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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >From bulk to film magnetostrictive actuators
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From bulk to film magnetostrictive actuators

机译：从散装到薄膜磁致伸缩执行器

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Bulk 3d-4f intermetallic compounds exhibiting a giant magnetostriction at room temperature have been developed since 1975 by A.E. Clark. Until recently, attempts to obtain thin films with high magnetoelastic coupling had failed, due to the sperimagnetic character of amorphous R-Fe-2 alloys. Two ways have been recently proposed for overcoming this problem, namely preparing (i) R-Fe-2 nanocrystalline alloys, and (ii) R-Co-2 amorphous alloys. Both methods have shown to be promising while still further improved performances have been reached using composite materials as for example multilayer systems (similar to the spring-magnets), which exhibit giant magnetostrictivity (exceeding 1000 MPaT-1 under only 2 mT). We shall review these new materials of interest for microsystems. (C) 1998 Elsevier Science S.A. [References: 11]
机译：自1975年以来，A.E。Clark就开发了在室温下表现出巨大磁致伸缩性的块状3d-4f金属间化合物。直到最近，由于非晶R-Fe-2合金的螺磁特性，获得具有高磁弹性耦合薄膜的尝试一直失败。最近提出了两种方法来克服该问题，即制备（i）R-Fe-2纳米晶体合金，和（ii）R-Co-2非晶态合金。这两种方法都显示出了希望，同时使用复合材料（例如多层系统（类似于弹簧磁体））还可以进一步提高性能，这些系统表现出巨大的磁致伸缩性（仅在2 mT时超过1000 MPaT-1）。我们将审查微系统感兴趣的这些新材料。 （C）1998 Elsevier Science S.A. [参考：11]

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