Structural, thermal and conductive properties of Bi4−xMxV2O11 (M = La, Gd; 0 x 0.4) compounds |
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Authors: | Deepti Ravikant ML Singla K Singh |
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Institution: | aSchool of Physics and Materials Science, Thapar University Patiala, Punjab 147001, India;bCentral Scientific Instruments Organization, Chandigarh 160030, India |
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Abstract: | Bi4−xMxV2O11 (M = La, Gd) was prepared by solid state reactions. The amount of La and Gd in the (Bi4−xMxV2O11) was varied in the range of (0 x 0.4). The addition of La and Gd to Bi4V2O11 electrolyte was found to stabilize the β crystalline phase for x 0.3. In addition, the phase transition corresponding β- to γ-phases are evident in the ionic conductivity plots as well as in XRD, DSC profiles of x 0.3 samples. The highest ionic conductivity was observed in Bi3.9La0.1V2O11 and Bi3.8Gd0.2V2O11 samples in the range of 10−3–10−4 S/cm for 700–500 °C. These results were supported by impedance spectroscopy, X-ray diffraction (XRD) and differential scanning calorimetry (DSC). |
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Keywords: | Bismuth vanadate Solid oxide fuel cell Electrolyte |
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