Features of the Behavior of the Barocaloric Effect near Ferroelectric Phase Transition Close to the Tricritical Point

被引：10

作者：

Mikhaleva, E. A. ^{[1
]}

Flerov, I. N. ^{[1
,2
]}

Gorev, M., V ^{[1
,2
]}

Bondarev, V. S. ^{[1
,2
]}

Bogdanov, E., V ^{[1
,3
]}

机构：

[1] Russian Acad Sci, Fed Res Ctr KSC, Kirensky Inst Phys, Siberian Branch, Krasnoyarsk 660036, Russia

[2] Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk 660074, Russia

[3] Krasnoyarsk State Agr Univ, Inst Engn Syst & Energy, Krasnoyarsk 660049, Russia

来源：

CRYSTALS | 2020年 / 10卷 / 01期

基金：

俄罗斯科学基金会;

关键词：

polymorphic phase transformation; phase diagram; order-disorder phenomena; entropy; barocaloric effect; TEMPERATURE-RANGE; HEAT-CAPACITY;

D O I：

10.3390/cryst10010051

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

A detailed study of the effect of temperature and pressure on heat capacity, entropy and hysteresis phenomena near the ferroelectric phase transition in ammonium sulfate (AS) was performed. An analysis of experimental results within the framework of the phenomenological theory showed that taking into account the temperature-dependent part of the anomalous entropy leads to a significant increase in the barocaloric effect (BCE). The maximum values of extensive and intensive BCE near the tricritical point are outstanding: Delta S-BCE(max) approximate to 85 J/kgK, Delta T-AD(max) approximate to 12 K and can be achieved at low pressure similar to 0.5 GPa.

引用

页数：9

共 28 条

[1]

Aleksandrov B., 1993, Semeistvo Sulfata Kaliya

[2]

Aleksandrov K. S., 1979, Soviet Physics - Solid State, V21, P195

[3] Review of alternative cooling technologies [J].

Brown, J. Steven ;

Domanski, Piotr A. .

APPLIED THERMAL ENGINEERING, 2014, 64 (1-2) :252-262

[4] Heat capacity, thermal expansion and barocaloric effect in fluoride K2TaF7 [J].

Flerov, I. N. ;

Gorev, M. V. ;

Kartashev, A. V. ;

Pogorel'tsev, E. I. ;

Laptash, N. M. .

JOURNAL OF MATERIALS SCIENCE, 2019, 54 (23) :14287-14295

[5] Calorimetric and x-ray diffraction studies of the (NH4)3WO3F3 and (NH4)3TiOF5 perovskite-like oxyfluorides [J].

Flerov, IN ;

Gorev, MV ;

Fokina, VD ;

Bovina, AF ;

Laptash, NM .

PHYSICS OF THE SOLID STATE, 2004, 46 (05) :915-921

[6] Barocaloric effect near the structural phase transition in the Rb2KTiOF5 oxyfluoride [J].

Gorev, M. V. ;

Flerov, I. N. ;

Bogdanov, E. V. ;

Voronov, V. N. ;

Laptash, N. M. .

PHYSICS OF THE SOLID STATE, 2010, 52 (02) :377-383

[7] Conventional and inverse barocaloric effects in ferroelectric NH4HSO4 [J].

Gorev, Mikhail, V ;

Mikhaleva, Ekaterina A. ;

Flerov, Igor N. ;

Bogdanov, Evgeniy, V .

JOURNAL OF ALLOYS AND COMPOUNDS, 2019, 806 :1047-1051

[8] Recent developments in magnetocaloric materials [J].

Gschneidner, KA ;

Pecharsky, VK ;

Tsokol, AO .

REPORTS ON PROGRESS IN PHYSICS, 2005, 68 (06) :1479-1539

[9] DIELECTRIC AND THERMAL STUDY OF (NH4)2SO4 AND (NH4)2BEF4 TRANSITIONS [J].

HOSHINO, S ;

VEDAM, K ;

OKAYA, Y ;

PEPINSKY, R .

PHYSICAL REVIEW, 1958, 112 (02) :405-412

[10] Adiabatic calorimetric study of the intense magnetocaloric effect and the heat capacity of (La0.4Eu0.6)0.7Pb0.3MnO3 [J].

Kartashev, A. V. ;

Flerov, I. N. ;

Volkov, N. V. ;

Sablina, K. A. .

PHYSICS OF THE SOLID STATE, 2008, 50 (11) :2115-2120

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