Journal
MATERIALS
Volume 14, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/ma14041002
Keywords
amorphous materials; curie temperature; magnetic entropy change
Categories
Funding
- National Natural Science Foundation of China [52071196, 51871139, 51671119, 51675323]
- Shanghai Natural Science Foundation Project [20ZR1421000]
- Materials Science and Engineering Discipline of Shanghai Polytechnic University [XXKZD1601]
- Open project of China Key Laboratory [19AZ02]
- Shanghai Polytechnic University 2021 Youth Academic Backbone Training Project [EGD21QD17]
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The study systematically investigated the Curie temperature (Tc) and magnetic entropy change (-Delta S-m) of Tb-Co metallic glasses and their relationship to alloy composition. It was found that the non-linear compositional dependence of Tb-Co interaction due to the existence of orbital momentum in Tb may explain the non-linear relationship between Tc and Tb content, as well as the maximum -Delta S-m vs. Tc -2/3 plots in Tb-Co binary amorphous alloys.
The Curie temperature (T-c) and magnetic entropy change (-Delta S-m), and their relationship to the alloy composition of Tb-Co metallic glasses, were studied systematically in this paper. It was found that, in contrast to the situation in amorphous Gd-Co ribbons, the dependence of Tc on Tb content and the maximum -Delta S-m vs. T-c -2/3 plots in Tb-Co binary amorphous alloys do not follow a linear relationship, both of which are supposed to be closely related to the non-linear compositional dependence of Tb-Co interaction due to the existence of orbital momentum in Tb.
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