Influence of applied tensile stress on the hysteresis curve and magnetic domain structure of grain-oriented Fe–3%Si steel

0430380 - FZÚ 2015 RIV GB eng J - Journal Article
Perevertov, Oleksiy - Schäfer, R.
Influence of applied tensile stress on the hysteresis curve and magnetic domain structure of grain-oriented Fe–3%Si steel.
Journal of Physics D-Applied Physics. Roč. 47, č. 18 (2014), s. 1-10. ISSN 0022-3727. E-ISSN 1361-6463
R&D Projects: GA ČR(CZ) GAP107/11/0391
Grant - others:AVČR(CZ) M100100906
Institutional support: RVO:68378271
Keywords : magnetic domains * magnetization process * magnetoelasticity * hysteresis loops * tension * silicon steel * Kerr microscopy
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 2.721, year: 2014

The influence of applied tensile stress on the hysteresis curve and domain structure in conventional (1 1 0)[0 0 1] Fe–3%Si steel, cut parallel to the rolling direction, is studied on samples with different grain sizes. Quasistatic hysteresis loops under tensile stresses up to 70MPa were measured. The magnetic domains and magnetization processes were observed by longitudinal Kerr microscopy at different levels of stress. It is shown that for stresses exceeding 5–10MPa the bulk hysteresis loop can be described with good accuracy by the action of an effective field, which is the product of a function of stress and a function of magnetization. The function of stress is approximately linear with a slope of one. Except for the sample with the smallest grains, the function of magnetization is linear in the magnetization range ±1.2–1.5 T, i.e. it has a typical demagnetizing field shape.
Permanent Link: http://hdl.handle.net/11104/0235321