Time-temperature superposition of structural relaxation in a viscous metallic liquid

被引：87

作者：

Meyer, A ^{[1
]}

Busch, R

Schober, H

机构：

[1] NIST, Ctr Neutron Res, Gaithersburg, MD 20899 USA

[2] Univ Maryland, Dept Mat & Nucl Engn, College Pk, MD 20742 USA

[3] CALTECH, WM Keck Labs Engn Mat, Pasadena, CA 91125 USA

[4] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France

[5] Tech Univ Munich, Dept Phys, D-85747 Garching, Germany

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.83.5027

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Bulk metallic glass-forming Pd40Ni10Cu30P20 has been investigated in its equilibrium liquid by quasielastic neutron scattering. The quasielastic signal exhibits a structural relaxation as known from nonmetallic viscous liquids. Even well above the melting point, the structural relaxation is nonexponential and obeys a universal time-temperature superposition. From the mean relaxation times average diffusivities have been determined, resulting in values on a 10(-10) m(2) s(-1) scale, 3 orders of magnitude slower than in simple metallic liquids.

引用

页码：5027 / 5029

页数：3

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