The electrostrictive coefficients of prototype cubic phase of PbMg1/3Nb2/3O3 are studied using a high-resolution neutron powder diffraction experiment. The key idea of the approach is to “eliminate” from the material the inhomogeneity related to the presence of the double-phase mixture “polar regions/nonpolar matrix,” and to study two structurally homogeneous states: prototype cubic at temperatures above 600 K and rhombohedral ferroelectric at temperatures below 220 K. The obtained value of volumetric electrostrictive coefficient, Qh=(8.3±1.0)×10−2×(m4/C2), is consistent with those of other perovskite ferroelectrics with a prototype cubic phase.

1.
K.
Uchino
,
S.
Nomura
,
L. E.
Cross
,
R. E.
Newnham
, and
S. J.
Jang
,
J. Mater. Sci.
16
,
569
(
1981
).
2.
J.
Zhao
,
Q. M.
Zhang
,
N.
Kim
, and
T.
Shrout
Jpn. J. Appl. Phys., Part 1
34
,
5658
(
1995
).
3.
V.
Sundar
and
R. E.
Newnham
,
Ferroelectrics
135
,
431
(
1992
).
4.
J.
Kuwata
,
K.
Uchino
, and
S.
Nomura
,
Jpn. J. Appl. Phys.
19
,
2099
(
1980
).
5.
Q. M.
Zhang
and
J.
Zhao
,
Appl. Phys. Lett.
71
,
1649
(
1997
).
6.
G.
Schmidt
,
G.
Borchhardt
,
J.
von Cieminsky
,
D.
Grutzmann
,
E.
Purinsch
, and
V. A.
Isupov
,
Ferroelectrics
42
,
3
(
1982
).
7.
N.
de Mathan
,
E.
Husson
,
C.
Calvarin
,
J.
Gavarri
,
A.
Hewat
, and
A.
Morell
,
J. Phys.: Condens. Matter
3
,
8159
(
1991
).
8.
L. E.
Cross
,
Ferroelectrics
76
,
241
(
1987
).
9.
G.
Burns
and
F. H.
Dacol
,
Solid State Commun.
48
,
853
(
1983
).
10.
P.
Bonneau
,
P.
Garnier
,
G.
Calvarin
,
E.
Husson
,
J.
Gavarri
,
A.
Hewat
, and
A.
Morell
,
J. Solid State Chem.
91
,
350
(
1991
).
11.
Z.-G.
Ye
and
H.
Schmid
,
Ferroelectrics
145
,
83
(
1993
).
12.
H.
Arndt
,
F.
Sauerbier
,
G.
Schmidt
, and
L. A.
Shebanov
,
Ferroelectrics
79
,
145
(
1988
).
13.
R.
Sommer
,
N. K.
Yushin
, and
J. J.
van der Klink
,
Phys. Rev. B
48
,
13
230
(
1993
).
14.
N.
de Mathan
,
E.
Husson
,
G.
Calvarin
, and
A.
Morell
,
Mater. Res. Bull.
26
,
1167
(
1991
).
15.
A.
Le Bail
,
H.
Duroy
, and
J. L.
Fourquet
,
Mater. Res. Bull.
23
,
447
(
1988
).
16.
For the phase transition from cubic to rhombohedral phase, electrostrictive coefficients Q11 and Q12 cannot be determined separately using only the data on the lattice parameters which allow only determination of their combination, Q11+2 Q12. Independent evaluation of Q11 and Q12 requires additional experiment.
This content is only available via PDF.
You do not currently have access to this content.