Open AccessA comparative analysis of magnetic properties and microstructure of high coercivity Sm(CoCuFe)5 quasi-binary alloys in the framework of fractal geometry
Author(s) -
Е. М. Семенова,
M. B. Lyakhova,
Yu. V. Kuznetsova,
D. Karpenkov,
А. И. Иванова,
A. Yu. Karpenkov,
Д. В. Иванов,
Александр Сергеевич Антонов,
N.Yu. Sdobnyakov
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1658/1/012050
Subject(s) - coercivity , microstructure , materials science , alloy , fractal dimension , condensed matter physics , scanning electron microscope , fractal , remanence , geometry , metallurgy , magnetization , composite material , magnetic field , physics , mathematics , mathematical analysis , quantum mechanics
The results of the micro- and nanostructures investigation of Sm(CoCuFe) 5 alloys by means of scanning electron and atomic force microscopy are presented. It was shown that sequential high- and low-temperature heat treatments lead to the formation of a homogeneous microstructure with nanoscale compositional heterogeneities. Such a structure provides a coercive filed of up to 32 kOe. The coercivity and remanent magnetization of the samples in the temperature range from 300 to 700 K linearly decrease. The predominant coercivity mechanism in these materials is pinning on nanoscale inhomogeneities with an increased copper concentration. The fractal dimension of the surface of the Sm(CoCuFe) 5 alloy metallographic specimen was determined at different stages of heat treatments. The comparative analysis of magnetic properties and microstructure in the framework of fractal geometry was carried out.