Anisotropy of piezocaloric effect at ferroelectric phase transitions in ammonium hydrogen sulphate | Научно-инновационный портал СФУ

Anisotropy of piezocaloric effect at ferroelectric phase transitions in ammonium hydrogen sulphate

Тип публикации: статья из журнала

Год издания: 2020

Ключевые слова: Entropy, Ferroelectrics, High-pressure, Phase transition, Piezocaloric effect, Thermal expansionAnisotropy, Ferroelectric devices, Ferroelectricity, Sulfur compounds, Thermal expansion, Ammonium hydrogen sulphate, Barocaloric effects, Comparative analysis, Cooling cycle, Crystallographic axes, Ferroelectric phase transition, Uniaxial pressures, Crystallography

Аннотация: The role of anisotropy of the thermal expansion in formation of piezocaloric effect (PCE) near ferroelectric phase transitions in NH4HSO4 was studied. Strong difference in linear baric coefficients and as a result in intensive and extensive PCE associated with the different crystallographic axes was found. PCE giving the main contribution to the barocaloric effect were determined at both phase transitions. Rather strong effect of the lattice dilatation on the tuning of PCE was observed. Comparative analysis of PCE at the phase transitions in different materials showed that NH4HSO4 can be considered as a promising solid-state refrigerant. A hypothetical cooling cycle based on alternate using uniaxial pressure along two axes was considered.

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Издание

Журнал: Journal of Alloys and Compounds

Выпуск журнала: vol. 839

Номера страниц: 155085

Издатель: Elsevier Ltd

Авторы

  • Mikhaleva E.A. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation)
  • Gorev M.V. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation, Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk, 660074, Russian Federation)
  • Molokeev M.S. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation, Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk, 660074, Russian Federation, Department of Physics, Far Eastern State Transport University, Khabarovsk, 680021, Russian Federation)
  • Kartashev A.V. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation, Astafijev Krasnoyarsk State Pedagogical University, Krasnoyarsk, 660049, Russian Federation)
  • Flerov I.N. (Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation, Institute of Engineering Physics and Radioelectronics, Siberian Federal University, Krasnoyarsk, 660074, Russian Federation)

Вхождение в базы данных

  • Scopus

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