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Title: Designed materials with the giant magnetocaloric effect near room temperature

Abstract

The coupling between structural and magnetic degrees of freedom is crucial for realization of interesting physical phenomena associated with magneto-structural transformations resembling austenite-to-martensite transitions. Despite substantial efforts in design and discovery of materials with strong magnetocaloric effects, a majority of viable candidates are composed of non-earth-abundant and toxic elements, while others involve challenging syntheses and post processing. Here, guided by advanced density functional theory calculations, we report a new family of compounds, i.e., Mn 0.5Fe 0.5NiSi 1-xAl x [x = 0.045–0.07] exhibiting a giant magnetocaloric effect (MCE) that is tunable near room temperature. Their MCE functionality arises from a distinct magneto-structural transformation between a paramagnetic hexagonal Ni 2In-type phase and ferromagnetic orthorhombic TiNiSi-type phase that can be actuated by magnetic field and/or pressure. As the transition is sensitive to external hydrostatic pressure, the same materials should also exhibit a strong barocaloric response in addition to the giant MCE.

Authors:
 [1]; ORCiD logo [1];  [1];  [1]; ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [1]
  1. Ames Lab., and Iowa State Univ., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1575215
Report Number(s):
IS-J-10053
Journal ID: ISSN 1359-6454
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Acta Materialia
Additional Journal Information:
Journal Volume: 180; Journal Issue: C; Journal ID: ISSN 1359-6454
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Giant magnetocaloric effect; Magnetic refrigeration; Magnetostructural transition; Barocaloric effect

Citation Formats

Biswas, Anis, Pathak, Arjun K., Zarkevich, Nikolai A., Liu, Xubo, Mudryk, Yaroslav, Balema, Viktor, Johnson, Duane D., and Pecharsky, Vitalij K. Designed materials with the giant magnetocaloric effect near room temperature. United States: N. p., 2019. Web. doi:10.1016/j.actamat.2019.09.023.
Biswas, Anis, Pathak, Arjun K., Zarkevich, Nikolai A., Liu, Xubo, Mudryk, Yaroslav, Balema, Viktor, Johnson, Duane D., & Pecharsky, Vitalij K. Designed materials with the giant magnetocaloric effect near room temperature. United States. doi:10.1016/j.actamat.2019.09.023.
Biswas, Anis, Pathak, Arjun K., Zarkevich, Nikolai A., Liu, Xubo, Mudryk, Yaroslav, Balema, Viktor, Johnson, Duane D., and Pecharsky, Vitalij K. Fri . "Designed materials with the giant magnetocaloric effect near room temperature". United States. doi:10.1016/j.actamat.2019.09.023.
@article{osti_1575215,
title = {Designed materials with the giant magnetocaloric effect near room temperature},
author = {Biswas, Anis and Pathak, Arjun K. and Zarkevich, Nikolai A. and Liu, Xubo and Mudryk, Yaroslav and Balema, Viktor and Johnson, Duane D. and Pecharsky, Vitalij K.},
abstractNote = {The coupling between structural and magnetic degrees of freedom is crucial for realization of interesting physical phenomena associated with magneto-structural transformations resembling austenite-to-martensite transitions. Despite substantial efforts in design and discovery of materials with strong magnetocaloric effects, a majority of viable candidates are composed of non-earth-abundant and toxic elements, while others involve challenging syntheses and post processing. Here, guided by advanced density functional theory calculations, we report a new family of compounds, i.e., Mn0.5Fe0.5NiSi1-xAlx [x = 0.045–0.07] exhibiting a giant magnetocaloric effect (MCE) that is tunable near room temperature. Their MCE functionality arises from a distinct magneto-structural transformation between a paramagnetic hexagonal Ni2In-type phase and ferromagnetic orthorhombic TiNiSi-type phase that can be actuated by magnetic field and/or pressure. As the transition is sensitive to external hydrostatic pressure, the same materials should also exhibit a strong barocaloric response in addition to the giant MCE.},
doi = {10.1016/j.actamat.2019.09.023},
journal = {Acta Materialia},
issn = {1359-6454},
number = C,
volume = 180,
place = {United States},
year = {2019},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on September 20, 2020
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