Low temperature a/b nanotwins in Ni50Mn25+x Ga25−x Heusler alloys

We have found low temperature a/b nanotwins having (110) twinning plane in a five-layered modulated martensite phase of Ni50Mn25+xGa25−x (at. %) Heusler alloys and identified the particular region in phase diagram where the nanotwinning occurs. Evolution of the structure with decreasing temperature...

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Veröffentlicht in:	Scientific reports 2018-08, Vol.8 (1), p.1-11
Hauptverfasser:	Straka, L, Drahokoupil, J, Veřtát, P, Zelený, M, Kopeček, J, Sozinov, A, Heczko, O
Format:	Artikel
Sprache:	eng
Schlagworte:	Alloys Crystals Diffraction Low temperature Scanning electron microscopy Temperature effects X-ray diffraction
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Zusammenfassung:	We have found low temperature a/b nanotwins having (110) twinning plane in a five-layered modulated martensite phase of Ni50Mn25+xGa25−x (at. %) Heusler alloys and identified the particular region in phase diagram where the nanotwinning occurs. Evolution of the structure with decreasing temperature was studied by X-ray diffraction using single crystals exhibiting magnetic shape memory effect. The merging of (400) and (040) lines upon cooling for 2.6
ISSN:	2045-2322
DOI:	10.1038/s41598-018-30388-8