Structural and optical properties of a revived Pb_(0.5)Ba_(1.5)BiVO_(6) perovskite oxide

查看全文 作　　者：[1]R.K.Parida;[2]D.K.Pattanayak;Bhagyashree [1]Mohanty;Nimai [3]C.Nayak;[4]B.N.Parida 机构地区：[1]Department of Physics,Faculty of Engineering and Technology(ITER)Siksha‘O’Anusandhan Deemed to be University,Bhubaneswar,Odisha,India;[2]Department of Physics,GIET,Gunupur,Rayagada,India;[3]Department of Chemistry,Faculty of Engineering and Technology(ITER)Siksha‘O’Anusandhan Deemed to be University,Bhubaneswar,Odisha,India;[4]Department of Physics,Central Institute of Technology,Kokrajhar BTAD,Assam,783370,India 出　　处：《Journal of Advanced Dielectrics》索引2019年第9卷第1期,共7页 摘　　要：The polycrystalline ceramic Pb0.5Ba1.5BiVO6 manifesting the complex double perovskite structure was tailored by the conventional solid state route at a moderate temperature.Qualitative phase analysis and formation of the ceramic were affirmed by XRD analysis.The X-ray powder diffraction pattern of the compound explored at room temperature affirms the single phase formation with double perovskite structure exhibiting rhombohedral phase.Microstructural analysis of the studied compound procured from the Scanning Electron Microscope(SEM)validates the formation of dense microstructures and nonuniformly distributed grains with minimal voids.Compositional analysis was shaped through the Electron Diffraction Spectroscopy(EDS)confirming the absence of con-tamination of any other metals apart from the mentioned ones.Dielectric(Cr and tanδ)parameters of the compound were studied using the LCR analyzer at different temperatures and wide range of frequencies.The polarization and dielectric study affirms the presence of ferroelectricity in the material with transition temperature much above the room temperature.The tangent dielectric loss of this sample being almost minimal at room temperature attributes it to find applications in different grounds of electronics.Optical equities of the ceramic were further analyzed by the RAMAN,FTIR,UV–Vis and Photoluminescence spectroscopy. 关 键 词：CERAMIC X-Ray diffraction EDS LCR optical properties