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Glass formability of the Tb–Ni binary alloys and the magnetic properties of the Tb65Ni35 metallic glass
Intermetallics ( IF 4.4 ) Pub Date : 2022-07-10 , DOI: 10.1016/j.intermet.2022.107650
L.L. Pan , Q. Wang , X. Zhou , B.Z. Tang , P. Yu , D. Ding , L. Xia

The binary TbxNi100-x (x = 60, 65, 70, 75) alloys were melt-spun into the shape of ribbons with a thickness of ∼40 μm and the glass formability of the binary alloys was studied. The mechanism for the better glass formability of the Tb65Ni35 alloy, and the factors that influence the magnetocaloric properties of the amorphous ribbon, were investigated. It was found that only the Tb65Ni35 ribbon is fully amorphous and thus the Tb65Ni35 alloy is the best glass former in the binary alloy system. The glassy ribbon shows a spin-freezing-like behavior with a spin-freezing-temperature of ∼54 K and a Curie temperature of ∼64 K. The maximum magnetic entropy change (–ΔSmpeak) of 8.7 J/(kg K) and a moderate saturation magnetostriction (λ, ∼131 ppm at 40 K and ∼242 ppm at 10 K) under 5 T were observed in the Tb65Ni35 amorphous ribbon.



中文翻译:

Tb-Ni二元合金的玻璃成形性和Tb65Ni35金属玻璃的磁性能

将二元 Tb x Ni 100-x (x = 60, 65, 70, 75) 合金熔纺成厚度约为 40 μm 的带状,并研究了二元合金的玻璃成型性。研究了Tb 65 Ni 35合金更好的玻璃成形性的机理,以及影响非晶薄带磁热性能的因素。发现只有 Tb 65 Ni 35带是完全无定形的,因此 Tb 65 Ni 35合金是二元合金体系中最好的玻璃形成剂。玻璃带表现出类似自旋冻结的行为,自旋冻结温度为~54 K,居里温度为~64 K。最大磁熵变化(-Δ S m peak)为8.7 J /(kg K ) 和在 Tb 65 Ni 35非晶带中观察到在 5 T 下的中等饱和磁致伸缩(λ,在 40 K 时约为 131 ppm,在 10 K 时约为 242 ppm) 。

更新日期:2022-07-11
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