Spin Reorientation in Substituted Barium Ferrite

Spin Reorientation in Substituted Barium Ferrite

The structural transformation of substituted hexagonal ferrite powders BaFetoCoTiO~s prepared by mechanical milling, was investigated as a fimction of grinding time by means of MOssbauer spectrometry and static magnetic measurements. A spin reorientation is clearly evidenced from the temperature dependence of the hyperfine parameters and of the initial magnetic permeability on the powder mechan...

SPIN REORIENTATION PHENOMENA IN SUBSTITUTED Pr2 (Co, Fe)17 INTERMETALLICS

The magnetic anisotropy phase diagrams of Pr2Co17-,Fen and Pr2Co17-,Fez-,Ty (T=Mn, Zr, Ti, Hf) compounds have been determined. Two spin reorientation temperatures, TSr1 and Tsr2, have been observed. Near the Ts,l or Ts,2 boundary the anisotropy is conical; between the two spin reorientation temperatures they exhibit uniaxial anisotropy and beyond these limits they are planar. Introduction --0-y...

Mössbauer spectra of CoZn-substituted Z-type barium ferrite Ba3Co2−xZnxFe24O41

Mössbauer spectra of powder and aligned Ba3Co2−xZnxFe24O41 samples with x=0–2.0 have been obtained and analyzed at room temperature and at T=7 K with applied magnetic fields of 0 and 60 kOe. The relationship between Mössbauer parameters and magnetic properties has been studied. The magnetocrystalline anisotropy of Ba3Co2−xZnxFe24O41 is modified from the c plane to the c axis at Zn concentration...

M-Type Barium Hexagonal Ferrite Films

R-Ferrite-type barium cobalt stannate, BaCo2Sn4O11

BaCo(2)Sn(4)O(11) is isotypic with R-ferrite, BaTi(2)Fe(4)O(11). The Co atoms fully occupy trigonal-bipyramidal sites () and are disordered with Sn atoms in octa-hedral sites (.2/m symmetry), as represented in the formula BaCoSn(2)(Co(0.34)Sn(0.66))(4)O(11). Ba atoms are situated in a 12-fold coordinated site ( symmetry).