Glass forming ability and critical exponents in Hf-Modified Fe-Zr-B-Cu amorphous alloys for near room temperature magnetocaloric application.

Anjana Vinod, D Arvindha Babu, N V Rama Rao, M M Raja, K Guruvidyathri, S Srinath, W Madhuri

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Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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7 authors.

Anjana VinodSchool of Advanced Sciences, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu, India.

D Arvindha BabuDefence Metallurgical Research Laboratory, Hyderabad, 500058, Telangana, India.

N V Rama RaoDefence Metallurgical Research Laboratory, Hyderabad, 500058, Telangana, India.

M M RajaDefence Metallurgical Research Laboratory, Hyderabad, 500058, Telangana, India.

K GuruvidyathriUniversity of Hyderabad, Hyderabad, 500 046, India.

S SrinathUniversity of Hyderabad, Hyderabad, 500 046, India.

W MadhuriCeramic Composites Laboratory, Centre for Functional Materials, Vellore Institute of Technology, Vellore, Tamil Nadu, India. madhuriw12@hotmail.com.

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Abstract

Rare earth free magnetocaloric materials have emerged as a potential candidate for application in magnetic refrigeration presented in this work. A systematic investigation of Hafnium (Hf) substitution effects on the structural, thermal, magnetic, and magnetocaloric properties of rare earth free Fe-Zr-B-Cu alloys, synthesized via arc melting and melt spinning is reported in the present work. Comprehensive characterization using X-ray diffraction, differential scanning calorimetry, and vibrating sample magnetometry reveals enhanced magnetocaloric performance, with magnetic entropy change [Formula: see text] ≈ 1.856 J/kg K, 1.767 J/kg K, full-width at half-maximum ([Formula: see text]) of 12.59 K, 31.98 K, and relative cooling power [Formula: see text] ≈ 23.36 J/kg, 56.50 J/kg under 2.5 T for Fe

Indexed as

Critical behaviourFe-Zr-B-CuHf substitutionMagnetocaloric effectMean-field modelWidom scaling relation

Identifiers

PMID40624158

DOI10.1103/PhysRev.136.A1626

PMCPMC12234888

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