Magnetic Properties and Electrical Resistivity of Zr4+ Substituted Li-Zn Ferrite

Abstract

The effect of Zr-substitution on the physical and magnetic properties of Li 0.3+0.5x Zn 0.4 Zr x Fe 2.3-1.5x O 4 ferrites (x=0.0, 0.01, 0.02, 0.03 and 0.05), prepared by the standard ceramic method, has been studied. It is found that the saturation magnetization increases up to x=0.02 and then it decreases. On the other hand, the initial permeability increased while the Curie temperature remained almost constant with increasing x. The behavior of coercivity and remanence ratio was discussed. The composition dependence of the dc electrical resistivity is found to support the hopping conduction mechanism.

Magnetic and Mössbauer studies of Ni substituted Li–Zn ferrite

“…However, a decreasing trend is observed. Similar observation has been reported by other workers [13]. This shows that the lattice parameter does not solely depend on ionic radii.…”

Direct and facile synthesis of Li–Sr–Zn ferrites via low temperature solution combustion route

“…In the present series of ferrite samples Zn 2 þ (0.074 nm) ions substitute Sr 2 þ (0.12 nm) ions, and the lattice parameter is expected to decrease. However, the observed increase, contrary to expectation may be attributed to the fact that contribution to the lattice parameter in certain cases of substitution does not solely depend on ionic radii but also on force of interaction which results from the equilibrium between long rage attractive coulomb forces and short range repulsive interactions between the ions [20][21][22][23]. Experimental density is lower than the X-ray density which is due to the porosity of the materials.…”

Physical, electrical and magnetic properties of nanocrystalline Zr–Ni doped Mn-ferrite synthesized by the co-precipitation method

“…These crystallite sizes are small enough to obtain the suitable signal-tonoise ratio in the high density recording media. The lattice constant (a), cell volume (V) and X-ray density are calculated by following formulae [27,28]: where 'Z' is the number of formula units in a unit cell, 'M' the molecular weight of the sample and 'N A ' is the Avogadro's number. The value of lattice constant, cell volume and X-ray density are found to increase with increase in Zr-Ni content ( Table 1).…”