Peculiarities of texture formation in strontium hexaferrite-based materials when produced from organic nitrate precursors
A.A. Ostroushko1, M.O. Tonkushina1, T.Yu. Zhulanova1,2, E.V. Kudyukov1, A.Ya. Golub1, O.V. Russkikh1
1 Ural Federal University named after the first President of Russia B.N. Yeltsin
2 Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences
DOI: 10.26456/pcascnn/2023.15.1017
Original article
Abstract: The processes of strontium hexaferrite (permanent magnet material) fabrication in combustion reactions followed by heat treatment of organic nitrate precursors containing glycine or polyvinyl alcohol have been studied. The formation of iron-glycine complexes of organic precursor components affects the formation of the morphology of the obtained samples. When using glycinecontaining systems during combustion, a branched fibrous texture of the material with extended internal cavities with elongated oxide particles emerges. Such samples have a higher coercivity; the external magnetic field has no significant influence on the texture formation during combustion. It was established that charges are generated in precursors during their combustion, which manifests itself in the appearance of a potential difference between the ground and the precursor. In this case, the appearance of lower intensity charges allows us to obtain samples with higher magnetization, as well as with a greater ability to increase the magnetic characteristics during further thermomagnetic processing.
Keywords: strontium hexaferrite, synthesis, organic nitrate precursors, magnetic properties, texturing
- Aleksander A. Ostroushko – Dr. Sc., Professor, Chief Researcher and Head of Department of Chemical Materials Science in Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B.N. Yeltsin
- Margarita O. Tonkushina – Ph. D., Senior Researcher, Department of Chemical Materials Science in Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B.N. Yeltsin
- Tatiana Yu. Zhulanova – Research Laboratory Assistant, Department of Chemical Materials Science in Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B.N. Yeltsin, 2nd year postgraduate student Institute of High Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences
- Egor V. Kudyukov – Ph. D., Researcher, Department of Magnetism of Solids in Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B.N. Yeltsin
- Alexey Ya. Golub – Assistant, Department of Analytical Chemistry and Environmental Chemistry in Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B.N. Yeltsin
- Olga V. Russkikh – Ph. D., Senior Researcher, Department of Chemical Materials Science in Institute of Natural Sciences and Mathematics, Ural Federal University named after the first President of Russia B.N. Yeltsin
Reference:
Ostroushko, A.A. Peculiarities of texture formation in strontium hexaferrite-based materials when produced from organic nitrate precursors / A.A. Ostroushko, M.O. Tonkushina, T.Yu. Zhulanova, E.V. Kudyukov, A.Ya. Golub, O.V. Russkikh // Physical and chemical aspects of the study of clusters, nanostructures and nanomaterials. — 2023. — I. 15. — P. 1017-1028. DOI: 10.26456/pcascnn/2023.15.1017. (In Russian).
Full article (in Russian): download PDF file
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