Surface magneto-optical and Mössbauer observations of Fe-Al

0392351 - ÚFM 2014 RIV NL eng J - Journal Article
Jirásková, Yvonna - Hendrych, A. - Životský, O. - Buršík, Jiří - Žák, Tomáš - Procházka, I. - Janičkovič, D.
Surface magneto-optical and Mössbauer observations of Fe-Al.
Applied Surface Science. Roč. 276, JUL 1 (2013), s. 68-75. ISSN 0169-4332. E-ISSN 1873-5584
R&D Projects: GA MŠMT 7AMB12SK009
Institutional support: RVO:68081723
Keywords : Iron aluminides * Surface structure * Magnetic domain * Magneto-optical effect * Mössbauer spectroscopy
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.538, year: 2013

The paper is devoted to detailed surface studies of the Fe82Al18 alloy prepared from high purity Fe and Al by arc melting. The results summarise observations of the surface sensitive methods – high resolution scanning electron microscopy (HRSEM), slow energy electron microscopy (SLEEM), magneto-optical Kerr effect (MOKE), and conversion electron Mössbauer spectrometry (CEMS). Morphology of grains and grain boundaries obtained by HRSEM is in more detail observed by SLEEM. The CEMS results analysed using free components with characteristic hyperfine parameters and by theoretical model, give evidence for A2 order of the as-prepared and as-quenched Fe82Al18 sample surfaces with small contribution of the oxide layer influencing the shape of hysteresis loops and domain structure of the sample surface above all in the as-quenched state.
Permanent Link: http://hdl.handle.net/11104/0225523