Elastic constants of non-modulated Ni-Mn-Ga martensite
Result description
Room temperature elastic constants of non-modulated (NM) tetragonal martensite of a Mn-rich Ni-Mn-Ga alloy were determined by ultrasonic methods. The results are in good qualitative agreement with ab-initio predictions and confirm that NM martensite exhibits strong elastic anisotropy with shear instability related to the soft acoustic phonons mediating the reverse transition. The geometric arrangement of the softest shearing modes is shown to be identical as for the stress-induced fct martensite of the Fe-31.2 at.%Pd alloy.
Keywords
acoustic methodselastic behaviorferromagnetic shape memory alloysmartensitic phase transformation
The result's identifiers
Result code in IS VaVaI
Alternative codes found
RIV/68378271:_____/17:00474677
Result on the web
DOI - Digital Object Identifier
Alternative languages
Result language
angličtina
Original language name
Elastic constants of non-modulated Ni-Mn-Ga martensite
Original language description
Room temperature elastic constants of non-modulated (NM) tetragonal martensite of a Mn-rich Ni-Mn-Ga alloy were determined by ultrasonic methods. The results are in good qualitative agreement with ab-initio predictions and confirm that NM martensite exhibits strong elastic anisotropy with shear instability related to the soft acoustic phonons mediating the reverse transition. The geometric arrangement of the softest shearing modes is shown to be identical as for the stress-induced fct martensite of the Fe-31.2 at.%Pd alloy.
Czech name
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Czech description
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Classification
Type
Jimp - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
GA17-00062S: Understanding modulated structures in Heusler alloys
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Scripta Materialia
ISSN
1359-6462
e-ISSN
—
Volume of the periodical
136
Issue of the periodical within the volume
July
Country of publishing house
GB - UNITED KINGDOM
Number of pages
3
Pages from-to
20-23
UT code for WoS article
000402943600005
EID of the result in the Scopus database
2-s2.0-85017350737
Basic information
Result type
Jimp - Article in a specialist periodical, which is included in the Web of Science database
OECD FORD
Condensed matter physics (including formerly solid state physics, supercond.)
Year of implementation
2017