Тип публикации: статья из журнала

Год издания: 2021

Идентификатор DOI: 10.1016/j.scriptamat.2020.09.030

Ключевые слова: polymorphic phase transformation, phase diagram, order-disorder phenomena, entropy, caloric effects

Аннотация: We report the influence of anisotropy and texture on elasto(ElCE)- and baro(BCE)-caloric effects in singlecrystal and ceramic (NH4)(2)SO4. Inverse extensive and intensive ElCE in ceramics, (Delta S-ElCE)(cer) = 87 J/kg.K; Delta T-AD = - 11.6 K), as well as in a single crystal along the ferroelectric axis alpha, (Delta S-ElCE)(a) = Показать полностью115 J/kg.K; (Delta T-AD)(a) = - 16 K, significantly exceed BCE, Delta S-BCE = 75 J/kg.K; Delta T-AD = - 9.8 K, even at low pressure - 0.3 GPa. Caloric parameters of ammonium sulphate are comparable with those for promising solid-state refrigerants. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Журнал: SCRIPTA MATERIALIA

Выпуск журнала: Vol. 191

Номера страниц: 149-154

ISSN журнала: 13596462

Место издания: OXFORD

Издатель: PERGAMON-ELSEVIER SCIENCE LTD

• Mikhaleva Ekaterina (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia)
• Gorev Mikhail (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk 660074, Russia)
• Bondarev Vitaly (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk 660074, Russia)
• Bogdanov Evgeny (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Krasnoyarsk State Agr Univ, Inst Engn Syst & Energy, Krasnoyarsk 660049, Russia)
• Flerov Igor (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Inst Engn Phys & Radioelect, Krasnoyarsk 660074, Russia)

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