Intermediate temperature scale T* in lead-based relaxor systems

被引：174

作者：

Dkhil, B. ^{[1
]}

Gemeiner, P. ^{[1
]}

Al-Barakaty, A. ^{[2
]}

Bellaiche, L. ^{[3
]}

Dul'kin, E. ^{[4
]}

Mojaev, E. ^{[4
]}

Roth, M. ^{[4
]}

机构：

[1] Ecole Cent Paris, Lab Struct Proprietes & Modelisat Solides, CNRS, UMR 8580, F-92295 Chatenay Malabry, France

[2] Umm Al Qura Univ, Dept Phys, Teacher Coll, Mecca 21955, Saudi Arabia

[3] Univ Arkansas, Dept Phys, Fayetteville, AR 72701 USA

[4] Hebrew Univ Jerusalem, Fac Sci, IL-91904 Jerusalem, Israel

来源：

PHYSICAL REVIEW B | 2009年 / 80卷 / 06期

关键词：

Curie temperature; ferroelectric transitions; giant magnetoresistance; lead compounds; nanostructured materials; piezoelectricity; proximity effect (superconductivity); relaxor ferroelectrics; FERROELECTRIC PBMG1/3NB2/3O3; ELECTROMECHANICAL RESPONSE; BEHAVIOR; MANGANITES; SCATTERING; STATES;

D O I：

10.1103/PhysRevB.80.064103

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Via a combination of various experimental and theoretical techniques, a peculiar, identical temperature scale T-* is found to exist in all complex lead-based relaxor ferroelectrics studied by us. T-* corresponds to a nanoscale phase transition associated with random fields. Interestingly, T-* also exists in other oxides with extraordinary properties, such as giant magnetoresistivity or superconductivity. By analogy with such latter systems, the giant piezoelectricity related to relaxors might originate from proximity competing states effect.

引用

页数：6

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