An epitaxial EuTiO3 (ETO) film grown on the SrTiO3 substrate was studied at room temperature with synchrotron XRD and in situ application of an electric field (nominally up to 7.8 kV/cm) in near grazing incidence geometry, in order to monitor the response of the lattice to the field. 2D diffraction images show that apparently misoriented coherently diffracting domains are present close to the surface whereas the film diffracts more as a single crystal towards the interface. Diffraction intensity profiles recorded from the near surface region of the EuTiO3 film showed systematic modifications upon the application of the electric field, indicating that at a critical electric field (nominally above 3.1 kV/cm), there is a clear change in the lattice response to the field, which was much stronger when the field was almost parallel to the diffraction vector. The data suggest that the ETO film, nominally paraelectric at room temperature, transforms under the application of a critical electric field to piezoelectric in agreement with a theoretical analysis based on a double-well potential. In order to exclude effects arising from the substrate, this has been investigated separately and shown not to be affected by the field.

1.
J.
Brous
,
I.
Frankuchen
, and
E.
Banks
,
Acta Cryst.
6
,
67
(
1953
).
2.
T. R.
McGuire
,
M. W.
Shafer
,
R. J.
Joenk
,
H. A.
Halperin
, and
S. J.
Pickart
,
J. Appl. Phys.
37
,
981
(
1966
).
3.
T.
Katsufuji
and
H.
Takagi
,
Phys. Rev. B
64
,
054415
(
2001
).
4.
S.
Kamba
,
D.
Nuzhnyy
, and
P.
Vanek
,
Europhys. Lett.
80
,
27002
(
2007
).
5.
K. A.
Müller
and
H.
Burkard
,
Phys. Rev. B
19
,
3593
(
1979
).
6.
J. H.
Lee
,
L.
Fang
,
E.
Vlahos
,
X.
Ke
,
Y. W.
Jung
,
L.
Fitting Kourkoutis
,
J.-W.
Kim
,
P. J.
Ryan
,
T.
Heeg
,
M.
Roeckerath
 et al,
Nature
466
,
954
(
2010
).
7.
A.
Bussmann-Holder
,
J.
Köhler
,
R. K.
Kremer
, and
J. M.
Law
,
Phys. Rev. B
83
,
212102
(
2011
).
8.
A. P.
Petrovic
,
Y.
Kato
,
S. S.
Sunku
,
T.
Ito
,
P.
Sengupta
,
L.
Spalek
,
M.
Shimuta
,
T.
Katsufuji
,
C. D.
Batista
,
S. S.
Saxena
, and
C.
Panagopoulos
,
Phys. Rev. B
87
,
064103
(
2013
).
9.
D. S.
Ellis
,
H.
Uchiyama
,
S.
Tsutsui
,
K.
Sugimoto
,
K.
Kato
, and
A. Q. R.
Baron
,
Physica B
442
,
34
(
2014
).
10.
D. S.
Ellis
,
H.
Uchiyama
,
S.
Tsutsui
,
K.
Sugimoto
,
K.
Kato
,
D.
Ishikawa
, and
A. Q. R.
Baron
,
Phys. Rev. B
86
,
220301
(
2012
).
11.
Z.
Guguchia
,
A.
Shengelaya
,
H.
Keller
,
J.
Köhler
, and
A.
Bussmann-Holder
,
Phys. Rev. B
85
,
134113
(
2012
).
12.
Z.
Guguchia
,
H.
Keller
,
R. K.
Kremer
,
J.
Köhler
,
H.
Luetkens
,
T.
Goko
,
A.
Amato
, and
A.
Bussmann-Holder
,
Phys. Rev. B
90
,
064413
(
2014
).
13.
J.
Köhler
,
R.
Dinnebier
, and
A.
Bussmann-Holder
,
Phase Transition
85
,
949
(
2012
).
14.
J. L.
Bettis
,
M. H.
Whangbo
,
J.
Köhler
,
A.
Bussmann-Holder
, and
A.
Bishop
,
Phys. Rev. B
84
,
184114
(
2011
).
15.
B.
Stuhlhofer
,
G.
Logvenov
,
M.
Górny
,
K.
Roleder
,
R. K.
Kremer
,
J.
Köhler
, and
A.
Bussmann-Holder
,
Phase Transition
89
,
731
(
2016
).
16.
Z.
Guguchia
,
Z.
Salman
,
H.
Keller
,
K.
Roleder
,
J.
Köhler
, and
A.
Bussmann-Holder
,
Phys. Rev. B
94
,
220406
(
2016
).
17.
A.
Bussmann-Holder
,
J.
Köhler
,
K.
Roleder
,
Z.
Guguchia
, and
H.
Keller
, “Unexpected magnetism at high temperature and novel magneto-dielectric-elastic coupling in EuTiO3: A critical review,”
Thin Solid Films
(published online).
18.
A.
Bussmann-Holder
,
K.
Roleder
,
B.
Stuhlhofer
,
G.
Logvenov
,
I.
Lazar
,
A.
Soszyński
,
J.
Koperski
,
A.
Simon
, and
J.
Köhler
,
Sci. Rep.
7
,
40621
(
2017
).
19.
J.
Schiemer
,
L. J.
Spalek
,
S. S.
Saxena
,
C.
Panagopoulos
,
Y.
Zhao
,
J.
Katsufuji
,
A.
Bussmann-Holder
,
J.
Köhler
, and
M. A.
Carpenter
,
Phys. Rev. B
93
,
054108
(
2016
).
20.
G.
Rupprecht
and
W. H.
Winter
,
Phys. Rev.
155
,
1019
(
1967
).
21.
O. F.
Schirmer
and
K. A.
Müller
,
Phys. Rev. B
7
,
2986
(
1973
).
22.
K.
Uchino
,
S.
Nomura
,
L. E.
Cross
,
R. E.
Newnham
, and
S. J.
Jang
,
J. Mater. Sci.
16
,
569
(
1981
).
23.
C.
Ang
,
R.
Guo
,
A. S.
Bhalla
, and
L. E.
Cross
,
J. Appl. Phys.
87
,
3937
(
2000
).
24.
H. J.
de Jong
and
M.
Glasbeek
,
Solid State Commun.
28
,
683
(
1978
).
25.
P.
Zubko
,
G.
Catalan
, and
A.
Tagantsev
,
Annu. Rev. Mater. Res.
43
,
387
(
2013
).
26.
J.
Toulouse
and
R. K.
Pattniak
,
Phys. Rev. B
65
,
024107
(
2001
).
27.
K.
Uchino
,
J. Phys. Soc. Jpn.
53
,
1531
(
1984
).
28.
F.
Li
,
L.
Jin
,
Z.
Xu
, and
S.
Zhang
,
Appl. Phys. Rev.
1
,
011103
(
2014
).
29.
P.
Reuvekamp
,
K.
Caslin
,
Z.
Guguchia
,
H.
Keller
,
R. K.
Kremer
,
A.
Simon
,
J.
Köhler
, and
A.
Bussmann-Holder
,
J. Phys.: Condens. Matter
27
,
262201
(
2015
).

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