PARAMAGNETIC PROPERTIES OF Cox(Cu0.5Ga0.5)1–xCr2S4 SOLID SOLUTIONS
The magnetic properties of Cox(Cu0.5Ga0.5)1–xCr2S4 solid solutions were measured at 5-300 K in constant magnetic fields of 0.1 and 45 kOe. Key magnetostatic properties of the analysed samples were determined. These properties include: saturation magnetization, spin and effective magnetic moments, the Curie temperature, the Néel temperature, the spin freezing temperature, the Curie constant, and the Curie–Weiss constant. A corresponding magnetic diagram was made to enhance the analysis of the obtained data. The diagram demonstrates phase transitions occurring within the Cox(Cu0.5Ga0.5)1–xCr2S4 system and their temperature intervals. The diagram provides an overview of the magnetic transitions, enabling us to use this data for the discussion of the results and explain the properties being studied.
The reported study was supported by the Russian Foundation for Basic Research (project No. 15-03-03094).
A part of this study also received financing within the framework of the state order No. 0088-2014-0003 to Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences in the sphere of basic research.
The authors express their gratitude to N.N.Efimov for his assistance with the magnetic measurements.
2. Belov K. P., Tretyakov Yu. D., Gordeev I. V., Koroleva L. I., Kesler Ya. A. Magnetic Semiconductors-Chalcogenide Spinels. Moscow State University Publ., 1981, 279 p. (in Russian)
3. Wilkinson C., Knapp B. M., and. Forsyth J. B. J. Phys., C: Solid State Phys., 1976, vol. 9, № 21, р. 4021. http://iopscience.iop.org/0022-3719/9/21/021
4. Aminov T. G., Shabunina G. G., Busheva E. V., Novotortsev V. M. Inorganic Materials, 2016, vol. 52, no. 8, с. 770-782. DOI: 10.1134/S002016851608001X
5. Letyuk L. M., Kostishin V. K., Gonchar A. V. TechnologyofFerriteMaterialsofMagnetoelectronics. Moscow: MISIS Publ., 2005, 351 p. (in Russian)