We report on the magnetically tunable ferroelectricity and giant magnetoelectric sensitivity up to 250 K in a Y-type hexaferrite, BaSrCoZnFe11AlO22. Not only the magnitude but also the sign of electric polarization can be effectively controlled by applying low magnetic fields (a few hundreds of Oe) that modifies the spiral magnetic structures. The magnetically induced ferroelectricity is stabilized even in zero magnetic field. Decayless reproducible flipping of electric polarization by oscillating low magnetic fields is shown. The maximum linear magnetoelectric coefficient reaches a high value of ∼3.0 × 103 ps/m at 200 K.
REFERENCES
1.
T.
Kimura
, T.
Goto
, H.
Shintani
, K.
Ishizaka
, T.
Arima
, and Y.
Tokura
, Nature
426
, 55
(2003
).2.
N.
Hur
, S.
Park
, P. A.
Sharma
, J. S.
Ahn
, S.
Guha
, and S.-W.
Cheong
, Nature
429
, 392
(2004
).3.
Y.
Yamasaki
, S.
Miyasaka
, Y.
Kaneko
, J. P.
He
, T.
Arima
, and Y.
Tokura
, Phys. Rev. Lett.
96
, 249902
(2006
).4.
S. W.
Cheong
and M.
Mostovoy
, Nature Mater.
6
, 13
(2007
).5.
T.
Kimura
, Annu. Rev. Mater. Res.
37
, 387
(2007
).6.
H.
Katsura
, N.
Nagaosa
, and A. V.
Balatsky
, Phys. Rev. Lett.
95
, 057205
(2005
).7.
I. A.
Sergienko
and E.
Dagotto
, Phys. Rev. B
73
, 094434
(2006
).8.
T.
Kimura
, G.
Lawes
, and A. P.
Ramirez
, Phys. Rev. Lett.
94
, 137201
(2005
).9.
S. H.
Chun
, Y. S.
Chai
, Y. S.
Oh
, D.
Jaiswal-Nagar
, S. Y.
Haam
, I.
Kim
, B.
Lee
, D. H.
Nam
, K.-T.
Ko
, J.-H.
Park
, J.-H.
Chung
, and K. H.
Kim
, Phys. Rev. Lett.
104
, 037204
(2010
).10.
S.
Ishiwata
, Y.
Taguchi
, H.
Murakawa
, Y.
Onose
, and Y.
Tokura
, Science
319
, 1643
(2008
).11.
K.
Taniguchi
, N.
Abe
, S.
Ohtani
, H.
Umetsu
, and T.
Arima
, Appl. Phys. Express
1
, 031301
(2008
).12.
Y.
Kitagawa
, Y.
Hiraoka
, T.
Honda
, T.
Ishikura
, H.
Nakamura
, and T.
Kimura
, Nature Mater.
9
, 797
(2010
).13.
M.
Soda
, T.
Ishikura
, H.
Nakamura
, Y.
Wakabayashi
, and T.
Kimura
, Phys. Rev. Lett.
106
, 087201
(2011
).14.
Y.
Tokunaga
, Y.
Kaneko
, D.
Okuyama
, S.
Ishiwata
, T.
Arima
, S.
Wakimoto
, K.
Kakurai
, Y.
Taguchi
, and Y.
Tokura
, Phys. Rev. Lett.
105
, 257201
(2010
).15.
K.
Okumura
, T.
Ishikura
, M.
Soda
, T.
Asaka
, H.
Nakamura
, Y.
Wakabayashi
, and T.
Kimura
, Appl. Phys. Lett.
98
, 212504
(2011
).16.
H.
Sagayama
, K.
Taniguchi
, N.
Abe
, T.
Arima
, Y.
Nishikawa
, S.
Yano
, Y.
Kousaka
, J.
Akimitsu
, M.
Matsuura
, and K.
Hirota
, Phys. Rev. B
80
, 180419
–R
(2009
).17.
S.
Ishiwata
, Y.
Taguchi
, Y.
Tokunaga
, H.
Murakawa
, Y.
Onose
, and Y.
Tokura
, Phys. Rev. B
79
, 180408
–R
(2009
).18.
H. B.
Lee
, Y.-S.
Song
, J.-H.
Chung
, S. H.
Chun
, Y. S.
Chai
, K. H.
Kim
, M.
Reehuis
, K.
Prokeš
, and S.
Mat’aš
, Phys. Rev. B
83
, 144425
(2011
).19.
G.
Albanese
, M.
Carbucicchio
, A.
Deriu
, G.
Asti
, and S.
Rinaldi
, Appl. Phys.
7
, 227
(1975
).© 2012 American Institute of Physics.
2012
American Institute of Physics
You do not currently have access to this content.
