Refine
Has Fulltext
- no (51)
Year of publication
Document Type
- Article (51)
Language
- English (51) (remove)
Is part of the Bibliography
- yes (51)
Keywords
Institute
By means of pyroelectrical measurements and dielectric spectroscopy as well as structural information from differential scanning calorimetry, it is shown that, in a poly(vinyl alcohol) with azobenzene-alkoxy side chains, pyroelctricity and dielectric hysteresis which are usually related to each other have different origins. The pyroelectric effect is explained with reversible dipole-density changes upon thermal expansion, whereas the dielectric hysteresis is proposed to result from a charge-carrier polarisation.