Magnetostriction in twinned [112] crystals of Tb .27 Dy .73 Fe 2
Magnetostriction in twinned [112] crystals of Tb .27 Dy .73 Fe 2
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DOI：
10.1109/tmag.1986.1064403
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发表时间：
1986-09
影响因子：
2.1
通讯作者：
A. Clark;J. Verhoven;O. Mcmasters;E. Gibson
中科院分区：
文献类型：
--
作者：
A. Clark;J. Verhoven;O. Mcmasters;E. Gibson
研究了由直拉法（a）和（B）制备的立方Laves相Tb0.27Dy0.73Fe2的磁致伸缩性能。区带法进行了研究。发现晶体在[111]法线的孪晶枝晶片中优先沿着[ 11\bar{2} ]生长。[111]方向的饱和磁致伸缩沿着很大（111 = 1640 × 10 - 6），与Tb.27Dy.73Fe2单晶的饱和磁致伸缩非常一致.磁致伸缩沿着[ 11\bar{2} ]大于预期。对于小于2000 Oe的磁场，磁致伸缩要小得多，可能是由于内部能量存储在孪晶边界。
The magnetostrictive properties of cubic Laves phase Tb 0.27 Dy 0.73 Fe 2 prepared by (a) Czochralski and (b) a free standing r.f. zone method, were examined. Crystals were found to grow preferentially along [ 11\bar{2} ] in twinned dendrite sheets with [111] normal. The saturation magnetostriction along [111] is very large ( \lambda_{111} = 1640 \times 10^{-6} ), in excellent agreement with that of single crystal Tb .27 Dy .73 Fe 2 . The magnetostriction along [ 11\bar{2} ] is larger than expected. For magnetic fields less than 2000 Oe, the magnetostriction is much smaller, presumably due to internal energy stored at the twin boundaries.