Nanocrystalline strontium (Sr) doped Lanthanum Chromium oxide (LaCrO3) were prepared by sol-gel techniques. The influence of different concentrations of Sr doped nanocrystalline La1-xSrxCrO3 (x= 0,0.1,0.2,0.3) and calcinations temperature were investigated on the structure, morphology, and crystallite size by X-ray diffraction (XRD).The X-ray diffraction studies of LaCrO3. Powder have shown that the as prepared powder was single phase, crystalline and has a cubic perovskite structure. The particle size calculated from FWHM was 50nm. . The electrical properties for all the samples have been studied as a function of frequency in the range 42Hz-50MHz and temperature ranging 30-7000c. The appearance of peak in imaginary part of impedance (Z’’) for each concentration and shifting of this peak with temperature towards higher frequency side indicated that the presence of electric relaxation.
Structural and electrical properties of sr- substituted perovskites nano crystalline lacro3
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