SPECIFIC-HEAT AND ELECTRICAL-CONDUCTIVITY OF DEUTERATED TRIGLYCINE SELENATE SINGLE-CRYSTALS

被引：2

作者：

HAMED, AE ^{[1
]}

KASSEM, ME ^{[1
]}

ELOSAIRY, M ^{[1
]}

OKAZ, AM ^{[1
]}

机构：

[1] UNIV ALEXANDRIA,FAC SCI,DEPT ENGN PHYS & MATH,ALEXANDRIA,EGYPT

来源：

PHASE TRANSITIONS | 1991年 / 29卷 / 04期

关键词：

DTGSE SINGLE CRYSTALS; SPECIFIC HEAT; ELECTRICAL CONDUCTIVITY;

D O I：

10.1080/01411599108207955

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Measurements of the specific heat were carried out on deuterated trigylcine selenate (DTGSe) single crystals to clarify its critical nature near the ferroelectric transition point (Tc). The results obtained have indicated that DTGSe crystals deuterated by 90% exhibit a first-order phase transition. This paper presents also the electrical conductivity (σ) of DTGSe crystals. The deuterium substitution induces an increase in the Curie point Tc, and a decrease in the conductivity in the para- and ferroelectric phases accompanied by an increase in the activation energy (W) in both phases. © 1991, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：219 / 225

页数：7

共 12 条

[1] CRITICAL-BEHAVIOR IN THE HEAT-CAPACITY OF FERROELECTRIC TGS, TGSE, AND TGFB [J].

EMA, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1983, 52 (08) :2798-2809

[2] AC CALORIMETRIC INVESTIGATIONS OF SPECIFIC-HEAT ANOMALY IN FERROELECTRIC TGSE [J].

EMA, K ;

HAMANO, K ;

KURIHARA, K ;

HATTA, I .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1977, 43 (06) :1954-1961

[3]

FATUZZO E, 1967, FERROELECTRICITY, P77

[4] DIELECTRIC STUDY ON PHASE-TRANSITIONS IN TRIGLYCINE SELENATE-DEUTERATED TRIGLYCINE SELENATE SYSTEM [J].

GESI, K .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1976, 41 (02) :565-569

[5]

HAMED AE, 1990, FERROELECTRICS, P110

[6] CRYSTAL STRUCTURE OF THE FERROELECTRIC PHASE OF (GLYCINE)3 H2SO4 [J].

HOSHINO, S ;

OKAYA, Y ;

PEPINSKY, R .

PHYSICAL REVIEW, 1959, 115 (02) :323-330

[7] DEUTERIUM ATOM POSITIONS IN PARAELECTRIC PHASE OF DEUTERATED TRIGLYCINE SULFATE [J].

KAY, MI .

FERROELECTRICS, 1977, 17 (1-2) :415-418

[8] THE INFLUENCE OF L-ALPHA-ALANINE ADMIXTURE, REJUVENATION PROCESS, AND ELECTRIC-FIELD ON THE ELECTRICAL-CONDUCTIVITY OF TGS CRYSTALS [J].

OKAZ, AM ;

ELOSAIRY, M ;

KASSEM, ME ;

HAMED, AE .

PHASE TRANSITIONS, 1989, 18 (1-2) :35-42

[9]

STANKOWSKA J, 1988, POLONICA A, V74, P37

[10]

STANKOWSKA J, 1988, FERROELECTRICS, V81, P103

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