The pressure induced phase transition in perovskite was investigated by x-ray total scattering. The evolution of the structure was analyzed by fitting pair distribution functions over a pressure range from ambient pressure up to 6.85(7) GPa. Evidence for the existence of tetragonal ferroelectric nanodomains at high pressure was found. The average size of the nanodomains in the high-pressure phase decreases with increasing pressure. Extrapolation of the domain size to pressures higher than studied experimentally suggests a disappearance of the ferroelectric domains at about 9.3(5) GPa and a cubic symmetry of high-pressure phase.
REFERENCES
1.
2.
H.
Evans
, Acta Crystallogr.
14
, 1019
(1961
).3.
R.
Bechmann
, J. Acoust. Soc. Am.
28
, 347
(1956
).4.
S.
Ikegami
and I.
Ueda
, J. Phys. Soc. Jpn.
19
, 159
(1964
).5.
L.
Parker
and A.
Tasch
, IEEE Circuits Devices Mag.
6
, 17
(1990
).6.
R.
Schwartz
, B.
Wechsler
, and L.
West
, Appl. Phys. Lett.
67
, 1352
(1995
).7.
A.
Bhalla
, R.
Guo
, and R.
Roy
, Mater. Res. Innovations
4
, 3
(2000
).8.
H.
Kay
, Acta Crystallogr.
1
, 229
(1948
).9.
C.
Johnson
, Appl. Phys. Lett.
7
, 221
(1965
).10.
M.
Malinowski
, K.
Lukaszbwicz
, and S.
Åsbrink
, J. Appl. Crystallogr.
19
, 7
(1986
).11.
W.
Merz
, Phys. Rev.
78
, 52
(1950
).12.
E.
Stern
, Phys. Rev. Lett.
93
, 037601
(2004
).13.
A.
Sood
, N.
Chandrabhas
, D. V. S.
Muthu
, and A.
Jayaraman
, Phys. Rev. B
51
, 8892
(1995
).14.
M.
Fischer
and A.
Polian
, Phase Transitions
9
, 205
(1987
).15.
U.
Venkateswaran
, V.
Naik
, and R.
Naik
, Phys. Rev. B
58
, 14256
(1998
).16.
B.
Mejía-Uriarte
, R.
Sato-Berrú
, M.
Navarrete
, M.
Villagrán-Muniz
, C.
Medina-Gutiérrez
, C.
Frausto-Reyes
, and S. H.
Murrieta
, Meas. Sci. Technol.
17
, 1319
(2006
).17.
T.
Ishidate
, S.
Abe
, H.
Takahashi
, and N.
Môri
, Phys. Rev. Lett.
78
, 2397
(1997
).18.
J.
Íñiguez
and D.
Vanderbilt
, Phys. Rev. Lett.
89
, 115503
(2002
).19.
J.
Itié
, B.
Couzinet
, A.
Polian
, A.
Flank
, and P.
Lagarde
, Europhys. Lett.
74
, 706
(2006
).20.
S.
Ravy
, J.
Itié
, A.
Polian
, and M.
Hanfland
, Phys. Rev. Lett.
99
, 117601
(2007
).21.
B.
Ravel
, E.
Stern
, R.
Vedrinskii
, and V.
Kraizman
, Ferroelectrics
206
, 407
(1998
).22.
R.
Boehler
and K.
de Hantsetters
, High Press. Res.
24
, 391
(2004
).23.
R.
Boehler
, Rev. Sci. Instrum.
77
, 115103
(2006
).24.
H.
Mao
, P.
Bell
, J.
Shaner
, and D.
Steinberg
, J. Appl. Phys.
49
, 3276
(1978
).25.
A.
Hammersley
, S.
Svensson
, and A.
Thompson
, Nucl. Instrum. Methods Phys. Res. A
346
, 312
(1994
).26.
X.
Qiu
, J. W.
Thompson
, and S. J. L.
Billinge
, J. Appl. Crystallogr.
37
, 678
(2004
).27.
P.
Chupas
, X.
Qiu
, J.
Hanson
, P.
Lee
, C.
Grey
, and S.
Billinge
, J. Appl. Crystallogr.
36
, 1342
(2003
).28.
C. L.
Farrow
, P.
Juhás
, J. W.
Liu
, D.
Bryndin
, E. S.
Bozin
, J.
Bloch
, T.
Proffen
, and S. J. L.
Billinge
, J. Phys.: Condens. Matter
19
, 335219
(2007
).29.
T.
Ishidate
and S.
Sasaki
, Phys. Rev. Lett.
62
, 67
(1989
).© 2011 American Institute of Physics.
2011
American Institute of Physics
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