRACT: In situ high-energy X-ray diffraction of Nd60 Fe30 Al10 and Ce70 Al10 Cu20 metallic glasses is carried out under high pressure. During compression, Ce70 Al10 Cu20 and Nd60 Fe30 Al10 exhibit a polyamorphic transition from low-density state below 2.0 and 10.0 GPa, to high-density state above 8.4 and 21.1 GPa, respectively. The intermediate hysteresis regions are the mixture of both phases. Electrical resistance measurements under high pressure show that Ce70 Al10 Cu20 display a discontinuous change in pressure dependence curve of resistivity at around 1.7 GPa. The addition of Fe atom gives a significant standoff of phase transition pressure in Nd60 Fe30 Al10 . The results in this work suggest that the solute element and microstructure of lanthanide solvent aggregates have implications on the polyamorphic transition in metallic glasses.