title: Soft magnetic properties of nanocrystalline Fe73B7Si16Nb3Cu1 alloy after rapid heating under tensile stress.
abstract: Amorphous Fe73B7Si16Nb3Cu1 ribbon was crystallized rapidly by electric current heating under simultaneously applied tensile stress along the ribbon axis. As a result, strong transverse magnetic anisotropy was induced in the ribbon. Dynamic magnetic properties of the ribbons rapidly heated either under the tensile stress or without tensile stress were measured using toroidal cores. Optimal electric current heating regime that provides maximum improvement of the initial magnetic permeability and core loss was determined. Tensile stress increase from 0 to 180 MPa was shown to result in the decrease of the initial magnetic permeability down to 400 and core loss at frequencies from 0.4 to 200 kHz. Comparative analysis of magnetic properties of the cut core (with non-magnetic gap) and the cores heated under tensile stress was carried out. The magnetic properties of the latter cores are advantageous for manufacturing the reactors and linear chokes of switch-mode power supplies.
authors: G.V. Kurdyumov Institute for Metal Physics of National Academy of Sciences of Ukraine, 36, Academician Vernadsky Boulevard, Kyiv, 03142 Ukraine.
authors: Anton
authors: A
authors: Nosenko
authors: G.V. Kurdyumov Institute for Metal Physics of National Academy of Sciences of Ukraine, 36, Academician Vernadsky Boulevard, Kyiv, 03142 Ukraine.
authors: Taras
authors: T
authors: Mika
authors: G.V. Kurdyumov Institute for Metal Physics of National Academy of Sciences of Ukraine, 36, Academician Vernadsky Boulevard, Kyiv, 03142 Ukraine.
authors: Olexandr
authors: O
authors: Rudenko
authors: Department of Physics, Taras Shevchenko National University of Kyiv, 64 Volodymyrska Str., Kyiv, 01601 Ukraine.
authors: Yevhenii
authors: Y
authors: Yarmoshchuk
authors: G.V. Kurdyumov Institute for Metal Physics of National Academy of Sciences of Ukraine, 36, Academician Vernadsky Boulevard, Kyiv, 03142 Ukraine.
authors: Viktor
authors: V
authors: Nosenko
keywords: Amorphous and nanocrystalline Fe-based alloys; Core loss; Magnetic anisotropy; Magnetic permeability; Rapid heating by electric current; Tensile stress