X-Ray Diffraction Topography on a BaTiO3 Crystal
2004 年 73 巻 4 号 p. 1050-1053
詳細
2004 年 73 巻 4 号 p. 1050-1053
We have observed 90° domain walls in a bulk BaTiO3 crystal by synchrotron radiation topography, coupled with a CCD detector. The BaTiO3 multi-domain crystal was revealed to be strained at the 90° domain boundary. The polar direction of the BaTiO3 crystal was tilted by this strain, and this strain also causes the irregular angle of the surface bending mode. The synchrotron X-ray topography can be performed on a sample with electrodes. The topographic image of the ferroelectric domain with an electric field clarified that the well-known stripe domain configuration can not be observed without a weak electric field due to the lattice strain at the domain boundary.
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