Magnetic and thermal properties of (NdxFe1−x)82.5B17.5 glasses

Materials Science and Engineering Pub Date : 1988-03-01 DOI:10.1016/0025-5416(88)90313-8

Z. Altounian, D.H. Ryan

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引用次数: 8

Abstract

The effects of iron substitution by neodymium on the structural and magnetic properties of glassy FeB at the eutectic composition have been studied. Metallic glasses of composition (Nd_xFe_1−x)_82.5B_17.5 were obtained by melt spinning for 0 ⩽ x ⩽ 0.25. The crystallization temperature (measured at a heating rate of 40 K min⁻¹) rises to a maximum of 956 K at x = 0.10 and then falls as x → 0.25 because of the appearance of tetragonal Nd₂Fe₁₄B as the primary crystallization product. The ordering temperature and iron moment are both extremely sensitive to alloying with neodymium, decreasing with $d T_{c} d x = 950 K (at.% Nd)^{−1}$ and dμ_Fe/dx = 4.7μ_B (at.% Nd)⁻¹ respectively, and even by x = 0.2 the neodymium dominates the magnetic properties.

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(NdxFe1−x)82.5B17.5玻璃的磁性和热性能

研究了钕取代铁对共晶成分中玻璃态铁B的结构和磁性能的影响。通过熔体纺丝得到了成分为(NdxFe1−x)82.5B17.5的金属玻璃，温度为0≤x≤0.25。在加热速率为40k min - 1时，结晶温度在x = 0.10时达到最大值956 K，然后在x→0.25时下降，这是由于四方Nd2Fe14B作为一次结晶产物的出现。排序温度和铁矩对钕合金化极为敏感，当dTcdx = 950 K (at)时降低。% Nd)−1,dμFe/dx = 4.7μB (at。% Nd)−1，甚至在x = 0.2时，钕占主导地位。

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