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Giant forced volume magnetostriction in polycrystalline Tb0.3Dy0.7Fe1.95 alloys under magnetomechanical loading |
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| Authors: | Yongmao Pei Daining Fang Faxin Li |
| Affiliation: | a School of Science, Beijing Institute of Technology, Beijing 100081, China b FML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China c State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China |
| Abstract: | The axial and transversal linear magnetostrictions (λ∥ and λ⊥) in [1 1 0] oriented polycrystalline Tb0.3Dy0.7Fe1.95 alloys were measured simultaneously under uniaxial magnetomechanical loading to get the forced volume magnetostriction (ω=λ∥+2λ⊥). Despite the almost zero ω observed in Terfenol-D single crystals, it reaches up to 1000×10−6 in polycrystalline Tb0.3Dy0.7Fe1.95 alloys near the saturation magnetic field under a stress above 50 MPa. |
| Keywords: | Forced volume magnetostriction Magnetomechanical Terfenol-D |
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