Structural fluctuation of Pb(Mg1/3Nb2/3)O3 in the cubic phase

被引：6

作者：

Noda, Shota ^{[1
]}

Yokoi, Yuto ^{[1
]}

Nakahira, Yuki ^{[1
]}

Abe, Tomohiro ^{[1
]}

Fujii, Ichiro ^{[2
]}

Wada, Takahiro ^{[3
]}

Moriyoshi, Chikako ^{[1
]}

Kuroiwa, Yoshihiro ^{[1
]}

机构：

[1] Hiroshima Univ, Dept Phys Sci, Higashihiroshima, Hiroshima 7398526, Japan

[2] Univ Yamanashi, Grad Fac Interdisciplinary Res, Kofu, Yamanashi 4008510, Japan

[3] Ryukoku Univ, Dept Mat Chem, Otsu, Shiga 5202194, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS | 2019年 / 58卷 / SL期

关键词：

EFFECTIVE IONIC-RADII; RELAXOR FERROELECTRICS; POWDER DIFFRACTION; CHARGE-DENSITY; PB ATOM; DISORDER; PBMG1/3NB2/3O3; TRANSITION;

D O I：

10.7567/1347-4065/ab389e

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To investigate the structural fluctuations of relaxor Pb(Mg1/3Nb2/3)O-3 (PMN) in the cubic phase, the probability density function of each atom was determined by high-energy synchrotron radiation X-ray powder diffraction measurements and a Rietveld analysis with anharmonic temperature factors. A rotator-like behavior of the Pb ion was observed in the cubic phase. The off-center behavior along the < 1 1 1 > directions became pronounced with decreasing temperature. The ferroelectricity of PMN was attributed to a combination of the freezing of the < 1 1 1 >-preferred rotator-like disorder and the ferroelectric distortion of the B-O-6 octahedron. (C) 2019 The Japan Society of Applied Physics

引用

页数：5

共 46 条

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