Temperature dependence of elastic properties in austenite and martensite of Ni-Mn-Ga epitaxial films

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F18%3A00489353" target="_blank" >RIV/61388998:_____/18:00489353 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/18:00489353

Result on the web

<a href="http://dx.doi.org/10.1016/j.actamat.2017.12.011" target="_blank" >http://dx.doi.org/10.1016/j.actamat.2017.12.011</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.actamat.2017.12.011" target="_blank" >10.1016/j.actamat.2017.12.011</a>

Result language

angličtina

Original language name

Temperature dependence of elastic properties in austenite and martensite of Ni-Mn-Ga epitaxial films

Original language description

Using surface acoustic waves (SAW) the elastic properties of 500 nm thick epitaxial off-stoichiometric Ni-Mn-Ga films prepared by sputtering on MgO substrate were determined in a broad temperature range both in austenite and martensite and across the martensitic transformation. At room temperature the films were in non-modulated martensite with tweed-like microstructure. Structural and magnetic studies proved that the martensitic structure can be considered homogenous on the scale of surface waves owing to the fine twinning. Measured angular dependence of SAW velocities indicated that the averaged in-plane tetragonal structure can be used for the calculation of elastic coefficients in martensite. The phase velocity of SAW showed an anomaly around the phase transition temperature due to changes of the shear elastic coefficients, c'and c(44). During cooling there was a gradual softening of c' in austenite.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10307 - Acoustics

Project

<a href="/en/project/GA17-00062S" target="_blank" >GA17-00062S: Understanding modulated structures in Heusler alloys</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Acta Materialia

ISSN

1359-6454

e-ISSN

—

Volume of the periodical

145

Issue of the periodical within the volume

Feb

Country of publishing house

GB - UNITED KINGDOM

Number of pages

8

Pages from-to

298-305

UT code for WoS article

000424726200029

EID of the result in the Scopus database

2-s2.0-85039449391