2006•Applied Physics LettersRequires access

High-pressure synthesis of giant magnetostrictive PrxTb1−xFe1.9 alloys

Yangguang Shi, Shaolong Tang, R. L. Wang, Hance Su, Z. D. Han, L. Y. Lv, Yong Du

Abstract

Pr x Tb 1 − x Fe 1.9 (0⩽x⩽1) magnetostrictive alloys with cubic Laves phase have been synthesized by a high-pressure synthesis method. Crystal structure, magnetic properties, magnetocrystalline anisotropy, and the magnetostriction of PrxTb1−xFe1.9 (0⩽x⩽1) alloys are investigated. Composition anisotropy compensation is realized in Pr0.9Tb0.1Fe1.9 alloy, which shows low magnetocrystalline anisotropy and a large magnetostriction value (λ‖−λ⊥=1497ppm) at 13kOe at room temperature. These characters suggest that Pr0.9Tb0.1Fe1.9 alloy may be a promising candidate for magnetostriction application.

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Key concepts: Magnetostriction, Magnetocrystalline anisotropy, Materials science, Anisotropy, Alloy, Laves phase, Condensed matter physics, Magnetic anisotropy