Growth, structural and magnetic characterization of Co- and Ni-substituted barium hexaferrite single crystals

• Published in: Journal of alloys and compounds Vol. 628; pp. 480 - 484
• Main Authors: Vinnik, D.A., Zherebtsov, D.A., Mashkovtseva, L.S., Nemrava, S., Semisalova, A.S., Galimov, D.M., Gudkova, S.A., Chumanov, I.V., Isaenko, L.I., Niewa, R.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15-04-2015
• Subjects: Crystal growth; Crystal structure; Magnetization; Permanent magnets; Crystal growth; Permanent magnets; Magnetization; Crystal structure
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2014.12.124

•Growth of large Co-substituted crystals BaFe(12−x)CoxO19 and Ni-substituted crystals BaFe(12−x)NixO19.•Co and Ni content controllable by flux composition.•Magnetic characterization depending on Co and Ni-content.
Large single crystals with sizes of up to 15mm of cobalt and nickel-substituted M-type barium hexaferrite BaFe12−xMxO19 (M=Ni, Co) were obtained from carbonate flux at temperatures as low as 1260°C. The Co and Ni contents in the crystals can be controlled via the content in the flux, but is restricted to about x⩽0.3. An increasing amount of the substitution results in a monotonous reduction of the Curie temperature, the saturation magnetization at room temperature and the coercive force.