Single crystals of lead zinc niobate-lead titanate (1-x)Pb(Zn 1/3 Nb 2/3 )O 3 -xPbTiO 3 for x = 8% and 9% have been grown by flux method using lead oxide (PbO) as flux. Low scan rate XRD has been carried out to investigate on the structural influence of the compositional variations in the grown crystals. Transmission spectra in the range of UV-Vis-Near IR and mid IR regions have been carried out to understand the distortions caused in the BO 6 octahedral lattice. Morphological aspects of as-grown PZN-PT crystals have also been investigated. Dielectric measurements clearly explained the dependence of T c and diffusiveness with PT content. The values of P r and E c obtained from P-E loops suggest the presence of ordered domain state in these PZN-PT single crystals.

The effect of oxygen vacancies on ferromagnetism (FM) in Zn 1Àx Mn x O thin films grown by radio frequency (RF) sputtering has been investigated. The grown films at different oxygen pressures have been characterized by X-ray diffraction (XRD), Hall effect, photoluminescence (PL) and vibrating sample magnetometry (VSM). The observed ferromagnetism/ diamagnetism by the VSM measurement due to the variation of oxygen vacancies has been confirmed by XRD, PL, and Hall results. The vacancy-mediated FM has been explained by the formation of magnetic polarons.

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