Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Mechanism of Ni-Zn ferrite formation in the presence of molten Li/sub 2/SO/sub 4/-Na/sub 2/SO/sub 4/

Journal Article · · J. Am. Ceram. Soc.; (United States)
Nickel-zinc ferrite powder was prepared from the constituent oxides in the presence of molten Li/sub 2/SO/sub 4/-Na/sub 2/SO/sub 4/. The effect of ZnO on the reactivity of NiO was studied. The process of Ni-Zn ferrite formation was followed by X-ray diffraction and thermomagnetic analyses. Particle size and shape of the product were determined by scanning electron microscopy. In the presence of molten salt, ZnO enhances the reactivity of NiO, and Ni-Zn ferrite formation is completed at lower temperature than Ni ferrite formation. In the reaction for the formation of NiZn ferrite, Zn ferrite forms before NiO is incorporated into the ferrite phase. The reaction between the initially formed Zn ferrite and NiO leads to a rate of Ni-Zn ferrite formation higher than that of Ni ferrite formation from NiO and Fe/sub 2/O/sub 3/.
Research Organization:
Keio Univ., 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223
OSTI ID:
5634164
Journal Information:
J. Am. Ceram. Soc.; (United States), Journal Name: J. Am. Ceram. Soc.; (United States) Vol. 69:4; ISSN JACTA
Country of Publication:
United States
Language:
English