Memory of multiple aging stages above the freezing temperature in the relaxor ferroelectric PLZT

被引：32

作者：

Cordero, F

Craciun, F

Franco, A

Piazza, D

Galassi, C

机构：

[1] CNR, Ist Acust, I-00133 Rome, Italy

[2] CNR, Ist Sistemi Complessi, Area Ric Roma Tor Vergata, I-00133 Rome, Italy

[3] CNR, ISTEC, I-48018 Faenza, Italy

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.93.097601

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The dynamic dielectric susceptibility and the elastic compliance of the relaxor ferroelectric lanthanum lead zirconate titanate (PLZT) 9/65/35 have been measured under different cooling and heating protocols in order to study aging and memory. The memory of multiple aging stages at different temperatures has been found (several dips in the susceptibility curves on heating), as in spin glass systems below the glass transition. Remarkably, in PLZT the memory of several aging stages is retained also above the freezing temperature deduced from the dynamic susceptibilities. The results are discussed in light of the existing models of aging and memory in spin and dipolar glasses.

引用

页码：097601 / 1

页数：4