Hydrostatic pressure effect on the dielectric constant εc or K2SeO4 was studied. The incommensurate transition temperature T2 lowers linearly with the slope of –7.3±0.2 K/kbar. The Curie temperature T3 also decreases with pressure, but the slope denpends on pressure; the initial slope is –17.2±2.5 K/kbar and the slope above 0.6 kbar is –11.4±1.0 K/kbar. The dielectric behaviors under the pressure are qualitatively discussed based on the theoretical treatments already developed by other authors, and some problems are suggested.
ASJC Scopus subject areas
- Physics and Astronomy(all)