Domain structure of PbTiO3 films grown on vicinal (001)SrTiO3
Theis, C.D.
Schlom, D.G.
Dept. of Mater. Sci. & Eng., Pennsylvania State Univ., University Park, PA;
This paper appears in: Applications of Ferroelectrics, 1996. ISAF '96., Proceedings of the Tenth IEEE International Symposium on
Publication Date: 18-21 Aug 1996
Volume: 1,
On page(s): 491-494 vol.1
Meeting Date: 08/18/1996 - 08/21/1996
Location: East Brunswick, NJ, USA
ISBN: 0-7803-3355-1
References Cited: 12
INSPEC Accession Number: 5723545
Digital Object Identifier: 10.1109/ISAF.1996.602796
Current Version Published: 2002-08-06
Abstract
Epitaxial PbTiO3 films have been grown on vicinal (001)
SrTiO3 substrates by pulsed laser deposition. Vicinal SrTiO
3 substrates with misorientations up to 9° from (001)
were used and the influence of the direction of misorientation on the
resulting domain structure was studied. 4-circle x-ray diffraction
analysis indicates that thin (40 nm) PbTiO3 films are
completely c-axis oriented (rocking curve FWHM of 0.25° for the 002
reflection) and that thicker films (~200 nm) contain mixed a-axis and
c-axis PbTiO3 domains due to twinning along {011} planes. The
[100] axis of the a-axis domains are misoriented by 2.1° to 3.3°
toward ⟨100⟩ substrate directions with respect to the [001]
axis of the c-axis domains. In contrast to growth on well-oriented (001)
SrTiO3 surfaces where the four equivalent tilts of the [100]
axis of the a-axis domains are equally likely, on vicinal SrTiO3
the a-axis domains are preferentially oriented in an uphill
direction with respect to the crystallographic miscut
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