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Observation of Domain Wall Structures in Triglycine Sulfate by Using Scanning Probe Microscopy
Makoto Iwata,Fumihiko Itoh,Takuma Morishita,Rintaro Aoyagi,Masaki Maeda,Yoshihiro Ishibashi 한국물리학회 2009 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.55 No.2
The 180˚ domain wall structure on the (010) cleavage plane in triglycine sulfate (TGS) was investigated using scanning probe microscopy (SPM). We found that a step pattern with an interval of one half the lattice constant b appeared on the cleavage plane. Using friction force microscopy (FFM), the contrast of the friction image was found to be composed of two friction values in the step pattern, implying that the friction image shows an 180± domain wall structure. We also con¯rmed that the lenticular domain wall structure in TGS could be observed in the quenched sample by using FFM. The 180˚ domain wall structure on the (010) cleavage plane in triglycine sulfate (TGS) was investigated using scanning probe microscopy (SPM). We found that a step pattern with an interval of one half the lattice constant b appeared on the cleavage plane. Using friction force microscopy (FFM), the contrast of the friction image was found to be composed of two friction values in the step pattern, implying that the friction image shows an 180± domain wall structure. We also con¯rmed that the lenticular domain wall structure in TGS could be observed in the quenched sample by using FFM.