论文信息 - Cation distribution and high field magnetization studies on SrFe 12-x Cr x O 19

Cation distribution and high field magnetization studies on SrFe 12-x Cr x O 19

With the aim of a better understanding of both cationic distribution and magnetic properties of the uniaxial SrFe 12-x Cr x O 19 hexagonal ferrites, Mossbauer spectroscopy, neutron diffraction and high field magnetization measurements have been carried out. The Cr3+ions occupy the octahedral sites of the M structure with a preference hierarchy within them. The magnetic measurements, together with the deduced cationic distribution, indicate that some sublattices have a random spin canting around the c-axis.

[1] C. Patton,et al. Localised canting models for substituted magnetic oxides , 1983 .

[2] E. Lucchini,et al. Mössbauer investigation of In and Sc substituted barium hexaferrite , 1981 .

[3] R. Young,et al. A new computer program for Rietveld analysis of X-ray powder diffraction patterns , 1981 .

[4] F. Grandjean,et al. A Mössbauer Study of the Effects of the Substitution of Fe by Cr in SrFe12O19 , 1979 .

[5] Y. Nishihara. Effect of Nearest Neighbor Ions on the Hyperfine Fields at 57Fe Nuclei in TbFe1-xCrxO3 , 1975 .

[6] A. Deriu,et al. Temperature dependence of the sublattice magnetizations in Al- and Ga-substituted M-type hexagonal ferrites , 1974 .

[7] J. S. V. Wieringen,et al. Anisotropic Mössbauer fraction and crystal structure of BaFe 12O19 , 1969 .

[8] J. Goodenough,et al. Suggestion concerning magnetic interactions in spinels , 1959 .

[9] S. Pickart,et al. NEUTRON STUDY OF THE CRYSTAL AND MAGNETIC STRUCTURES OF MnFe$sub 2$-t- CrtO$sub 4$ , 1959 .

[10] E. F. Bertaut,et al. Substitution dans les hexaferrites de l'ion Fe3+ par Al3+ , Ga3+, Cr3+ , 1959 .