Abstract
The microwave ionic conductivity σ of single-crystals of K-Mg priderite ( a hollandite type compound ) K1·6Mg0·8Ti7·2O16 has been measured using a standing wave method at 9.54 and 32.8 GHz from 83 to 616 K. The results of σT−1T characteristic are divided into two regions, one is the part of higher temperatures I and the other is the part of lower temperatures II. As the ionic conductivity at 32.8 GHz at the region I is interpreted by the configurational model proposed by Bayeler et al., the frequency-independent intrinsic ionic conductivity dominated by the configurational model is predicted to be observed at higher frequencies than 32.8 GHz.
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