INCOMMENSURATE PHASE IN BARIUM SODIUM NIOBATE - THERMAL-ANALYSIS STUDY

被引：5

作者：

ZHU, SN ^{[1
]}

MING, NB ^{[1
]}

DAI, QP ^{[1
]}

机构：

[1] NANJING UNIV,CTR MAT ANAL,NANJING 210008,PEOPLES R CHINA

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.47.15280

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Differential-scanning-calorimetry measurements have been performed on single-crystalline barium sodium niobate from 400 to 900 K. Special attention was paid LO measurements in the temperature range 500-650 K. Three thermal peaks were detected; one was at 850 K near the ferroelectric transition temperature, the two others were at 532 K and 549 K, respectively, and their latent heat was estimated. A specific-heat-capacity anomaly was also observed at 590 K within experimental accuracy. These thermal anomalies are discussed in the framework of the available structure-transition and incommensurate-phase models.

引用

页码：15280 / 15282

页数：3

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