Magnetocaloric properties and magnetic cooling performance of low-cost Fe75-xCrxAl25 alloys

Vinay Sharma; Subhasish Pattanaik; Harshida Parmar; R. V. Ramanujan

doi:10.1557/mrc.2018.122

Magnetocaloric properties and magnetic cooling performance of low-cost Fe_75-xCr_xAl₂₅ alloys

Vinay Sharma, Subhasish Pattanaik, Harshida Parmar, R. V. Ramanujan^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

Low-cost, earth-abundant magnetocaloric materials (MCMs) are required for energy-efficient, green, and affordable magnetic cooling technology. We investigated the magnetic and magnetocaloric properties of rare-earth-free Fe_75-xCr_xAl₂₅ (19≤x≤25) arc-melted alloys. The Curie temperature (Tc) of these alloys could be tuned from 220 K up to room temperature by Cr additions. The relative cooling power/US$ was found to be superior to other promising MCMs. Fe⁵⁰Cr²⁵Al²⁵ ball-milled powders, with an average particle size of ~25 nm, were used to prepare magnetic fluid. Maximum cooling (ΔT) of 5.4°C was observed for Fe50Cr25Al25-based fluids.

Original language	English
Pages (from-to)	988-994
Number of pages	7
Journal	MRS Communications
Volume	8
Issue number	3
DOIs	https://doi.org/10.1557/mrc.2018.122
Publication status	Published - Sept 1 2018
Externally published	Yes

Bibliographical note

Publisher Copyright:
Copyright © Materials Research Society 2018.

ASJC Scopus Subject Areas

General Materials Science

Access to Document

10.1557/mrc.2018.122

Cite this

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title = "Magnetocaloric properties and magnetic cooling performance of low-cost Fe75-xCrxAl25 alloys",

abstract = "Low-cost, earth-abundant magnetocaloric materials (MCMs) are required for energy-efficient, green, and affordable magnetic cooling technology. We investigated the magnetic and magnetocaloric properties of rare-earth-free Fe75-xCrxAl25 (19≤x≤25) arc-melted alloys. The Curie temperature (Tc) of these alloys could be tuned from 220 K up to room temperature by Cr additions. The relative cooling power/US$ was found to be superior to other promising MCMs. Fe50Cr25Al25 ball-milled powders, with an average particle size of ~25 nm, were used to prepare magnetic fluid. Maximum cooling (ΔT) of 5.4°C was observed for Fe50Cr25Al25-based fluids.",

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