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Transformation volume strain in Ni-Mn-Ga thin films
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10.1063/1.4772005
/content/aip/journal/apl/101/24/10.1063/1.4772005
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/24/10.1063/1.4772005
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Temperature dependence of residual tensile stress in the film showing relaxation due to martensitic transformation. The thin lines represent a tangential method of the determination of the transformation temperatures.

Image of FIG. 2.
FIG. 2.

Selected X-ray diffraction patterns at different temperatures showing a conversion of 220-type peaks between martensite and austenite.

Image of FIG. 3.
FIG. 3.

Evolution of the lattice parameters a and c of 10 M tetragonal martensite during heating showing a transformation into the cubic austenite (a 0).

Image of FIG. 4.
FIG. 4.

Temperature dependence of the martensitic lattice distortion, c/a (a) and unit cell volume of austenite, V a, and martensite, V m (b) during heating calculated using data in Fig. 3 . Whereas the behavior of lattice distortion is reminiscent to the one in a bulk, a large volume contraction during transformation from martensite to austenite is inverse in comparison with the volume expansion observed in bulk Ni-Mn-Ga alloys.

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/content/aip/journal/apl/101/24/10.1063/1.4772005
2012-12-12
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Transformation volume strain in Ni-Mn-Ga thin films
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/24/10.1063/1.4772005
10.1063/1.4772005
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