Jana, Parijat P and Anand, K S and Chanda, Barnasree and Chelvane, J Arout and Das, Jayanta (2023) Evolution of microstructure, magneto-structural transformation, and magnetocaloric effect in(Fe72-0.9xNi8-0.1xCo8)Zr7B4Cu1Gax (0 <= x <= 6 at. %) alloys. Materials Science and Engineering B-Advanced Functional Solid-State Materials, 287. Art No-116121. ISSN 0921-5107

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We report the evolution of microstructure, magnetic properties, and magnetocaloric effects in a series of (Fe72-0.9xNi8-0.1xCo8)Zr7B4Cu1Gax (0 <= x <= 6 at.%) alloys. The high temperature X-ray diffraction, calorimetric, and thermomagnetic studies revealed that the alpha-Fe -> gamma-Fe transformation occurred in the range of 691-733 K in arc -melted ingots (AMIs), whereas the same occurred at 660-723 K in as-spun ribbons (ASRs). The Curie temperature of gamma phase lies in the range of 1126-1140 K and 1106-1126 K for AMIs and ASRs, respectively. Addition of Ga reduces the saturation magnetization and induce nanocrystallization in ASRs. A second-order magnetic transition has been identified in x = 0 ASR using Arrott plot exhibiting magnetic entropy change (|Delta SM|) of 0.973 J/kg.K at T gamma C under magnetic field of 0.976 T. The refrigeration capacity of x = 0 and x = 6 ASRs has been estimated to be 12.78 J/kg and 22.98 J/kg, respectively, at 0.976 T.

Item Type: Article
Subjects: Engineering Materials
Depositing User: Bidhan Chaudhuri
Date Deposited: 30 Aug 2023 07:50
Last Modified: 30 Aug 2023 07:50
URI: http://cgcri.csircentral.net/id/eprint/5461

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