Magnetic Properties of Divalent (Ni,Sn,Zn)- Tetravalent (Ru,Sn) Ionic Mixtures of Substituted Ba Ferrite |
| J. Slámaa, A. Gruskováa, A. González Angelesb, M. Šokaa, R. Dosoudila
aFaculty of Electrical Engineering and Information Technology, Slovak University of Technology, Ilkovičova 3, 812 19 Bratislava, Slovakia bFacultad de Ingeniería, Universidad Autónoma de Baja California, C.P. 21900 Mexicali, B.C., México |
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| The drop of coercivity, while preserving the saturation magnetic polarisation JS of substituted M-type Ba hexaferrites with composition BaFe12-2x(Me1Me2)xO19, was studied. Divalent Me1=Ni, Zn, Sn and tetravalent Me2=Ru, Sn ionic combinations were used in various compounds. Mössbauer spectroscopy was used to reveal sites of replacement of the Fe3+ ions by Ru4+ and Sn4+. The Ni2+, Zn2+ and Sn2+ occupation sites were identified as well. Strong drop of coercivity difference ΔHc(x) near x=0.1 and slight decrease of ΔHc(x) close to x=0.3 was obtained for suitable coupling of Me12+and Me24+ ions. |
DOI: 10.12693/APhysPolA.126.172 PACS numbers: 75.50.Gg, 75.50.Vv, 77.22.Ej |