Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/84155
Title: Magnetocaloric effect in amorphous and partially crystallized Fe40Ni38Mo4B18 alloys
Authors: Thanveer, T.
Thomas, S.
Ramanujan, Raju Vijayaraghavan
Keywords: Amorphous magnetic materials
Amorphous state
Issue Date: 2016
Source: Thanveer, T., Ramanujan, R. V., & Thomas, S. (2016). Magnetocaloric effect in amorphous and partially crystallized Fe40Ni38Mo4B18 alloys. AIP Advances, 6(5), 055322-.
Series/Report no.: AIP Advances
Abstract: A study of magnetocaloric effect in amorphous and partially crystallized Fe40 Ni 38 Mo 4B18 alloys is reported. Amorphous Fe40 Ni 38 Mo 4B18, near its magnetic ordering temperature (600K) showed a magnetic entropy change ΔSM of 1.1 J/KgK and a relative cooling power of 36J/Kg in a field change of 10 kOe. Amorphous samples were partially crystallized by annealing at 700 K at different time intervals. Partially crystallized samples showed two distinct magnetic ordering temperature, one corresponding to the precipitated FeNi nanocrystals and the other one corresponding to the boron rich amorphous matrix. Magnetic ordering temperature of the residual amorphous matrix got shifted to the lower temperatures on increasing the annealing duration. Partially crystallised samples showed a magnetic entropy change of about 0.27J/kgK near the magnetic ordering temperature of the amorphous matrix (540K) in a field change of 10 kOe. The decrease in ΔSM on partial crystallisation is attributed to the biphasic magnetic nature of the sample.
URI: https://hdl.handle.net/10356/84155
http://hdl.handle.net/10220/41649
ISSN: 2158-3226
DOI: 10.1063/1.4952969
Rights: © 2016 The Author(s) (published by American Institute of Physics). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MSE Journal Articles

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