New information on Mossbauer and phase transition properties of Z-type hexaferrites

In this paper various cation substituted Z-hexaferrites, prepared by the us ual ceramic procedure and firing at a relatively low temperature (980 degre esC) in a 2 atm. oxygen pressure are discussed. On these materials extensiv e studies were undertaken, X-ray diffraction, IR absorption, scanning elect ronmicroscopy and a Mossbauer spectroscopy. Data obtained are explained, an d discussed in details, leading to new information about the interaction of variant doped cation with the Z-hexaferrite Fe sites.