Concentration dependence of the electric field gradient in PbZr1-xTixO3 ceramics

被引：1

作者：

Olzon-Dionysio, M ^{[1
]}

Souza, SD

Ayala, AP

Carbonari, A

Longo, E

机构：

[1] Univ Fed Sao Carlos, Dept Fis, Sao Carlos, SP, Brazil

[2] Univ Fed Ceara, Dept Fis, Fortaleza, Ceara, Brazil

[3] IPEN CNEN SP, Sao Paulo, Brazil

[4] Univ Fed Sao Carlos, Dept Quim, Sao Carlos, SP, Brazil

来源：

HYPERFINE INTERACTIONS | 2001年 / 136卷 / 3-8期

关键词：

D O I：

10.1023/A:1020570707357

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The concentration dependence of the electric field gradient (EFG) in PZT ceramics was studied by Time Differential Perturbed Angular Correlations (PAC) using the Ta-181 radioactive probe in samples with x = 0 3, 0.5 and 0.8 at room temperature. This phase presents two sites, probably related to defects close to probes, caused by oxygen and lead vacancies. We can also state that both the paraelectric and ferroelectric phases of these systems have two sites with different characteristics and that the high-frequency quadrupolar frequency site presents the highest fraction. The concentration dependence revealed by our results is discussed by comparing the latter with previous PAC studies.

引用

页码：523 / 528

页数：6

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