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
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Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University
Condensed Matter Science and Technology Institute, School of Instrumentation Science and Engineering, Harbin Institute of TechnologyKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University
Hang XU
Bo WANG
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Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal UniversityKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University
Bo WANG
Ji QI
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Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University
Condensed Matter Science and Technology Institute, School of Instrumentation Science and Engineering, Harbin Institute of TechnologyKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University
Ji QI
Mei LIU
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Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal UniversityKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University
Mei LIU
Fei TENG
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Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University
College of Mathematics, Jilin NormalKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University
Fei TENG
Linglong HU
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Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal UniversityKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University
Linglong HU
Yuan ZHANG
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Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal UniversityKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University
Yuan ZHANG
Chaoqun QU
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Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal UniversityKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University
Chaoqun QU
Ming FENG
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Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal UniversityKey Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University