Please use this identifier to cite or link to this item: http://hdl.handle.net/11452/30747
Title: Improving magnetocaloric properties of Fe68-xCrxTb5B23Nb4 (x=0, 2, 4, 6 and 8) metallic glasses having high glass-forming ability with tunable Curie temperature
Authors: Civan, Ersin
Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Fizik Bölümü.
0000-0002-8871-2357
Sarlar, Kağan
Küçük, İlker
B-8159-2016
GXN-2736-2022
55550817200
6602910810
Keywords: Materials science
Metallurgy & metallurgical engineering
Physics
Magnetic entropy change
Magnetocaloric effect
Metallic glasses
Soft-magnetic properties
Room-temperature
Fe
Alloys
NB
Refrigeration
Substitution
Elements
Si
Casting
Curie temperature
Entropy
Glass
Iron alloys
Magnetism
Magnetocaloric effects
Metals
Bulk metallic glass
Glass-forming ability
Magnetic entropy change
Magnetic refrigerant materials
Magnetocaloric properties
Near room temperature
Refrigeration capacity
Temperature intervals
Metallic glass
Issue Date: 1-Mar-2017
Publisher: Taylor & Francis
Citation: Civan, E. vd. (2017). ''Improving magnetocaloric properties of Fe68-xCrxTb5B23Nb4 (x=0, 2, 4, 6 and 8) metallic glasses having high glass-forming ability with tunable Curie temperature''. Philosophical Magazine, 97(18), Part A, 1464-1478.
Abstract: The impacts of adding Cr on the Curie temperature (T-C), glass-forming ability (GFA), and magnetocaloric effect were studied in Fe68-xCrxTb5B23Nb4 (x = 0, 2, 4, 6 and 8) metallic glasses prepared by suction casting. GFA depends on Cr content in the composition. For Fe68-xCrxTb5B23Nb4 bulk metallic glasses (BMGs), with critical diameters up to similar to 3 mm can be produced by suction casting and maximum value of GFA was found for x = 6. By exchanging Cr with Fe partially, T-C could effectively be adjusted in a quite broad temperature interval from 487 K for x = 0 to 267 K for x = 8, whereas maximum magnetic entropy change decreased from 1.16 to 0.53 Jkg(-1) K-1 and refrigeration capacity (RC) changed from 116 to 45.05 J/kg under a low field change of 2 T. Though T-C is shifted to room temperature, maximum magnetic entropy change and RC decreased almost half of the base alloy. To enhance these properties (Fe0.62Cr0.06Tb0.05B0.23Nb0.04)(100-y)Cu-y (y = 0.75, 1), metallic glasses are prepared. By the help of small addition of Cu, magnetocaloric properties can be effectively increased without changing the T-C. These findings show that the successful synthesis of the Fe-based Fe62Cr6Tb5B23Nb4 and (Fe0.62Cr0.06Tb0.05B0.23Nb0.04)(100-y)Cu-y (y = 0.75, 1) BMGs near room temperature, could be considered as promising candidates as magnetic refrigerant materials.
URI: https://doi.org/10.1080/14786435.2017.1303578
https://www.tandfonline.com/doi/full/10.1080/14786435.2017.1303578
1478-6443
http://hdl.handle.net/11452/30747
ISSN: 1478-6435
Appears in Collections:Scopus
Web of Science

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