Special Issue "Advances in Caloric Materials"

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystal Engineering".

Deadline for manuscript submissions: 30 November 2018

Special Issue Editor

Guest Editor
Dr. Mohamed Balli

Institut Quantique & Department of Physics, University of Sherbrooke, 2500 Boulevard de l’Université, J1K 2R1, Québec, Canada
Website | E-Mail
Interests: magnetic materials; magnetocaloric materials; caloric materials; magnetic refrigeration; multiferroics; nanomagnetic materials; thin films; single crystals; frustrated magnetism; permanent magnets; soft magnetic materials; structural and physical properties; energy conversion

Special Issue Information

Dear Colleagues,

With growing concerns about harmful gas emissions and the scarcity of energetic resources, one of the main challenges in the refrigeration industry and the international community is to search for clean cooling technologies with higher thermodynamic efficiency. In this context, solid-state materials that exhibit magnetocaloric, electrocaloric and mechanocaloric effects have recently attracted a worldwide interest, owing to their potential utilization as refrigerants in more compact, efficient, and ecofriendly systems. Such thermal responses can be induced by manipulating the ordering parameters of some specific materials when subjected to variations of magnetic, electric and stress fields, respectively. The implementation of these materials would enable us to fully phase out the hazardous synthetic refrigerants present in conventional cooling systems, such as chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), and hydrofluorocarbons (HFCs), while keeping high thermodynamic performance.

In the present Special Issue, we invite investigators to submit papers that discuss the crystalline structure, physical properties and practical aspects of solid-state caloric materials, including, but are not limited to, bulk forms, single crystals, thin films and nanomaterials.

The potential topics include, but are not limited to:

  • Magnetocaloric materials
  • Electrocaloric materials
  • Mechanocaloric materials
  • Bulk, thin films and nanomaterials
  • Growth of caloric materials
  • Crystalline structure and physical properties
  • Measurement of caloric effects under external excitations
  • Prediction of caloric effects in solid state materials
  • Interplay phenomena in caloric materials
  • Numerical simulation of thermodynamic cycles employing caloric materials
  • Experimental tests in functional caloric devices
  • Mechanical and chemical issues
  • Hysteretic effects in caloric materials
  • Electronic structure
  • Rotating magnetocaloric effect
  • Caloric devices

Dr. Mohamed Balli
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Crystals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1200 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Magnetocaloric effect
  • Electrocaloric effect
  • Mechanocaloric effect
  • Caloric materials
  • Growth and synthesis
  • Characterization
  • Fundamental aspects
  • Practical aspects
  • Devices

Published Papers (1 paper)

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Research

Open AccessArticle The Effect of Different Atomic Substitution at Mn Site on Magnetocaloric Effect in Ni50Mn35Co2Sn13 Alloy
Crystals 2018, 8(8), 329; https://doi.org/10.3390/cryst8080329
Received: 23 June 2018 / Revised: 13 August 2018 / Accepted: 15 August 2018 / Published: 18 August 2018
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Abstract
The effect of different atomic substitutions at Mn sites on the magnetic and magnetocaloric properties in Ni50Mn35Co2Sn13 alloy has been studied in detail. The substitution of Ni or Co for Mn atoms might lower the Mn
[...] Read more.
The effect of different atomic substitutions at Mn sites on the magnetic and magnetocaloric properties in Ni50Mn35Co2Sn13 alloy has been studied in detail. The substitution of Ni or Co for Mn atoms might lower the Mn content at Sn sites, which would reduce the d-d hybridization between Ni 3d eg states and the 3d states of excess Mn atoms at Sn sites, thus leading to the decrease of martensitic transformation temperature TM in Ni51Mn34Co2Sn13 and Ni50Mn34Co3Sn13 alloys. On the other hand, the substitution of Sn for Mn atoms in Ni50Mn34Co2Sn14 would enhance the p-d covalent hybridization between the main group element (Sn) and the transition metal element (Mn or Ni) due to the increase of Sn content, thus also reducing the TM by stabilizing the parent phase. Due to the reduction of TM, a magnetostructural martensitic transition from FM austenite to weak-magnetic martensite is realized in Ni51Mn34Co2Sn13 and Ni50Mn34Co2Sn14, resulting in a large magnetocaloric effect around room temperature. For a low field change of 3 T, the maximum ∆SM reaches as high as 30.9 J/kg K for Ni50Mn34Co2Sn14. A linear dependence of ΔSM upon μ0H has been found in Ni50Mn34Co2Sn14, and the origin of this linear relationship has been discussed by numerical analysis of Maxwell’s relation. Full article
(This article belongs to the Special Issue Advances in Caloric Materials)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Planned Paper 1

Title: A magnetocaloric booster unit for energy-efficient air-conditioning

Author: Maria Krautz 1, Christian Jäschke 2, Lars Schinke 3, Maximilian Beyer 2, Anja Waske 1, Joachim Seifert 3
1: IFW Dresden, Institute for Complex Materials, 01069 Dresden, Germany
2: TU Dresden, Institute for Power Engineering, 01069 Dresden, Germany
3: TU Dresden, Institute of Electrical Power Systems and High Voltage Engineering, 01069 Dresden, Germany

Abstract: A novel concept for the application of a magnetocaloric device in energy efficient air conditioners is introduced. In order to evaluate this concept, a test stand has been developed equipped with a cost-effective magnetic field source providing about 1T field change into which different regenerator geometries can be implemented. The powder-in-tube process and tape-casting technology are discussed as promising technologies for shaping magnetocaloric materials into wires or profiled plates that can be readily assembled in the regenerator. Moreover, a model to capture the energy footprint of the magnetocaloric unit in the combined air-conditioner is presented.

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