Acute and obtuse rhombohedrons in the local structures of relaxor ferroelectric Pb(Mg 1/3 Nb 2/3)O 3

Wen Hu; Kouichi Hayashi; Kenji Ohwada; Jun Chen; Naohisa Happo; Shinya Hosokawa; Masamitu Takahasi; Alexei A. Bokov; Zuo Guang Ye

doi:10.1103/PhysRevB.89.140103

Acute and obtuse rhombohedrons in the local structures of relaxor ferroelectric Pb(Mg 1/3 Nb 2/3)O 3

Wen Hu, Kouichi Hayashi, Kenji Ohwada, Jun Chen, Naohisa Happo, Shinya Hosokawa, Masamitu Takahasi, Alexei A. Bokov, Zuo Guang Ye

Materials Development Division

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37 Citations (Scopus)

Abstract

The local structures around Nb and Pb in the prototypical relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 (PMN) were investigated by x-ray fluorescence holography. The separate atomic images of nearest Pb around Nb revealed acute and obtuse rhombohedral structures of the crystal unit cells. The Pb-Pb correlated images showed a local structure of body-center-like 2a0×2a0×2a0 superlattice, proving a rigid three-dimensional network structural model combining the two kinds of rhombohedrons. The Pb atoms in the networks are positionally stable, while the other Pb atoms are fluctuating. This superstructure and the fluctuating Pb and Nb atoms are believed to play an important role in the relaxor behavior of PMN at the atomic level.

Original language	English
Article number	140103
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	89
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.89.140103
Publication status	Published - 2014 Apr 29

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.89.140103

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Acute and obtuse rhombohedrons in the local structures of relaxor ferroelectric Pb(Mg 1/3 Nb 2/3)O 3. / Hu, Wen; Hayashi, Kouichi; Ohwada, Kenji; Chen, Jun; Happo, Naohisa; Hosokawa, Shinya; Takahasi, Masamitu; Bokov, Alexei A.; Ye, Zuo Guang.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 89, No. 14, 140103, 29.04.2014.

Research output: Contribution to journal › Article › peer-review

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abstract = "The local structures around Nb and Pb in the prototypical relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 (PMN) were investigated by x-ray fluorescence holography. The separate atomic images of nearest Pb around Nb revealed acute and obtuse rhombohedral structures of the crystal unit cells. The Pb-Pb correlated images showed a local structure of body-center-like 2a0×2a0×2a0 superlattice, proving a rigid three-dimensional network structural model combining the two kinds of rhombohedrons. The Pb atoms in the networks are positionally stable, while the other Pb atoms are fluctuating. This superstructure and the fluctuating Pb and Nb atoms are believed to play an important role in the relaxor behavior of PMN at the atomic level.",

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AU - Hu, Wen

AU - Hayashi, Kouichi

AU - Ohwada, Kenji

AU - Chen, Jun

AU - Happo, Naohisa

AU - Hosokawa, Shinya

AU - Takahasi, Masamitu

AU - Bokov, Alexei A.

AU - Ye, Zuo Guang

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N2 - The local structures around Nb and Pb in the prototypical relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 (PMN) were investigated by x-ray fluorescence holography. The separate atomic images of nearest Pb around Nb revealed acute and obtuse rhombohedral structures of the crystal unit cells. The Pb-Pb correlated images showed a local structure of body-center-like 2a0×2a0×2a0 superlattice, proving a rigid three-dimensional network structural model combining the two kinds of rhombohedrons. The Pb atoms in the networks are positionally stable, while the other Pb atoms are fluctuating. This superstructure and the fluctuating Pb and Nb atoms are believed to play an important role in the relaxor behavior of PMN at the atomic level.

AB - The local structures around Nb and Pb in the prototypical relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 (PMN) were investigated by x-ray fluorescence holography. The separate atomic images of nearest Pb around Nb revealed acute and obtuse rhombohedral structures of the crystal unit cells. The Pb-Pb correlated images showed a local structure of body-center-like 2a0×2a0×2a0 superlattice, proving a rigid three-dimensional network structural model combining the two kinds of rhombohedrons. The Pb atoms in the networks are positionally stable, while the other Pb atoms are fluctuating. This superstructure and the fluctuating Pb and Nb atoms are believed to play an important role in the relaxor behavior of PMN at the atomic level.

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Acute and obtuse rhombohedrons in the local structures of relaxor ferroelectric Pb(Mg 1/3 Nb 2/3)O 3

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