The compositional dependence of the lattice parameters for the compounds. Inset: The compositional dependence of the unit-cell volume for the compounds.
The powder x-ray diffraction pattern of obtained with an unoriented powder, bottom, and with a powder oriented in an applied magnetic field of perpendicular to the plane of the sample. The arrows indicate the presence of the Bragg reflections.
The compositional dependence of the Curie temperature and compensation temperature for the compounds.
The isothermal magnetization of the compounds measured at (a) and (b).
The temperature dependence of the dc magnetic susceptibility of , red , and , blue circles, measured in a magnetic field of .
The Mössbauer spectra of the compounds with , 1.5, and 2 obtained at (a) and (b).
The compositional dependence of the and site hyperfine fields (a), isomer shifts (b), quadrupole splittings (c), and relative areas (d) obtained from the Mössbauer spectra of the compounds. The and sites correspond to the red squares and blue circles, respectively. The open and solid symbols refer to the 295 and data, respectively. The error bars on the hyperfine fields are smaller than the size of the data points. This is also the case for some of the error bars on the isomer shifts. The black symbols represent the relative areas obtained from the iron occupancies of the and sites obtained from powder neutron diffraction studies of the compounds.
The lattice parameters, unit-cell volumes, and ratios for the compounds.
The saturation magnetizations . Curie temperatures , and compensation temperatures for the compounds.
The Mössbauer spectral parameters of the compounds. The parameters are defined in the text and given with statistical error limits if they have been refined.
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