Conventional and inverse barocaloric effects around triple points in ferroelastics (NH4)3NbOF6 and (NH4)3TiOF5

被引：17

作者：

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

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

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

机构：

[1] Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia

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

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

来源：

SCRIPTA MATERIALIA | 2017年 / 139卷

基金：

俄罗斯基础研究基金会;

关键词：

Polymorphic phase transformation; Phase diagram; Order-disorder phenomena; Entropy; Barocaloric effect; PHASE-TRANSITIONS;

D O I：

10.1016/j.scriptamat.2017.06.022

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report the conventional and inverse barocaloric effect (BCE) in ferroelastics (NH4)(3)NbOF6 and (NH4)(3)TiOF5. We found a rich set of the structural phase transitions and triple points on the T - p phase diagrams. Extensive and intensive BCE near some transformations and around triple points in both crystals are outstanding (|Delta S-BCE(max)| = 30-100 J/kg.K; |Delta T-AD(max)| = 4-22 K) and can be achieved at low pressure 0.01-0.60 GPa. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：53 / 57

页数：5

共 17 条

[1] Barocaloric effect in ferroelastic fluorides and oxyfluorides [J].

Flerov, I. N. ;

Gorev, M. V. ;

Bogdanov, E. V. ;

Laptash, N. M. .

FERROELECTRICS, 2016, 500 (01) :153-163

[2]

Flerov IN, 2016, PROGR FLUOR SCI SER, V1, P355, DOI 10.1016/B978-0-12-801639-8.00016-7

[3]

Flerov I. N., 1995, Ferroelectrics, V169, P199, DOI 10.1080/00150199508217330

[4] 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

[5] Phase transitions in elpasolites (ordered perovskites) [J].

Flerov, IN ;

Gorev, MV ;

Aleksandrov, KS ;

Tressaud, A ;

Grannec, J ;

Couzi, M .

MATERIALS SCIENCE & ENGINEERING R-REPORTS, 1998, 24 (03) :81-151

[6] Thermophysical studies of the phase transitions in (NH4)3NbOF6 crystals [J].

Fokina, V. D. ;

Flerov, I. N. ;

Gorev, M. V. ;

Bogdanov, E. V. ;

Bovina, A. F. ;

Laptash, N. M. .

PHYSICS OF THE SOLID STATE, 2007, 49 (08) :1548-1553

[7] 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

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

Gschneidner, KA ;

Pecharsky, VK ;

Tsokol, AO .

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

[9] Giant barocaloric effects at low pressure in ferrielectric ammonium sulphate [J].

Lloveras, P. ;

Stern-Taulats, E. ;

Barrio, M. ;

Tamarit, J-Ll ;

Crossley, S. ;

Li, W. ;

Pomjakushin, V. ;

Planes, A. ;

Manosa, Ll ;

Mathur, N. D. ;

Moya, X. .

NATURE COMMUNICATIONS, 2015, 6

[10] Materials with Giant Mechanocaloric Effects: Cooling by Strength [J].

Manosa, Lluis ;

Planes, Antoni .

ADVANCED MATERIALS, 2017, 29 (11)

← 1 2 →