Number of the records: 1
Full variation of site substitution in Ni-Mn-Ga by ferromagnetic transition metals
- 1.
SYSNO ASEP 0547685 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Full variation of site substitution in Ni-Mn-Ga by ferromagnetic transition metals Author(s) Kopecký, Vít (FZU-D) ORCID
Rameš, Michal (FZU-D) RID, ORCID
Veřtát, Petr (FZU-D) RID, ORCID
Colman, R.H. (CZ)
Heczko, Oleg (FZU-D) RID, ORCIDNumber of authors 5 Article number 850 Source Title Metals. - : MDPI
Roč. 11, č. 6 (2021)Number of pages 18 s. Language eng - English Country CH - Switzerland Keywords Ni-Mn-Ga ; doping ; ferromagnetism ; transition metals ; Heusler alloy Subject RIV BM - Solid Matter Physics ; Magnetism OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) GA19-09882S GA ČR - Czech Science Foundation (CSF) LM2018096 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Open access Institutional support FZU-D - RVO:68378271 UT WOS 000666703300001 EID SCOPUS 85106030841 DOI 10.3390/met11060850 Annotation Systematic doping by transition elements Fe, Co and Ni on each site of Ni2 MnGa al- loy reveal that in bulk material the increase in martensitic transformation temperature is usually accompanied by the decrease in ferromagnetic Curie temperature, and vice versa. The highest martensitic transformation temperature (571 K) was found for Ni50.0Mn25.4(Ga20.3Ni4.3) with the result of a reduction in Curie temperature by 55 K. The highest Curie point (444 K) was found in alloy (Ni44.9Co5.1)Mn25.1Ga24.9 however, the transition temperature was reduced to 77 K. The depen- dence of transition temperature is better scaled with the Ne/a parameter (number of non-bonding electrons per atom) compared to usual e/a (valence electrons per atom). Ne/a dependence predicts a disappearance of martensitic transformation in (Ni45.3Fe5.3)Mn23.8Ga25.6, in agreement with our experiment. The doping effect of the same element is different for each compositional site. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2022 Electronic address http://hdl.handle.net/11104/0323874
Number of the records: 1