DEVELOPMENT OF FLUCTUATIONS INTO DOMAINS DURING ORDERING IN FE3AL

被引：54

作者：

PARK, B

STEPHENSON, GB

ALLEN, SM

LUDWIG, KF

机构：

[1] IBM CORP,THOMAS J WATSON RES CTR,DIV RES,YORKTOWN HTS,NY 10598

[2] MIT,CAMBRIDGE,MA 02139

[3] BOSTON UNIV,BOSTON,MA 02215

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 11期

关键词：

D O I：

10.1103/PhysRevLett.68.1742

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The early-stage kinetics of a second-order phase transition with a nonconserved order parameter (the B2-DO3 transition in Fe3Al) has been investigated using in situ synchrotron x-ray scattering. A line-shape analysis allows the short- and long-range-order components to be determined separately as a function of time during the ordering process. At all temperatures investigated, the correlation length of short-range-order fluctuations xi(t) grows to a maximum and then decreases, while the long-range-order domain size L(t) increases monotonically from an initial value 1 order of magnitude larger than xi.

引用

页码：1742 / 1745

页数：4

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