Affiliation:
1. Miheev Institute of Metal Physic, Ural Branch, Russian Academy of Sciences
2. Ural Federal University Named after the First President of Russia B.N. Yeltsin
Abstract
Abstract—The concentration dependence of the magnetic properties of iron–germanium alloys before and after thermomagnetic treatment, which represents an annealing of alloy samples in the ferromagnetic state in a permanent or alternating magnetic field (magnetic field annealing – MFA), has been investigated. It is shown that before MFA, with an increase in the germanium content in the range of 3–30 at % Ge, the coercive force increases and the residual induction decreases. As a result of thermomagnetic treatment, in the alloy samples magnetic anisotropy is induced: the magnetic hysteresis loops become narrower, the residual induction increases, and the coercive force decreases. Thermomagnetic treatment is effective for Fe–Ge alloys with a germanium content from 6 to 18 at %, and its highest efficiency is observed at 12 at % Ge. Features of the structural state of iron–germanium alloys and their role in the formation of magnetic properties during annealing in a magnetic field are discussed.
Publisher
The Russian Academy of Sciences
Reference29 articles.
1. Дружинин В.В. Магнитные свойства электротехнической стали. М.: Энергия, 1974. 240 с.
2. Зайкова В.А. Старцева И.Е., Филиппов Б.Н. Доменная структура и магнитные свойства электротехнических сталей. М.: Наука, 1992. 272 с.
3. Freitas A.S., de Albuquerque D.F., Fittipaldi I.P., Moreno N.O. Magnetic properties of Fe–Al for quenched diluted spin-1 Ising model // JMMM. 2014. V. 362. P. 226.
4. Wu D., Xing Q., McCallum R.W., Lograsso T.A. Magnetostriction of iron-germanium single crystals // J. Appl. Phys. 2008. V. 103. P. 07B307.
5. Clark A.E., Hathaway K.B., Wun-Fogle M., Restorff J.B., Lograsso T.A., Keppens V.M., Petculescu G., Taylor R.A. Extraordinary Magnetoelasticity and Lattice Softening in bcc Fe–Ga Alloys // J. Appl. Phys. 2003. V. 93. P. 8621–8623.