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Enhanced magnetostrictive effect in epoxy-bonded TbxDy0.92-xNd0.1(Fe0.8Co0.2)1.93 pseudo 1-3 particulate composites.
- Source :
-
Journal of Applied Physics . 2015, Vol. 117 Issue 17, p17A914-1-17A914-4. 4p. 5 Graphs. - Publication Year :
- 2015
-
Abstract
- The spin configuration and spontaneous magnetostriction λ111 of TbxDy0.92-xNd0.1(Fe0.8Co0.2)1.93 (0.20⩽x⩽0.60) alloys have been investigated. The easy magnetization direction (EMD) at room temperature was observed towards the (111) axis when 0.40⩽x⩽0.60, accompanied by a rhombohedral distortion with large spontaneous magnetostriction coefficients λ111, which increases from 1640 ppm for x=0.40 to 1900 ppm for x=0.60. The strong (111)-oriented pseudo 1-3 particulate composite was fabricated by embedding and aligning particles in a passive epoxy matrix under an applied magnetic field. An enhanced magnetostrictive effect, the large low-field magnetostriction, λa, as high as 480 ppm at 3 kOe, was obtained for the sample of x=0.40, in an excess of 75% of its polycrystalline alloy although it only contains 27 vol.% alloy particles. This enhanced effect can be attributed to its low magnetic anisotropy, anisotropic magnetostrictive nature (e.g., λ111 ≠λ100, (111)EMD), chain structure, and the (111)-textured orientation. In addition, we give a direct experimental support that the (111)EMD of particle and the strong (111)-textured orientation are the crucial factors to realize the enhanced magnetostrictive effect in 1-3 particulate composites. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MAGNETOSTRICTIVE devices
*ALLOYS
*MAGNETIZATION
*METALLIC composites
*MICROALLOYING
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 117
- Issue :
- 17
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 102606278
- Full Text :
- https://doi.org/10.1063/1.4916507