Large magnetostriction over a wide temperature range in a Nd0.2TbxDy0.8−xFe1.93 Laves compound
| العنوان: | Large magnetostriction over a wide temperature range in a Nd0.2TbxDy0.8−xFe1.93 Laves compound |
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| المؤلفون: | Y. G. Shi, H. H. Ding, C. R. Xia, X. Q. Ke, S. L. Tang |
| المصدر: | Applied Physics Letters. 121:212401 |
| بيانات النشر: | AIP Publishing, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Physics and Astronomy (miscellaneous) |
| الوصف: | Rare-earth-based magnetostrictive alloys exhibit giant low-field magnetostriction due to anisotropy compensation at specific compositions and temperatures. However, the normally strong temperature dependency of magnetostriction is a common issue that limits its application temperature range. Here, we found that low-field magnetostrictive properties were optimized over a wide temperature range in a low-cost Nd0.2Tb xDy0.8− xFe1.93 system. A 140 K temperature window with λ ≥ 750 ppm at 2 kOe was achieved in the Nd0.2Tb0.3Dy0.5Fe1.93 compound, which is about 2.7 times wider than that in the well-known Terfenol-D composition. The construction of the Nd0.2Tb xDy0.8− xFe1.93 spin reorientation phase diagram revealed a slightly steeper slope of the phase boundary than that of the Nd-free system. Further analysis shows that a steep phase boundary allows the optimized composition to maintain low magnetocrystalline anisotropy and, thus, large low-field magnetostriction in a wide temperature range. The findings in this work may provide a route for designing wide-temperature-operating magnetostrictive materials by searching the phase boundary with a steep slope. |
| تدمد: | 1077-3118 0003-6951 |
| DOI: | 10.1063/5.0120137 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::5937a22210e43b94c7a27e56e822f19c https://doi.org/10.1063/5.0120137 |
| رقم الانضمام: | edsair.doi...........5937a22210e43b94c7a27e56e822f19c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10773118 00036951 |
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| DOI: | 10.1063/5.0120137 |