MAGNETIC AND MAGNETOCALORIC PROPERTIES OF MELT-SPUN GDXAG100-X ALLOYS

被引：10

作者：

FUERST, CD ^{[1
]}

HERBST, JF ^{[1
]}

MISHRA, RK ^{[1
]}

MCMICHAEL, RD ^{[1
]}

机构：

[1] NIST,GAITHERSBURG,MD 20899

来源：

JOURNAL OF APPLIED PHYSICS | 1994年 / 76卷 / 10期

关键词：

D O I：

10.1063/1.358317

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

With the object of assessing their magnetocaloric properties, we have prepared GdxAg100-x alloys (x=50, 70, 75, 77.5, 80, 100) by melt spinning. The microstructures of the melt-spun ribbons were investigated by x-ray diffraction and transmission electron microscopy. Data from field- and temperature-dependent magnetization measurements were used to calculate the field-induced entropy change ΔS. The Gd-only ribbons are characterized by a single ΔS peak near 280 K. For the GdxAg100-x (70≤x≤80) materials ΔS contains another peak in the 100-120 K range which we ascribe to an amorphous, ferromagnetic Gd-Ag component. We find melt-spun Gd50Ag50 ribbons to consist primarily of crystalline GdAg (cubic CsCl structure), which is antiferromagnetic.

引用

页码：6301 / 6303

页数：3

共 12 条

[1]

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[2] MONTE-CARLO AND MEAN-FIELD CALCULATIONS OF THE MAGNETOCALORIC EFFECT OF FERROMAGNETICALLY INTERACTING CLUSTERS [J].