[20a-231A-1~10] 9.1 誘電材料・誘電体

▲ [20a-231A-10] Local Structure analysis on PbZr_0.7Ti_0.3O₃ by X-ray Fluorescence Holography

〇(P)CONG LU¹、Kouichi Hayashi¹、Kana Murase¹、Wen Hu²、Kenji Ohwada³、Tomohiro Matsushita⁴、Koji Kimura¹、Naohisa Happo⁵、Shinya Hosokawa⁶、Alexei A Bokov⁷、Zuo-Guang Ye⁷ (1.Nagoya Inst. of Tech.、2.Brookhaven National Lab.、3.Japan Atomic Energy Agency、4.JASRI、5.Hiroshima City Univ.、6.Kumamoto Univ.、7.Simon Fraser Univ.)

キーワード：Ferroelectrics, X-ray Fluorescence Holography, Local Structure

X-ray fluorescence holography (XFH) is a powerful technique that can visualize 3D atomic images of local structures around specific elements within a range of several nanometers. Therefore, we have revealed local structures of many functional materials. Pb(Zr_xTi_1-x)O₃ (PZT) is a technologically important compound due to its superior dielectric and piezoelectric properties and extremely wide fields of application. PZT shows several macroscopic phase transitions under the different compositions. We carried on the study of the local structural investigation XFH. In the measurement, all the three elements (A-site Pb and B-site Zr/Ti) were chosen as the emitter atoms for attaining holograms using the beamline BL22XU at the Spring8 synchrotron radiation facility. In our research, we focus on local structure analysis in the composition of PbZr_0.7Ti_0.3O₃ by XFH.