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

Japan Atomic Energy Agency
Tohoku University
University of Science and Technology Beijing
Hiroshima City University
Kumamoto University
Simon Fraser University

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

51 Scopus citations

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
State	Published - 29 Apr 2014
Externally published	Yes

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10.1103/PhysRevB.89.140103

Cite this

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

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{\texttimes}2a0{\texttimes}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.",

author = "Wen Hu and Kouichi Hayashi and Kenji Ohwada and Jun Chen and Naohisa Happo and Shinya Hosokawa and Masamitu Takahasi and Bokov, \{Alexei A.\} and Ye, \{Zuo Guang\}",

year = "2014",

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day = "29",

doi = "10.1103/PhysRevB.89.140103",

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volume = "89",

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T1 - Acute and obtuse rhombohedrons in the local structures of relaxor ferroelectric Pb(Mg 1/3 Nb 2/3)O 3

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

PY - 2014/4/29

Y1 - 2014/4/29

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.

UR - https://www.scopus.com/pages/publications/84899713661

U2 - 10.1103/PhysRevB.89.140103

DO - 10.1103/PhysRevB.89.140103

M3 - 文章

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SN - 1098-0121

VL - 89

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 14

M1 - 140103

ER -

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

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