Abstract
We demonstrate the application of confocal Raman microscopy (CRM) for nondestructive imaging of ferroelectric domains both at the surface and in the bulk of lead magnesium niobate-lead titanate (PMN-PT) ferroelectric single crystals. The studied model periodical domain structure was created at a [001] cut of tetragonal-phase PMN-PT crystal by the electron beam patterning technique. It was shown that the surface CRM domain image coincides in details with the image obtained by piezoresponse force microscopy.
Highlights
The multiaxial ferroelectric crystals of Pb(Mg1/3 Nb2/3 )O3 -xPbTiO3 (PMN-xPT) family have been actively studied over the past decades as materials with record piezoelectric coefficients and electromechanical coupling factor [1,2,3]
We demonstrate the application of the confocal Raman microscopy (CRM) technique for domain imaging at the surface and in the crystal bulk for studying the model structure of periodical c-domains with 180◦ walls created by the electron beam patterning technique in tetragonal-phase PMN-PT crystal
The studied PMN-39PT single crystals grown by the modified Bridgman technique [30] represent the tetragonal phase at room temperature
Summary
The multiaxial ferroelectric crystals of Pb(Mg1/3 Nb2/3 )O3 -xPbTiO3 (PMN-xPT) family have been actively studied over the past decades as materials with record piezoelectric coefficients and electromechanical coupling factor [1,2,3]. These crystals possess very high nonlinear-optical and electro-optical coefficients (about 10 times higher than those of lithium niobate) [4,5]. The CRM imaging has been applied recently for domain walls visualization in uniaxial ferroelectrics lithium niobate (LiNbO3 , LN) [20,21,22,27], lithium tantalate
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