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Amorphous Piezo‐ and Pyroelectric Phases of BaZrO 3 and SrTiO 3
Author(s) -
Ehre D.,
Lyahovitskaya V.,
Tagantsev A.,
Lubomirsky I.
Publication year - 2007
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.200602149
Subject(s) - pyroelectricity , materials science , amorphous solid , piezoelectricity , polar , thin film , ferroelectricity , optoelectronics , nanotechnology , composite material , crystallography , dielectric , chemistry , astronomy , physics
Pyro‐ and piezoelectric quasiamorphous thin films of BaZrO 3 and SrTiO 3 are reported. This is the first instance of a polar amorphous solid being created from a compound that does not from polar crystalline polymorphs. The pyroelectric and the piezoelectric properties of the quasi‐amorphous SrTiO 3 are of the same order of magnitude (10–50 %) as those of the most commonly used crystalline pyro‐ and piezo‐electric materials, such as BaTiO 3 , Pb(Ti,Zr)O 3 , and LiNbO 3 (see figure).