DIFFUSION IN A PD-CU-SI METALLIC GLASS

被引：160
作者：
CHEN, HS
KIMERLING, LC
POATE, JM
BROWN, WL
机构：
来源：
APPLIED PHYSICS LETTERS | 1978年 / 32卷 / 08期
关键词：
D O I：
10.1063/1.90107
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The diffusivities (D) of a Pd77.5Cu6Si16.5 glass above the glass transition agree within a factor of 3 with diffusivities (Dη) evaluated from viscosity data using the Stokes-Einstein relationship. Below the glass transition, however, the measured D is critically related to the state of structure and can be many orders of magnitude higher than Dη. The time constant for structural relaxation is suggested to be at least three orders of magnitude longer than that for diffusion processes.
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页码：461 / 463
页数：3
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