XRD and Mössbauer studies of crystallographic and magnetic transformations in synthesized Zn-substituted Cu-Ga-Fe compound

System of samples in the form of Cu_1−xZn_xFe_2−yGa_yO₄ with (0.0?x?1.0, y=0.0 and 1.0) is synthesized. X-ray diffraction study confirms the presence of a single-phase structure, where tetragonal unit cell is obtained for samples CuFe₂O₄ and CuGaFeO₄ with c/a>1. At compositional parameter x?0.25, tetragonal-to-cubic transformation occurs. The determined lattice parameter a for the cubic samples is found to decrease with increasing Zn content x. ⁵⁷Fe Mössbauer measurements at 293, 77 and 12 K show characteristic spectra of paramagnetic, magnetic, and electronic types for the different compositions. Cation distribution obtained from the spectral analysis at 12 K revealed transformation from the ferrimagnetic inverse spinel of CuFe₂O₄ to the antiferromagnetic normal spinel of ZnFe₂O₄. Hyperfine parameters are found to be strongly dependent on temperature and concentration parameter x. Low-temperature measurements are carried out using installed and well-calibrated closed-cycle variable temperature cryostat Model REF-399-D22. Low vibration is obtained through bellows, spacer, and exchange gas isolation and a difference of 0.018 mm s⁻¹ between the FWHM of a pure iron foil at room temperature and 12 K is achieved.