Preparation and characterization of quaternary magnetic Fe80-xCoxP14B6 bulk metallic glasses

A new series of quaternary magnetic Fe80-xCoxP14B6 (x = 20, 30, 40, 50, 60 at. %) bulk metallic glasses (BMGs) has been prepared by combining fluxing treatment and J-quenching technique, and the maximum critical diameter for fully glass formation reaches up to 2.0 mm for x = 40 among this series of...

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Bibliographic Details
Published in:Journal of applied physics 2014-05, Vol.115 (20)
Main Authors: Ling, Haibo, Li, Qiang, Li, Hongxiang, Zhang, Jijun, Dong, Yaqiang, Chang, Chuntao, Seonghoon, Yi
Format: Article
Language:English
Subjects:
Amorphous materials
Cobalt
Crystallization
Curie temperature
Fluxing
Glass
Glass transition temperature
Industrial applications
Iron
Magnetic properties
Metallic glasses
Nickel
Temperature
Thermal stability
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Summary:A new series of quaternary magnetic Fe80-xCoxP14B6 (x = 20, 30, 40, 50, 60 at. %) bulk metallic glasses (BMGs) has been prepared by combining fluxing treatment and J-quenching technique, and the maximum critical diameter for fully glass formation reaches up to 2.0 mm for x = 40 among this series of FeCo-based BMGs. The effects of Co content on glass-forming ability, thermal stability, mechanical and magnetic properties of the present FeCo-based BMGs have been systematically investigated. It is found that the highest thermal stability, namely the highest glass transition temperature (Tg) and the onset crystallization temperature (Tx), is achieved when the ratio of Fe and Co contents is 1:1 in the present FeCo-based BMGs. It should be noted that the maximum Curie temperature reaches 791 K when x = 40, which is the highest Curie temperature for (Fe, Co, Ni)-based BMGs so far as is known. Moreover, the present FeCo-based BMGs exhibit very good soft magnetic properties and large room plasticity, which are promising for potential industrial application as high performance functional and structural materials.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4878917