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
收藏
页码：1742 / 1745
页数：4
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