TY - JOUR
KW - Harmonic generation
KW - Morphotropic phase boundaries
KW - Bismuth ferrite
KW - Theoretical study
KW - Bismuth
KW - Ferrite
KW - Epitaxial strain
KW - Optical second harmonic generation
KW - Lead-free ferroelectrics
KW - Monoclinic distortion
KW - Monoclinic phasis
KW - Relative ratios
KW - Rhombohedral unit cells
KW - Tetragonal and rhombohedral phasis
KW - Nonlinear optics
KW - Optical films
AU - A Kumar
AU - S Denev
AU - R.J Zeches
AU - E Vlahos
AU - N.J Podraza
AU - A Melville
AU - D.G Schlom
AU - Ramamoorthy Ramesh
AU - V Gopalan
AB - Epitaxial strain can induce the formation of morphotropic phase boundary in lead free ferroelectrics like bismuth ferrite, thereby enabling the coexistence of tetragonal and rhombohedral phases in the same film. The relative ratio of these phases is governed by the film thickness and theoretical studies suggest that there exists a monoclinic distortion of both the tetragonal as well as the rhombohedral unit cells due to imposed epitaxial strain. In this work we show that optical second harmonic generation can distinguish the tetragonal-like phase from the rhombohedral-like phase and enable detection of monoclinic distortion in only a pure tetragonal-like phase. © 2010 American Institute of Physics.
BT - Applied Physics Letters
DO - 10.1063/1.3483923
LA - eng
M1 - 11
N1 - cited By 28
N2 - Epitaxial strain can induce the formation of morphotropic phase boundary in lead free ferroelectrics like bismuth ferrite, thereby enabling the coexistence of tetragonal and rhombohedral phases in the same film. The relative ratio of these phases is governed by the film thickness and theoretical studies suggest that there exists a monoclinic distortion of both the tetragonal as well as the rhombohedral unit cells due to imposed epitaxial strain. In this work we show that optical second harmonic generation can distinguish the tetragonal-like phase from the rhombohedral-like phase and enable detection of monoclinic distortion in only a pure tetragonal-like phase. © 2010 American Institute of Physics.
PY - 2010
T2 - Applied Physics Letters
TI - Probing mixed tetragonal/rhombohedral-like monoclinic phases in strained bismuth ferrite films by optical second harmonic generation
VL - 97
SN - 00036951
ER -