High performance giant magnetostrictive alloy with (1 10) crystal orientation

High magnetostrictive strains have been obtained in Th0.29Dy0.61Pr0.1Fe1.97Be0.05 polycrystalline samples with (1 10) crystal orientation. The lambda40 and lambda80 values are 1380 and 1560 ppm respectively under a pressure of 6 MPa, which is better than that of samples with (1 12) crystal orientati...

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Bibliographic Details
Published in:Journal of alloys and compounds 2004-11, Vol.381 (1-2), p.226-228
Main Authors: Zhang, Maocai, Gao, Xuexu, Zhou, Shou Zeng, Shi, Zhenhua
Format: Article
Language:English
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Summary:High magnetostrictive strains have been obtained in Th0.29Dy0.61Pr0.1Fe1.97Be0.05 polycrystalline samples with (1 10) crystal orientation. The lambda40 and lambda80 values are 1380 and 1560 ppm respectively under a pressure of 6 MPa, which is better than that of samples with (1 12) crystal orientation. The observed morphologies indicate that the grains with (1 10) axial orientation grow in the form of sheet-like cellular crystals. A rare-earth rich phase (R: Th, Dy), is distributed along the boundaries of the cellular crystals. The excellent magnetostrictive properties originate from the matrix RFe2 phase and are related to texture.
ISSN:0925-8388
DOI:10.1016/j.jallcom.2004.02.056