Tricriticality in Co-doped BaTi
- 1 June 1981
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 23 (11) , 5866-5870
- https://doi.org/10.1103/physrevb.23.5866
Abstract
In measurements of the tetragonal distortion of single crystals of BaTi doped with cobalt (Co), we found that for about 2.5 at.% Co the ferroelectric-paraelectric transition is a tricritical point. We relate this tricritical point to the phase-diagram topology. It is likely that the coupling of the polarization with the electrons is responsible for the appearance of this tricritical point.
Keywords
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