MEASUREMENT OF THE AMPLITUDE OF A SPINODAL

被引：31

作者：

HETHERINGTON, MG ^{[1
]}

HYDE, JM ^{[1
]}

MILLER, MK ^{[1
]}

SMITH, GDW ^{[1
]}

机构：

[1] OAK RIDGE NATL LAB, DIV MET & CERAM, OAK RIDGE, TN 37831 USA

来源：

SURFACE SCIENCE | 1991年 / 246卷 / 1-3期

关键词：

D O I：

10.1016/0039-6028(91)90431-Q

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

One of the strengths of the atom-probe is its ability to measure the amplitude of composition fluctuations on a very fine scale. In previous papers, calculation of the amplitude of a spinodal using a sinusoidal composition distribution has been reported. In this paper, a comparison is made between the fit of experimental data from the atom-probe to a sinusoidal distribution and also to the amplitude of the composition variations expected from non-linear theories of the spinodal decomposition. It is shown that, in general, the Langer, Bar-on and Miller (LBM) non-linear theory provides better fits to the data. In particular, the non-linear theory is able to describe the asymmetry of the distribution functions for mean compositions far from the critical composition.

引用

页码：304 / 314

页数：11

共 11 条

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