Driving rate effects in avalanche-mediated first-order phase transitions -: art. no. 195701

被引：72

作者：

Pérez-Reche, FJ

Tadic, B

Mañosa, L

Planes, A

Vives, E

机构：

[1] Univ Barcelona, Fac Fis, Dept Estructura & Constituents Mat, E-08028 Barcelona, Spain

[2] Jozef Stefan Inst, Dept Theoret Phys, SI-1001 Ljubljana, Slovenia

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.93.195701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the driving-rate and temperature dependence of the power-law exponents that characterize the avalanche distribution in first-order phase transitions. Measurements of acoustic emission in structural transitions in Cu-Zn-Al and Cu-Al-Ni are presented. We show how the observed behavior emerges within a general framework of competing time scales of avalanche relaxation, driving rate, and thermal fluctuations. We confirm our findings by numerical simulations of a prototype model.

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页码：195701 / 1

页数：4

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