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Başlık: Magnetocaloric effect and temperature -dependent magnetoresistance in Cu-doped FeCoNiBSiNb amorphous alloys
Yazarlar: Civan, Ersin
Uludağ Üniversitesi/Fen-Edebiyat Fakültesi/Fizik Bölümü.
0000-0002-8871-2357
Şarlar, Kağan
Küçük, İlker
GXN-2736-2022
B-8159-2016
55550817200
6602910810
Anahtar kelimeler: Materials science
Magnetic entropy change
Magnetocaloric effect
Metallic glasses
Temperature-dependent magnetoresistance
Bulk metallic glasses
Magnetic entropy change
Room-temperature
Forming ability
Refrigeration
Transition
Fe
Si
Amorphous alloys
Amorphous silicon
Copper
Curie temperature
Entropy
Functional materials
Galvanomagnetic effects
Glass
High temperature applications
Magnetism
Magnetocaloric effects
Magnetoresistance
Melt spinning
Metallic glass
Nickel
Silicon
Fe-based metallic glass
Magnetic entropy change
Magnetic refrigerants
Magnetoresistance properties
Maximum temperature
Refrigeration capacity
Temperature dependent
Temperature range
Copper alloys
Yayın Tarihi: 24-May-2017
Yayıncı: Elsevier
Atıf: Şarlar, K. vd. (2017). ''Magnetocaloric effect and temperature -dependent magnetoresistance in Cu-doped FeCoNiBSiNb amorphous alloys''. Journal of Non-Crystalline Solids, 471, 169-174.
Özet: In this work, magnetocaloric and magnetoresistance properties of Fe-based (Fe(0.402)Co(0.201)Ni(0.067)Bo(0.227)Si(0.053)Nb(0.05))(100-x)Cu-x (x = 0, 0.5, 0.75, 1) amorphous ribbons formed by melt-spinning method and the effect of Cu on these properties were investigated. Curie temperature (T-C) was not changed with the addition of Cu up to 0.5% to the composition. On the other hand, for Fe-based (Fe(0.402)Co(0.201)Ni(0.067)Bo(0.227)Si(0.053)Nb(0.05))(100-x)Cu-x (x = 0.75 and 1), T-C increased from 505 K (for x = 0.5) to 526 K (for x = 0.75) and almost remain constant for x = 1. Maximum magnetic entropy change (-Delta S-M)(max) and refrigeration capacity (RC) values were found to be in the range of 0.62-1.25 Jkg(-1)K(-1) and 62-158.75 Jkg(-1) respectively for (Fe(0.402)Co(0.201)Ni(0.067)Bo(0.227)Si(0.053)Nb(0.05))(100-x)Cu-x (x = 0, 0.5, 0.75, 1) amorphous ribbons under a maximum field of 2 T. These values are comparable with those of previously studied Fe-based metallic glasses. In addition, the maximum temperature dependent magnetoresistance (MR (%)) values for (Fe(0.402)Co(0.201)Ni(0.067)Bo(0.227)Si(0.053)Nb(0.05))(100-x)Cu-x (x = 0, 0.5, 0.75, 1) were found to be 125, 17, 7, and 1% around the Curie temperatures under an applied field of 1 T, respectively. The magnetoresistance values of Cu-free Fe-based glassy alloy are higher than those of Cu-doped alloys. The results show that appropriate amount of Cu substitution (x = 0.75, 1) can enhance the RC and (-Delta S-M)(max). The suitable RC, large magnetoresistance, good thermal stability, and negligible hysteresis offer that these Fe-based glassy alloys exhibit promising applications as high-temperature magnetic refrigerants and multifunctional materials working in the temperature range of 400-600 K.
URI: https://doi.org/10.1016/j.jnoncrysol.2017.05.037
https://www.sciencedirect.com/science/article/pii/S0022309317302958
1873-4812
http://hdl.handle.net/11452/30475
ISSN: 0022-3093
Koleksiyonlarda Görünür:Scopus
Web of Science

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