Orthorhombic BiFeO3.
A new orthorhombic phase of the multiferroic BiFeO3 has been created via strain engineering by growing it on a NdScO(3)(110)(o) substrate. The tensile-strained orthorhombic BiFeO3 phase is ferroelectric and antiferromagnetic at room temperature. A combination of nonlinear optical second harmonic generation and piezoresponse force microscopy revealed that the ferroelectric polarization in the orthorhombic phase is along the in-plane {110}(pc) directions. In addition, the corresponding rotation of the antiferromagnetic axis in this new phase was observed using x-ray linear dichroism.
Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 300, Taiwan.
J C
JC
Yang
Q
Q
He
S J
SJ
Suresha
C Y
CY
Kuo
C Y
CY
Peng
R C
RC
Haislmaier
M A
MA
Motyka
G
G
Sheng
C
C
Adamo
H J
HJ
Lin
Z
Z
Hu
L
L
Chang
L H
LH
Tjeng
E
E
Arenholz
N J
NJ
Podraza
M
M
Bernhagen
R
R
Uecker
D G
DG
Schlom
V
V
Gopalan
L Q
LQ
Chen
C T
CT
Chen
R
R
Ramesh
Y H
YH
Chu