Dielectric Anomaly in the Region IV of Rochelle Salt - Ammonium Rochelle Salt Mixed Crystals
- Resource Type
- Article
- Authors
- Toshio Kikuta; Noriyuki Nakatani; Ryosuke Kawabe; Toshinari Yamazaki
- Source
- Journal of the Korean Physical Society, 42(IV), pp.1275-1278 Apr, 2003
- Subject
- 물리학
- Language
- ISSN
- 1976-8524
0374-4884
Temperature dependence of the dielectric constant along the a axis has been measured at various concentrations in the regions III and IV of mixed crystals of Rochelle salt and ammonium Rochelle salt. In the region IV, the dielectric anomaly along the a axis grows to be remarkable with the concentration of Rochelle salt, while the polar axis is still b. The free energy function which has two types of the transition parameters is constructed to consider the thermodynamic treatment in the region IV. The dielectric anomaly along the a axis in the region IV is successfully expressed by the free energy function.HC