Specific heat under uniaxial stress

被引：0

作者：

Del Cerro, J ^{[1
]}

Gallardo, MC ^{[1
]}

Jimenez, J ^{[1
]}

机构：

[1] Univ Sevilla, CSIC, Inst Mixto Ciencia Mat, Seville, Spain

来源：

PHASE TRANSITIONS | 1997年 / 64卷 / 1-2期

关键词：

specific heat; pressure; uniaxial stress; strontium titanate; DKDP;

D O I：

暂无

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

An experimental approach for the adaptation of conventional calorimetric techniques for measurements under uniaxial stress is reviewed. Special attention is focused on the description of the use of the a.c. method for measuring specific heat under uniaxial stress. The application of isoperibolic calorimetry to specific heat measurements under uniaxial stress is described in detail. The method has been tested at low stress by studying the influence of uniaxial stress on the change of dimensionality of the order parameter of strontium titanate. Measurements of the specific heat and heat power exchanged by a deuterated dihydrogen potassium phosphate sample at the ferroelectric-ferroelastic phase transition are also included. These measurements show the advantages of this method for the study of first-order transitions under uniaxial stress.

引用

页码：25 / 44

页数：20

共 32 条

[1] THERMAL-CONDUCTIVITY AND HEAT-CAPACITY OF SINGLE-CRYSTAL LIF AND CAF2 UNDER HYDROSTATIC-PRESSURE [J].

ANDERSSON, S ;

BACKSTROM, G .

JOURNAL OF PHYSICS C-SOLID STATE PHYSICS, 1987, 20 (35) :5951-5962

[2] TECHNIQUES FOR DETERMINING THERMAL-CONDUCTIVITY AND HEAT-CAPACITY UNDER HYDROSTATIC-PRESSURE [J].

ANDERSSON, S ;

BACKSTROM, G .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1986, 57 (08) :1633-1639

[3]

Bantle W, 1942, HELV PHYS ACTA, V15, P373

[4]

BOHN H, 1990, Z PHYS B, V83, P105

[5] PHASE FRONT SHAPES IN THE KD2PO4 PARAELECTRIC-FERROELECTRIC TRANSITION [J].

BORNAREL, J ;

CACH, R .

JOURNAL OF PHYSICS-CONDENSED MATTER, 1993, 5 (18) :2977-2986

[6] NEW MEASUREMENT METHOD OF THERMAL PROPERTIES BY MEANS OF FLUX CALORIMETRY. [J].

del Cerro, J. .

Journal of Physics E: Scientific Instruments, 1987, 20 (6 pt 1) :609-611

[7] Specific heat measurements under non-equilibrium conditions [J].

DelCerro, J ;

Martin, JM ;

Ramos, S .

JOURNAL OF THERMAL ANALYSIS, 1996, 47 (06) :1691-1700

[8] SIMULTANEOUS MEASUREMENT OF THERMAL-PROPERTIES IN FERROELECTRIC-CRYSTALS [J].

DELCERRO, J .

JOURNAL OF THERMAL ANALYSIS, 1988, 34 (01) :335-344

[9] METHOD FOR THE DETERMINATION OF THE SPECIFIC-HEAT OF METALS AT LOW-TEMPERATURES UNDER HIGH-PRESSURES [J].

EICHLER, A ;

GEY, W .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1979, 50 (11) :1445-1452

[10]

EICHLER A, 1980, PHYS B, V38, P21

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