| Original Articles |
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Magnetostriction of the Oriented Crystals in a TbDyFe Alloy |
| JIANG Cheng-bao;ZHOU Shou-zeng1;WANG Run1 |
| Department of Materials Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083
1State Key Laboratory for Advanced Materials, University of Science and Technology Beijing, Beijing 100083
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| Cite this article: |
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JIANG Cheng-bao, ZHOU Shou-zeng, WANG Run 1998 Chin. Phys. Lett. 15 379-381 |
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Abstract The preferred growth directions of Tb0.3Dy0.7Fe1.95 grown by a super-high temperature gradient zone melting directional solidification technique were examined over a large range of the crystal growth velocity (0.5-30 mm/min). The [110] preferred growth direction was found in most case, and the [112] orientation only existed with a certain solidification condition. The magnetostriction of the[110] oriented samples was poor and had no obvious “stress effect”, which exists in [110] perfect crystals according to alculation. The difference of the magnetostriction between the actual and perfect [110] oriented crystal was discussed in detail. The poor magnetostriction of the [110] oriented samples was attributed to the special 109.5°angular with two (111) twin growth mechanism, which resulted in the [114] direction along axis in twins, and only the[110] along axis in master.
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| Keywords:
75.80.+q
75.20.En
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Published: 01 May 1998
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| PACS: |
75.80.+q
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(Magnetomechanical effects, magnetostriction)
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75.20.En
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(Metals and alloys)
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