MAGNETOELASTIC COUPLING AND DELTA-E EFFECT IN TBXDY1-X SINGLE-CRYSTALS

被引：20

作者：

CLARK, AE ^{[1
]}

RESTORFF, JB ^{[1
]}

WUNFOGLE, M ^{[1
]}

LINDBERG, JF ^{[1
]}

机构：

[1] USN,CTR UNDERSEA WARFARE,NEW LONDON,CT 06320

来源：

JOURNAL OF APPLIED PHYSICS | 1993年 / 73卷 / 10期

关键词：

D O I：

10.1063/1.352732

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The elastic moduli of the highly magnetostrictive TbxDy1-x alloys (x =0.5, 0.6, and 0.67) were measured at 77 K under conditions of constant magnetic field and constant magnetic induction. From these values the magnetic contribution to the moduli (intrinsic DELTAE effect) and magnetoelastic coupling factor k were calculated. For Young's moduli measured under constant flux density (magnetically blocked conditions), it was found that E(B) approximately 20 to 50 GPa. For measurements made while maintaining a constant magnetic field (magnetically free conditions), it was found that Young's moduli E(H) minima range from approximately 3 to 5 GPa. Such large differences between E(B) and E(H) yield magnetoelastic coupling factors in excess of 0.9. Theoretical expressions of the magnetic contribution to the elastic compliance, (1/E(H) - 1/E(B)), were derived using the single vector magnetization rotation model.

引用

页码：6150 / 6152

页数：3

共 5 条

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[2]

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