[Zurück]

J.C. Tellez Blanco, R. Grössinger, M. Müller, M. Küpferling, G. Wiesinger, J.F. Wang, C.B. Ponton, I.R. Harris:
"Magnetic properties of Sm-substituted M-type ferrites";
in: "Proc.17^th int.Workshop on Rare Earth Magnets", Rinton Press, Newark, Delaware, USA, 2002, S. 192 - 199.

17th International workshop on rare earth magnets

MAGNETIC PROPERTIES OF Sm-SUBSTITUTED M-TYPE FERRITES

J.C. Tellez Blanco(1), R. Grössinger(1), M. Müller(1), M.Küpferling(1),
G.Wiesinger(1), J.F.Wang(2), C.B. Ponton(2) , I.R.Harris(2)

(1) Institute for Solid State Physics, Vienna University of Technology, Austria
(2) School of Metallurgy and Materials, The University of Birmingham, Edgbaston, Birmingham UK


M-type ferrites of the composition Sr-xSmxFe12-xO19 were produced by hydrothermal synthesis. The anisotropy and the coercivity increase slightly with Sm substitution (up to x = 0.25). The temperature dependence of HA looks very similar to that of the unsubstituted material. The Mossbauer parameters like the hyperfine field and the
quadrupolsplitting stay constant with Sm substitution Also, the magnetization at room temperature is not affected by the replacement of Sr by Sm.