Effect of Si and Al on structural and physical properties of ternary and quaternary Co2Fe-based Heusler alloys

0577452 - ÚFM 2025 RIV NL eng J - Článek v odborném periodiku
Jirásková, Yvonna - Buršík, Jiří - Gembalová, L. - Čížek, J. - Pytlík, R. - Životský, O.
Effect of Si and Al on structural and physical properties of ternary and quaternary Co2Fe-based Heusler alloys.
Physica B-Condensed Matter. Roč. 673, JAN (2024), č. článku 415463. ISSN 0921-4526. E-ISSN 1873-2135
Institucionální podpora: RVO:68081723
Klíčová slova: Heusler alloys * Microstructure * Magnetic properties * MOKE * Mössbauer spectrometry * Positron annihilation
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 2.8, rok: 2022
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S092145262300830X?via%3Dihub

The Z-element related structural and physical properties of the Co2FeZ Heusler alloys prepared by arc melting were subjected to detail bulk and surface studies. The several experimental methods as scanning and transmission electron microscopy, X-ray diffraction, positron annihilation, Mössbauer spectroscopy, completed by magnetic and hardness measurements were applied. The main attention was devoted to differences in all possible properties as morphology, defects, micro- and macro-magnetic behaviour and microhardness depending upon a choice of Si, Al, or Si + Al as the Z element. The best structural homogeneity, smallest grain size, and no grain boundary segregation were observed at Co2FeSi0.5Al0.5, while about ten-times larger grains were obtained at Co2FeSi, the grain boundaries of which were covered by a thin interfacial phase, and at Co2FeAl with formation of dendritic structure. Nearly all physical parameters obtained for the Co2FeSi0.5Al0.5 alloy were found to be influenced by either Si or Al.


Trvalý link: https://hdl.handle.net/11104/0352640