Polar behavior was found in ceramic system. Radio-frequency dielectric measurements showed a diffuse maximum at 25–65 K shifting to higher temperatures with increasing measurement frequency and amount of Mn. The observation of hysteretic behavior in the versus curves shows the existence of a polar state at low temperatures. The hysteresis response slowly degenerates into just nonlinearity as the temperature increases. The observed relaxor-type dielectric behavior is attributed to the formation of electric dipoles and corresponding random fields due to the off-center position of ion at the Sr site of highly polarizable lattice.
REFERENCES
1.
K. A.
Müller
and H.
Burkard
, Phys. Rev. B
19
, 3593
(1979
).2.
P. A.
Fleury
, J. F.
Scott
, and J. M.
Worlock
, Phys. Rev. Lett.
21
, 16
(1968
).3.
H.
Uwe
and T.
Sakudo
, Phys. Rev. B
13
, 271
(1976
).4.
M.
Itoh
, R.
Wang
, Y.
Inaguma
, T.
Yamaguchi
, Y. J.
Shan
, and T.
Nakumura
, Phys. Rev. Lett.
82
, 3540
(1999
).5.
J. G.
Bednorz
and K. A.
Müller
, Phys. Rev. Lett.
52
, 2289
(1984
).6.
V. V.
Lemanov
, E. P.
Smirnova
, P. P.
Syrnikov
, and E. A.
Tarakanov
, Phys. Rev. B
54
, 3151
(1996
).7.
V. V.
Lemanov
, E. P.
Smirnova
, and E. A.
Tarakanov
, Fiz. Tverd. Tela (S.-Peterburg)
39
, 714
(1997
)V. V.
Lemanov
, E. P.
Smirnova
, and E. A.
Tarakanov
, [Phys. Solid State
39
, 628
(1997
)].8.
U.
Bianchi
, J.
Dec
, and W.
Kleemann
, Phys. Rev. B
51
, 8737
(1995
).9.
A. V.
Sotnikov
, V. V.
Lemanov
, E. P.
Smirnova
, M.
Weihnacht
, and R.
Kunze
, Ferroelectrics
223
, 113
(1999
).10.
11.
C.
Ang
, Z.
Yu
, P. M.
Vilarinho
, and J. L.
Baptista
, Phys. Rev. B
57
, 7403
(1998
).12.
V.
Porokhonskyy
, A.
Pashkin
, V.
Bovtun
, J.
Petzelt
, M.
Savinov
, P.
Samoukhina
, T.
Ostapchuk
, J.
Pokorny
, M.
Avdeev
, A.
Kholkin
, and P.
Vilarinho
, Phys. Rev. B
69
, 144104
(2004
).13.
R. A.
Serway
, W.
Berlinger
, K. A.
Müller
, and R. W.
Collins
, Phys. Rev. B
16
, 4761
(1977
).14.
V. V.
Lemanov
, E. P.
Smirnova
, A. V.
Sotnikov
, and M.
Weihnacht
, Fiz. Tverd. Tela (S.-Peterburg)
46
, 1402
(2004
)V. V.
Lemanov
, E. P.
Smirnova
, A. V.
Sotnikov
, and M.
Weihnacht
, [Phys. Solid State
46
, 1442
(2004
)].15.
A.
Tkach
, P. M.
Vilarinho
, and A.
Kholkin
, Ferroelectrics
304
, 917
(2004
).16.
J. H.
Barrett
, Phys. Rev.
86
, 118
(1952
).17.
18.
R. D.
Shannon
, Acta Crystallogr., Sect. A: Cryst. Phys., Diffr., Theor. Gen. Crystallogr.
32
, 751
(1976
).19.
T.
Mitsui
and W. B.
Westphal
, Phys. Rev.
124
, 1354
(1961
).20.
L.
Zhang
, W.
Kleemann
, and W.-L.
Zhong
, Phys. Rev. B
66
, 104105
(2002
).21.
R. D.
Shannon
, J. Appl. Phys.
73
, 348
(1993
).22.
R.
Ranjan
, D.
Pandey
, and N. P.
Lalla
, Phys. Rev. Lett.
84
, 3726
(2000
).23.
W.
Kleemann
, J.
Dec
, Y. G.
Wang
, P.
Lehnen
, and S. A.
Prosandeev
J. Phys. Chem. Solids
61
, 167
(2000
).© 2005 American Institute of Physics.
2005
American Institute of Physics
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