Synthesisation, electrical and magnetic properties of Al doped nano ferrite particles Online publication date: Wed, 30-Sep-2009
by Khalid Mujasam Batoo, Alimuddin, Shalendra Kumar
International Journal of Nanoparticles (IJNP), Vol. 2, No. 1/2/3/4/5/6, 2009
Abstract: Single phase cubic spinel nanocrytalline particles of Al doped Ni0.2Cd0.3Fe2.5O4 has been synthesised by sol-gel method with an average crystallite size of ∼5 nm. The dielectric constant (ε′) and ac conductivity (σac) shows normal behaviour with frequency. The dielectric properties and ac conductivity in the samples have been explained in the light of Koops phenomenological theory. The impedance analysis shows that grain boundary volume increases with Al doping. ac susceptibility measurements show that the blocking temperature decreases with the Al doping. The variation of blocking temperature in the real and imaginary part of ac susceptibility shows the existence of non-linear phase.
Online publication date: Wed, 30-Sep-2009
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