Effect of Copper Oxide on the Structure of Nano-Sized Ni x Zn y Fe2O4 Powders Prepared by Using Self-Propagating High Temperature Synthesis
Nano-sized Cu x Ni x Zn1−x−y Fe2O4 ferrites were prepared by using self-propagating high-temperature synthesis (SHS) and mechanical ball milling. As oxygen pressure increases and copper content decreases in the initial composition, average combustion temperature and combustion velocity increases in the ranges of 947 to 1150 °C and 4.2 to 6.5 mm/sec, respectively. The SHS products were agglomerated crystalline powders in which fine particles were present. The average particle of the pulverized SHS product was about 200 nm. Lattice parameters determined by neutron diffractometry are 8.4125 Å for Ni0.38Zn0.62Fe2O4 and a = 8.3540 Å for Cu0.29Ni0.28Zn0.43Fe2O4.
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Document Type: Research Article
Publication date: 2011-01-01
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