Switching the soft shearing mode orientation in Ni-Mn-Ga non-modulated martensite by Co and Cu doping

0535748 - ÚT 2021 RIV GB eng J - Článek v odborném periodiku
Bodnárová, Lucie - Zelený, M. - Sedlák, Petr - Straka, Ladislav - Heczko, Oleg - Sozinov, A. - Seiner, Hanuš
Switching the soft shearing mode orientation in Ni-Mn-Ga non-modulated martensite by Co and Cu doping.
Smart Materials and Structures. Roč. 29, č. 4 (2020), č. článku 045022. ISSN 0964-1726. E-ISSN 1361-665X
Grant CEP: GA ČR(CZ) GA17-00062S
Institucionální podpora: RVO:61388998 ; RVO:68378271
Klíčová slova: magnetic shape memory * elastic constants * acoustic methods * ab initio calculations * resonant ultrasound spectroscopy
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.); Condensed matter physics (including formerly solid state physics, supercond.) (FZU-D)
Impakt faktor: 3.585, rok: 2020
Způsob publikování: Omezený přístup
https://iopscience.iop.org/article/10.1088/1361-665X/ab7542/meta

Resonant ultrasound spectroscopy measurements and density functional theory calculations were used to analyze the effect of Co and Cu doping (3-6 at. %) on elastic constants of non-modulated martensite of the Ni-Mn-Ga ferromagnetic shape memory alloy. Due to the doping, the studied alloys exhibited decreased tetragonal ratios c/a = 1.14. Both the experiments and the calculations revealed that the lowering of the c/a ratio resulted in a change of the orientation of the softest shearing modes of the tetragonal lattice.
Trvalý link: http://hdl.handle.net/11104/0314741