Department of Physics, T.D. Post Graduate College Jaun-UP India
Email:-ant_tdc@yahoo.com
A heavy rare-earth zirconate R2Zr2O7 compound (where R = Y & Gd) was prepared by solid state reaction at 1300K for 50h. The prepared compound has been characterized by X-ray diffraction (XRD), differential thermal analysis (DTA), thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG). The XRD Studies indicates the formation of single phase orthorhombic structure at room temperature. The electrical conductivity of R2Zr2O7compound were measured in the temperature range 300-1125 K at an internal frequency of 1 kHz. The logs vs. 103/T plot yield the different slopes separated by break temperature (T1). The activation energy below and above this break temperature have been estimated as approximately 0.10eV and 3eV respectively. Hence the electrical conduction below T1 is essentially extrinsic always associated with impurities, defects and interstitials and conduction above T1 is essentially intrinsic due to the change in conduction mechanism.
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Priyanka Rani, A.N. Thakur and Pooja Raghuvanshi , "Investigation of structural and electrical properties of heavy rare-earth zirconate compounds", Journal of Ultra Scientist of Physical Sciences, Volume 23, Issue 2, Page Number 267-274, 2016Copy the following to cite this URL:
Priyanka Rani, A.N. Thakur and Pooja Raghuvanshi , "Investigation of structural and electrical properties of heavy rare-earth zirconate compounds", Journal of Ultra Scientist of Physical Sciences, Volume 23, Issue 2, Page Number 267-274, 2016Available from: http://ultraphysicalsciences.org/paper/612/