Analysis of ferroelectric 180°-domain structures in BaTiO_3 by use of second-harmonic scattering

Abstract

We present a method of determining the distribution of sizes of ferroelectric 180 degrees domains in BaTiO(3), using second-harmonic scattering. We find that the domains are rods with approximately square cross sections that extend from the -c to the +c face of the crystal, with widths ranging from 2 to 150 mum.

Domain orientation in ultrathin (Ba,Sr)TiO3 films measured by optical second harmonic generation

“…[7][8][9] . Following this, Gopalan et al 10 and Barad et al 11,12 demonstrated the use of polarization diagrams to investigate the domain structures in KnbO 3 and B 14 Ti 3 O 12 .…”

Theoretical Study of Ferroelectric and Optical Properties in the 180� Ferroelectric Domain Wall of Tetragonal BaTiO3

“…In recent years, a number of experimental investigations was reported focusing on characterizing the ferroelectric domains and domain walls in BaTiO 3 [8][9][10][11][12][13][14][15][16] as well as in other ferroelectric materials [17][18][19][20]. Transmission electron microscopy, X-ray spectroscopy, as well as scanning force microcopy have been applied with very limited success though: In fact, none of these inspections was able to deliver some experimental data on the physical properties within the 180 domain wall of BaTiO 3 .…”

Mapping of periodically poled crystals via spontaneous parametric down-conversion

“…One needs to make a statistical treatment of the data on domain widths, obtained from the whole surface of the structure, to make conclusion about its quality for a nonlinear optical application. On the other hand, the methods based on non-linear optical effects such as imaging via secondharmonic generation [9][10][11], domain mapping via terahertz wave form analysis [12], and the method based on spontaneous parametric down-conversion (SPDC) [13][14][15] are free of these disadvantages. Usually, an appropriate non-linear effect is taken as an initial probing process to test inner parts of a PP structure and to predict its general characteristics in other non-linear applications.…”