Scaling in the time domain:: Universal dynamics of order fluctuations in Fe3Al

被引：14
作者：
Mocuta, C
Reichert, H [1 ]
Mecke, K
Dosch, H
Drakopoulos, M
机构：
[1] Max Planck Inst Met Res, D-70569 Stuttgart, Germany
[2] Univ Stuttgart, Inst Theoret & Angew Phys, D-70569 Stuttgart, Germany
[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France
来源：
SCIENCE | 2005年 / 308卷 / 5726期
关键词：
D O I：
10.1126/science.1110001
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
By focusing a highly brilliant synchrotron x-ray beam to a micrometer spot on a sample, we measured in real time the x-ray intensity fluctuations associated with order fluctuations in crystalline materials. We applied this method to the binary alloy Fe3Al near its continuous A2-B2 phase transformation and determined a specific four-point time correlation function for the order parameter. From a detailed theoretical analysis, dynamical scaling in the time domain with a transition from noncritical to critical dynamics is disclosed.
引用
收藏
页码：1287 / 1291
页数：5
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