Journal ArticleDOI
Crystal structure of martensitic phases in Ni–Mn–Ga shape memory alloys
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TLDR
The crystal structures of the different martensitic phases observed in a wide variety of Ni-Mn-Ga alloy compositions have been studied in detail as discussed by the authors, and two approaches taken from the literature are analysed and discussed.About:
This article is published in Acta Materialia.The article was published on 2000-07-17. It has received 606 citations till now. The article focuses on the topics: Martensite.read more
Citations
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Giant magnetic-field-induced strain in NiMnGa seven-layered martensitic phase
TL;DR: In this paper, a magnetic-field-induced strain of about 9.5% was observed at ambient temperature in a magnetic field of less than 1 T in NiMnGa orthorhombic seven-layered martensitic phase.
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High temperature shape memory alloys
TL;DR: Shape memory alloys (SMAs) with high transformation temperatures can enable simplifications and improvements in operating efficiency of many mechanical components designed to operate at tem... as mentioned in this paper, which can enable simplified and improved operating efficiency.
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Martensitic transitions and the nature of ferromagnetism in the austenitic and martensitic states of Ni-Mn-Sn alloys
TL;DR: In this paper, the structural and magnetic transformations in the Heusler-based system are studied by x-ray diffraction, optical microscopy, differential scanning calorimetry, and magnetization.
Journal ArticleDOI
Ferromagnetism in the austenitic and martensitic states of Ni-Mn-In alloys
TL;DR: In this paper, the magnetic and structural transformations in the Heusler-based system were studied in the composition range $0.05, 0.16, and 0.25, respectively, and the magnetic coupling in both austenitic and martensitic states is ferromagnetic.
Journal ArticleDOI
New materials for micro-scale sensors and actuators An engineering review
Stephen A. Wilson,Renaud Jourdain,Qi Zhang,Robert A. Dorey,Christopher R. Bowen,Magnus Willander,Qamar Ul Wahab,Safaa Al-Hilli,Omer Nur,Eckhard Quandt,Christer Johansson,E. Pagounis,Manfred Kohl,Jovan Matovic,Björn Samel,Wouter van der Wijngaart,Edwin Jager,Daniel O Carlsson,Zoran Djinovic,Michael Wegener,Carmen Moldovan,Rodica Iosub,E. Abad,Michael Wendlandt,Cristina Rusu,Katrin Persson +25 more
TL;DR: In this paper, a detailed overview of developments in transducer materials technology relating to their current and future applications in micro-scale devices is provided. And a short discussion of structural polymers that are extending the range of micro-fabrication techniques available to designers and production engineers beyond the limitations of silicon fabrication technology is presented.
References
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Journal ArticleDOI
Large magnetic‐field‐induced strains in Ni2MnGa single crystals
TL;DR: In this paper, the superelastic motion of twin boundaries in the martensitic phase of Ni2MnGa with magnetic fields of 8 kOe applied at 265 K was found to be associated with the staining.
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Compositional instability of β-phase in Ni-Mn-Ga alloys
TL;DR: In this article, an analysis of previous data concerning the compositional dependence of M{sub s} from the viewpoint of searching for empirical correlation between the electron concentration and stability of {beta}-phase in Ni-Mn-Ga system is presented.
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Adaptive phase formation in martensitic transformation
TL;DR: The adaptive martensite is formed as an elastically constrained phase when the scale of structure heterogeneities induced by the crystal-strain accommodation is reduced to the microscopic scale commensurate with the twin-plane interplanar distance.
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Phonon anomaly, central peak, and microstructures in Ni2MnGa.
TL;DR: Inelastic neutron scattering and transmission electron microscopy have been used to study a single crystal of the MnGa shape-memory ferromagnetic Heusler alloy in a wide temperature range above the martensitic phase transformation at 220 K as mentioned in this paper.