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Domain Observation in PIN-PT Mixed Crystal near a Morphotropic Phase Boundary
Naohiko Yasuda,Hidehiro Ohwa,Ikuo Suzuki,Makoto Iwata,Masaki Maeda,Naoya Uemura,Yohachi Yamashita,Yoshihiro Ishibashi 한국물리학회 2003 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.42 No.IV
Domain structrues in 0:72Pb(In1=2Nb1=2)O3-0.28PbTiO3[0.72PIN-0.28PT]mixed crystal was investigated by a polarized light microscopy. It was found that the (001) plate of 0.72PIN-0.28PT single crystal near a morphotropic phase boundary (MPB) exhibits complex domain structures, which consist of both the rhombohedral and the tetragonal phase intimately mixed together. The change in domain structures, re ecting the successive rhombohedral-tetragonal-cubic phase transition with heating was observed. The temperature dependence of the birefringence in 0.72PIN-0.28PT single crystal near a MPB was also presented. The change in domain structures in the (001) plate of 0.72PIN-0.28PT with the phase transition from rhombohedral to tetragonal ind훔