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  • TITLE: Impedance Spectroscopy of Zr Modified Ba5SmZr3V7O30 Ceramic
  • AUTHORS: B. K. Giri, B. B. Mohanty, P. S. Sahoo, R. N. P. Choudhary
  • KEYWORDS: Ceramics, Tungsten Bronze Structure, Solid-State Reaction, X-Ray Diffraction
  • JOURNAL NAME: Open Access Library Journal DOI: 10.4236/oalib.1104639 Jun 08, 2018
  • ABSTRACT: Ba5SmZr3V7O30 is a new tungsten bronze structured ceramic compound prepared by substituting Zr at Ti site in Ba5GdTi3V7O30 following high-temperature solid-state reaction route. The X-ray diffraction analysis of the compound confirms the formation of single-phase orthorhombic structures at room temperature. Surface morphology of the compound was studied by scanning electron microscopy. Using a Hioki LCR meter, the effects of temperature (32℃ - 500℃) and frequency (102 - 106 Hz) on structural and electrical properties were studied. Detailed analysis of impedance parameters furnishes a better conception of the electrical properties and type of relaxation processes in the material. The plateau region of the Z’~ frequency plot also indicates the presence of relaxation process in the material. The bulk resistance is observed to be decreased with rise in temperature showing a typical negative temperature coefficient of resistance (NTCR) behavior.