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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
Jun 08, 2018
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.