The study of domain structure of submicron grained cobalt and its changes during heating

• Published in: Journal of magnetism and magnetic materials Vol. 110; no. 1; pp. 73 - 79
• Main Authors: Mulyukov, Kh.Ya, Korznikova, G.F., Sagdatkireyeva, M.B., Timofeyev, V.N., Valiev, R.Z.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.04.1992; Elsevier Science
• Subjects: Applied sciences; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Domain effects, magnetization curves, and hysteresis; Exact sciences and technology; Magnetic properties and materials; Metals. Metallurgy; Physics; Grain size; Temperature; Heat treatment; Domain structure; Magnetic anisotropy; Magnetic domain; Experimental study; Domain wall; Cobalt
• ISSN: 0304-8853
• DOI: 10.1016/0304-8853(92)90014-F

The results of an experimental study of the domain structure of cobalt with a submicron-grained structure ( d≈0.1 μm) at room temperature and during heating are given. For comparison the domain structure of coarse-grained ( d = 10 μm) specimens are studied as well. It is established that the decrease of grain size in the structure slightly changes the shape of the domain structure of a striped type. At heating in the temperature range of 470–570 K, an increase of domain width is observed and then near 570 K the change of the domain wall direction by π/2 in the specimen plane occurs. The explanation of observed effects proceeding from the analysis of temperature dependence of cobalt magnetocrystalline anisotropy constants is given.