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Intermartensitic transformation between modulated structures in Ni-Mn-Ga(-Fe) single crystal
- 1.0557167 - FZÚ 2023 RIV GB eng A - Abstract
Heczko, Oleg - Veřtát, Petr - Klicpera, M. - Fabelo, O. - Straka, Ladislav
Intermartensitic transformation between modulated structures in Ni-Mn-Ga(-Fe) single crystal.
Acta Crystallographica Section A-Foundation and Advances. Oxford Blackwell. Roč. 77, Aug. (2021), s. 274-274. ISSN 2053-2733. E-ISSN 2053-2733.
[IUCr Congress /25./. 14.08.2021-22.08.2021, Prague]
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA ČR GA19-09882S
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : intermartensitic * phase transformation * ferroelastic Ni-Mn-Ga * modulated structures * martensite * austenite
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
http://scripts.iucr.org/cgi-bin/paper?S0108767321094083
Heusler alloys close to stoichiometric Ni2MnGa undergo a sequence of difussionless, displacive phase transformations from parent, cubic austenite to various martensitic or ferroelastic phases, modulated 10M and 14M (also marked 5M and 10M) and non-modulated (NM) tetragonal phase depending on composition. Often the cascade of intermartensitic transformations (10M-14M-NM) is observed with decreasing temperature or with increasing mechanical stress [1]. Owing to ferromagnetic state and highly mobile twin boundaries in modulated phases the relatively weak magnetic field can induce the reorientation of ferroelastic domains via twin boundary motion resulting in giant magnetic-field-induced strain up to 12% in single crystal [2] called magnetic shape memory (MSM) effect [3].
Permanent Link: http://hdl.handle.net/11104/0331423
Number of the records: 1