Rapid floating zone growth of Ni.sub.2./sub.MnGa single crystals exhibiting magnetic shape memory functionality

0509460 - FZÚ 2020 RIV NL eng J - Článek v odborném periodiku
Cejpek, P. - Straka, L. - Veis, M. - Colman, R. - Dopita, M. - Holý, V. - Heczko, Oleg
Rapid floating zone growth of Ni₂MnGa single crystals exhibiting magnetic shape memory functionality.
Journal of Alloys and Compounds. Roč. 775, Feb (2019), s. 533-541. ISSN 0925-8388. E-ISSN 1873-4669
Grant CEP: GA ČR GA16-00043S
Institucionální podpora: RVO:68378271
Klíčová slova: magnetic shape memory * MIR * single crystal growth * Ni-Mn-Ga alloys
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 4.650, rok: 2019
Způsob publikování: Omezený přístup
https://doi.org/10.1016/j.jallcom.2018.10.113

To obtain a material exhibiting magnetically induced reorientation (MIR), one of the magnetic shape memory effects, a well-developed method for single crystal growth is crucial. A ½100 oriented Ni2MnGa single crystal exhibiting MIR was successfully prepared using the floating-zone technique with a high speed of 80 mm/h. The comparison with a sample grown by Bridgman method and a reference sample grown in AdaptaMat Ltd. by directional solidification is provided based on elemental homogeneity,crystallographic quality by x-ray diffraction, transformation behaviour and magnetic properties. All these methods indicated that the single crystal grown by floating zone with high speed is comparable or superior to the samples prepared by other methods. Importantly, the magnetization measurement revealed that the single crystal prepared this way exhibits MIR down to 10 K.

Trvalý link: http://hdl.handle.net/11104/0300201