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Pyroelectricity in Highly Stressed Quasi‐Amorphous Thin Films
Author(s) -
Lyahovitskaya V.,
Zon I.,
Feldman Y.,
Cohen S.R.,
Tagantsev A.K.,
Lubomirsky I.
Publication year - 2003
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200305346
Subject(s) - amorphous solid , materials science , pyroelectricity , piezoelectricity , thin film , polarity (international relations) , dielectric , crystal (programming language) , ionic crystal , composite material , polar , ionic bonding , condensed matter physics , ferroelectricity , crystallography , nanotechnology , optoelectronics , ion , organic chemistry , chemistry , genetics , physics , astronomy , biology , computer science , cell , programming language
Quasi‐amorphous BaTiO 3 thin films (see Figure) represent a polar ionic solid without spatial periodicity. Most probably, polarity of the quasi‐amorphous BaTiO 3 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 BaTiO 3 is expression of strong pyro‐ and piezoelectric effects in a low dielectric constant material.