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Crystallization studies on AgI-Ag2O-MoO3 superionic system synthesized by melt quenching and mechanical milling |
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| Authors: | Anshuman Dalvi S. Bharadwaj |
| Affiliation: | a Physics Group, Birla Institute of Technology and Science Pilani, Pilani 333031, India b Interuniversity Consortium for DAE Facilities, Indore 452001, India c Department of Physics and Materials Science, Indian Institute of Technology, Kanpur 208016, India |
| Abstract: | Crystallization in the melt-quenched (MQ) and mechanically milled (MM) superionic systems has been thoroughly investigated using differential scanning calorimetry, X-ray diffraction and electrical conductivity measurements. It is observed that the two systems obey different crystallization processes. The conventionally melt-quenched samples exhibit only one crystallization peak near 112 °C, whereas, the mechanochemically synthesized samples show two well-separated crystallization peaks at Tcl∼75-97 °C and Tc2∼132±2 °C. The higher value of electrical conductivity in the mechanochemically synthesized samples (∼10−2 Ω−1 cm−1 at 300 K) than the melt-quenched samples is attributed to the higher value of disorder (entropy) in the former. |
| Keywords: | A. Amorphous materials C. Glasses C. Differential scanning calorimetry Phase transitions |
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