Effect of annealing temperature on Magnetic Properties of Nanocrystalline CuFe1.9La0.1O4

Effect of annealing temperature on Magnetic Properties of Nanocrystalline CuFe_1.9La_0.1O₄

Swaati Saandhya¹, ManishiPuja¹ and Dolly Sinha¹

¹Department of Physics, Magadh Mahila College, Patna 800001, India.

ABSTRACT Nanocrystalline CuFe_1.9La_0.1O₄ powder was prepared by the citrate precursor method. The magnetic properties of the sample were measured by using a vibration sample magnetometer (VSM), which showed that the sample exhibited typical ferrimagnetic behaviour at room temperature. The lattice constants decrease with the increase in annealing temperature. The crystallite size decreases with the increase in the annealing temperature. The value of M_s is found to be maximum for the sample annealed at 550 ^oC and other two samples annealed at 450 and 650 ^oC having the similar less magnetization value because of tetragonal crystal symmetry.

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