Pyroelectricity in Highly Stressed Quasi-Amorphous Thin Films (pages 1826–1828)
V. Lyahovitskaya, I. Zon, Y. Feldman, S.R. Cohen, A.K. Tagantsev and I. Lubomirsky
Version of Record online: 6 NOV 2003 | DOI: 10.1002/adma.200305346
Quasi-amorphous BaTiO3 thin films (see Figure) represent a polar ionic solid without spatial periodicity. Most probably, polarity of the quasi-amorphous BaTiO3 is associated with directional ordering of crystal motifs formed in the steep temperature gradient and stabilized by high in-plane mechanical stress. A remarkable characteristic of quasi-amorphous BaTiO3 is expression of strong pyro- and piezoelectric effects in a low dielectric constant material.