The preparation of La_(0.9)Na_(0.1)CrO_(3)(LNCO),Ni_(0.5)Cu_(0.5)Fe_(2)O_(4)(NCFO)and their composites of the type e1xT La_(0.9)Na_(0.1)CrO_(3)(LNCO)t(x)Ni_(0.5)Cu_(0.5)Fe_(2)O_(4)(NCFO)ex?0.25,0.50T through solid st...The preparation of La_(0.9)Na_(0.1)CrO_(3)(LNCO),Ni_(0.5)Cu_(0.5)Fe_(2)O_(4)(NCFO)and their composites of the type e1xT La_(0.9)Na_(0.1)CrO_(3)(LNCO)t(x)Ni_(0.5)Cu_(0.5)Fe_(2)O_(4)(NCFO)ex?0.25,0.50T through solid state route is reported.From X-ray diffraction data analysis,the parent La_(0.9)Na_(0.1)CrO_(3)was found to crystallize in orthorhombic structure(Pnma)while Ni_(0.5)Cu_(0.5)Fe_(2)O_(4)has crystallized into the cubic structure(Fd3m)further verified via Retvield refinement.The morphology and compositional studies were carried out using field emission scanning electron microscopy(FESEM)and energy dispersive analysis of X-rays(EDAX),respectively.Lattice structure was confirmed via Raman characterization for the prepared samples.The sample formation was further verified through Fourier transform Infra-Red(FTIR)spectroscopy.The dielectric studies reveal the La_(0.9)Na_(0.1)CrO_(3)e13*10^(4)T and Ni_(0.5)Cu_(0.5)Fe_(2)O_(4)e1.83*10^(4)T exhibit high dielectric constant.However,their composites show abrupt drop in dielectric constant.The electric modulus study confirmed that the samples exhibit non-Debye character with spread of relaxation time constants.展开更多
文摘The preparation of La_(0.9)Na_(0.1)CrO_(3)(LNCO),Ni_(0.5)Cu_(0.5)Fe_(2)O_(4)(NCFO)and their composites of the type e1xT La_(0.9)Na_(0.1)CrO_(3)(LNCO)t(x)Ni_(0.5)Cu_(0.5)Fe_(2)O_(4)(NCFO)ex?0.25,0.50T through solid state route is reported.From X-ray diffraction data analysis,the parent La_(0.9)Na_(0.1)CrO_(3)was found to crystallize in orthorhombic structure(Pnma)while Ni_(0.5)Cu_(0.5)Fe_(2)O_(4)has crystallized into the cubic structure(Fd3m)further verified via Retvield refinement.The morphology and compositional studies were carried out using field emission scanning electron microscopy(FESEM)and energy dispersive analysis of X-rays(EDAX),respectively.Lattice structure was confirmed via Raman characterization for the prepared samples.The sample formation was further verified through Fourier transform Infra-Red(FTIR)spectroscopy.The dielectric studies reveal the La_(0.9)Na_(0.1)CrO_(3)e13*10^(4)T and Ni_(0.5)Cu_(0.5)Fe_(2)O_(4)e1.83*10^(4)T exhibit high dielectric constant.However,their composites show abrupt drop in dielectric constant.The electric modulus study confirmed that the samples exhibit non-Debye character with spread of relaxation time constants.
