Transmission electron microscopy and scanning transmission electron microscopy study on B-site cation ordered structures in a (1-x)Pb(Mg1/3Nb2/3)O3–xPbTiO3 single crystal

Sato, Yukio; Mizoguchi, Teruyasu; Shibata, Naoya; Moriwake, Hiroki; Hirayama, Tsukasa; Ikuhara, Yuichi
July 2009
Applied Physics Letters;7/13/2009, Vol. 95 Issue 2, p022906
Academic Journal
Transmission electron microscopy and scanning transmission electron microscopy were performed to investigate B-site cation-ordered structures in a (1-x)Pb(Mg1/3Nb2/3)O3–xPbTiO3 (x∼0.30) single crystal. Selected-area diffraction patterns showed presence of F-spots corresponding to 1:1 order. Besides, the F-spots were elongated to be “X”-like in shape. Transmission electron microscopy dark-field images revealed that size of ordered domains was about a few nanometers, and they were dispersed within disordered matrix. Scanning transmission electron microscopy indicated the presence of 1:1 ordered domains. Presence of 1:2 ordered structures was also indicated. These are consistent with features of the selected-area diffraction patterns.


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