Sm 0.88 Dy 0.12 Fe 2 rod composites were fabricated under a compaction pressure of 800 MPa along the rod direction and in a magnetic field of 200 kA/m along the direction, perpendicular to the rod axis. It is found that the magnetostriction λ || parallel to the rod direction is almost unchanged with increasing the compressive stress up to 20 MPa and shows a large unsaturated magnetostriction value of -620 × 10 -6 at 600 kA/m. The magnetostriction λ ⊥ perpendicular to rod axis increases with increasing the compressive stress when the magnetic field is larger than 300 kA/m. The variation of the magnetostriction and magnetization with compressive stress has been discussed. This result is very important to application of Sm-Dy-Fe composites.
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The compressive stress effect on the magnetostriction and magnetization for Sm-Dy-Fe composites
Wang, Bowen; Wang, Zhihua; Hao, Yanming; Weng, Ling; Huang, Wenmei; Yan, Weili
Follow Journal of Applied Physics
, Volume 111 (7)
American Institute of Physics – Apr 1, 2012
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