Magnetic hysteretic properties of submicron grained nickel and their variations upon annealing

• Published in: Journal of magnetism and magnetic materials Vol. 89; no. 1-2; pp. 207 - 213
• Main Authors: Mulyokov, Kh.Ya, Korznikova, G.F., Abdulov, R.Z., Valiev, R.Z.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.09.1990; 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; Annealing; Magnetization; Coercive force; Magnetic hysteresis; Transition metal; Nickel; X ray analysis; Experimental study; Electron microscopy; Microstructure; Dislocation; Grain boundary
• ISSN: 0304-8853
• DOI: 10.1016/0304-8853(90)90728-9

Magnetic hysteretic properties of high purity nickel were studied in a broad range of structural states from a submicron grained state achieved by means of large deformation on the Bridgman anvils to a coarse-grained state obtained after high-temperature annealing. The structure was studied in different states using electron microscopy and X-ray analysis. At the initial state, the coercivity (Hc) of 5.1 kA/m was achieved for nickel. The contribution of intragrain dislocations and grain boundaries to the value of the coercivity was shown. The value of residual magnetization Ir = 0.5 Is obtained for a highly strained state coincides with the theoretically calculated value. Factors causing a sufficiently complicated dependence of Ir on the annealing temperature are specified.