Magneto-structural correlations in Fe-25 at%Al influenced by substitution of Fe by Co and by thermal treatment

0556897 - ÚFM 2023 RIV CH eng J - Journal Article
Jirásková, Yvonna - Pizúrová, Naděžda - Buršík, Jiří - Friák, Martin - Čízek, J. - Vlasák, T. - Čegan, T. - Nikodým, M. - Luňáček, J.
Magneto-structural correlations in Fe-25 at%Al influenced by substitution of Fe by Co and by thermal treatment.
Journal of Alloys and Compounds. Roč. 904, MAY (2022), č. článku 163996. ISSN 0925-8388. E-ISSN 1873-4669
Research Infrastructure: e-INFRA CZ - 90140
Institutional support: RVO:68081723
Keywords : magnetic-properties * phase separations * mossbauer * spectroscopy * hysteresis * parameters * positrons * compound * defect * Microstructure * Fe-Al(Co) alloys * Magnetic properties * Positron annihilation spectroscopy * Mossbauer spectrometry * Vacancies
OECD category: Materials engineering
Impact factor: 6.2, year: 2022
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0925838822003875?via%3Dihub

The scanning electron microscopy, X-ray diffraction, positron annihilation spectroscopy, Mossbauer spectrometry, and measurements of magnetic characteristics by vibrating sample magnetometer complemented by theoretical simulations are applied in the present investigations of the Fe-Al-Co alloys with 25 at% Al and Co substituting Fe in amount of 15 at% or 25 at%. The alloys prepared by slightly different technologies resulting in different structural morphologies are subjected to thermal treatment followed by slow cooling and water cooling. It is shown that the alloy with lower Co content and the initial A2 structure is more sensitive to the thermal treatments from the viewpoints of changes in morphology, defects concentration and magnetic properties in comparison to the other one with the initial B2 structure. This is reflected almost in all experimentally obtained results.(c) 2022 Elsevier B.V. All rights reserved.
Permanent Link: http://hdl.handle.net/11104/0331014