- Tytuł:
- Dielectric Properties of Triglycine Sulphate Crystals Admixtured With D- and DL-Phenylalanine
- Autorzy:
-
Stankowska, J.
Peter, E.
Trybula, M. - Powiązania:
- https://bibliotekanauki.pl/articles/2014028.pdf
- Data publikacji:
- 2000-06
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
- 77.22.-d
- Opis:
- The paper reports studies on the effect of D-phenylalanine and DL-phenylalanine admixtures on dielectric properties and domain structure of triglycine sulphate crystals. Permittivity ε and loss tangent tgδ were measured in a wide range of temperatures (10-340 K) as a function of measuring field varied from 1 to 10000 kHz, for samples cut out from two growth pyramids (001) and (110) from triglycine sulphate crystals containing different concentrations of admixtures. A comparison of the effects of D-phenylalanine and DL-phenylalanine admixtures on dielectric properties of triglycine sulphate crystals was made. With increasing concentrations of admixtures in the crystals, the values of ε$\text{}_{max}$ decreased while E$\text{}_{c}$ and E$\text{}_{b}$ (bias field) increased, and P$\text{}_{s}$ and T$\text{}_{c}$ showed insignificant changes. Observations of the domain structure of the admixtured crystals by the liquid crystal method proved its refinement and irregularity. Changes in the domain structure of the crystals occurring in the process of spontaneous ageing were analysed.
- Źródło:
-
Acta Physica Polonica A; 2000, 97, 6; 1061-1072
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł