Advanced Materials for Application in Solid State Refrigeration

A special issue of Inorganics (ISSN 2304-6740). This special issue belongs to the section "Inorganic Solid-State Chemistry".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 1988

Special Issue Editors


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Guest Editor
Instituto de Física Armando Dias Tavares, Universidade do Estado do Rio de Janeiro, Rio de Janeiro 20550-900, Brazil
Interests: solid-state refrigeration; caloric effect; mean field theory; rare-earth; intermetallics; spin-crossover

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Guest Editor
Ames Laboratory of U.S. Department of Energy, Iowa State University, Ames, IA 50011 USA
Interests: materials science; solid state chemistry and physics; crystallography; magnetocaloric refrigeration

Special Issue Information

Dear Colleagues,

One of the solid-state physics applications, among the countless technologies, is refrigeration, which has been used by humanity since prehistoric times. Currently, most refrigerators are based on the compression/decompression of gases, highlighted as being primarily responsible for the destruction of the ozone layer, as well as contributing to the greenhouse effect. An ecofriendly alternative would be to replace these gases with solid materials that exhibit one (or more) of the caloric effects, which correspond to the thermal responses when an external field is applied. This external field can be, for example, a magnetic field (magnocaloric), pressure (barocaloric), and stress (mechanocaloric).

Dr. Paula O. Ribeiro
Dr. Yaroslav Mudryk
Guest Editors

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Keywords

  • solid-state refrigeration
  • caloric effect
  • magnetism
  • magnetic materials
  • phase transitions
  • materials science
  • cooling technologies

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Published Papers (1 paper)

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Research

14 pages, 6129 KiB  
Article
Influence of Sintering Additives on Modified (Ba,Sr)(Sn,Ti)O3 for Electrocaloric Application
by Zhenglyu Li, Christian Molin and Sylvia E. Gebhardt
Inorganics 2023, 11(4), 151; https://doi.org/10.3390/inorganics11040151 - 1 Apr 2023
Cited by 4 | Viewed by 1427
Abstract
This paper reports on the influence of sintering additives CuO and MgO on the recently developed lead-free electrocaloric (EC) material Ba0.82Sr0.18Sn0.065Ti0.935O3 (BSSnT-18-6.5). Details on the sintering behavior and the resulting microstructure of bulk ceramic [...] Read more.
This paper reports on the influence of sintering additives CuO and MgO on the recently developed lead-free electrocaloric (EC) material Ba0.82Sr0.18Sn0.065Ti0.935O3 (BSSnT-18-6.5). Details on the sintering behavior and the resulting microstructure of bulk ceramic samples prepared through solid-state synthesis and their dielectric, ferroelectric, and electrocaloric properties are presented. On the one hand, the addition of CuO (xCuO = 2%) significantly reduced the sintering temperature from 1400 °C to 1150 °C. On the other hand, the addition of MgO (xMgO = 1%) dramatically reduced the average grain size from 40 µm to 0.4 µm, leading to an increase in dielectric breakdown strength from 4.4 V µm−1 to 7.7 V µm−1. Thus, BSSnT-18-6.5 with the addition of MgO to bulk ceramic samples could achieve maximum EC temperature changes (|ΔTEC|) of 0.27 K around 30 °C with almost no aberration within a broad temperature range from 5 °C to 50 °C under an applied electric field change of 5 V µm−1. The results show the potential of this material for the fabrication of multilayer ceramic (MLC) components for future electrocaloric applications. Full article
(This article belongs to the Special Issue Advanced Materials for Application in Solid State Refrigeration)
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