Phase transitions in AgTaO3single crystals
- 1 January 1981
- journal article
- research article
- Published by Taylor & Francis in Phase Transitions
- Vol. 2 (1) , 7-13
- https://doi.org/10.1080/01411598108241306
Abstract
AgTaO3 single crystals have been obtained by the molten salt method; two different solvents, AgCl and V2O5, were used. X-ray investigations have been carried out in the temperature region from 300 K to 800 K. At room temperature AgTaO3 possesses a pseudocubic perovskite-type unit cell with rhombohedral distortion. Two structural phase transitions, to tetragonal at 650 K and to cubic symmetry at 770 K, have been observed. In the tetragonal phase a jump of the lattice constants has been observed at approximately 680 K. DTA and domain structure investigations confirm the presence of these phase transitions.Keywords
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