Crystal growth, crystal structure and chemical composition of a pyrochlore type compound in lead-magnesium-niobium-oxygen system

N. Wakiya; A. Saiki; N. Ishizawa; K. Shinozaki; N. Mizutani

doi:10.1016/0025-5408(93)90082-O

Crystal growth, crystal structure and chemical composition of a pyrochlore type compound in lead-magnesium-niobium-oxygen system

N. Wakiya, A. Saiki, N. Ishizawa, K. Shinozaki, N. Mizutani^*

^*Corresponding author for this work

Materials Design and Engineering

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

37 Scopus citations

Abstract

The single crystal of pyrochlore type compound in PbMgNbO system (Pb_1.86Mg_0.24Nb_1.76O_6.5) was grown by using a PbO flux. The space group is Fd3m with a=1.06029(2)nm, V=1.19200(1)nm³, Z=8, Dx=7.34gcm^-3 and μ(MoK_α)=547.28cm^-1. Both oxygen vacancies and cations are not ordered. Refined final R and Rw are 3.08% and 2.83% respectively for 213 independent reflection data collected on a four-circle X-ray diffractometer. The crystal is characterized by the pyrochlore structure having deficient Pb at the A(8d) site and deficient O at the O₍₂₎(8B) site. Mg and Nb statistically occupy the B(8c) site. The oxygen content 6.5 seems common in this type of compounds.

Original language	English
Pages (from-to)	137-143
Number of pages	7
Journal	Materials Research Bulletin
Volume	28
Issue number	2
DOIs	https://doi.org/10.1016/0025-5408(93)90082-O
State	Published - 1993/02

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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@article{d2141de0ea09436a9feca351c1b51099,

title = "Crystal growth, crystal structure and chemical composition of a pyrochlore type compound in lead-magnesium-niobium-oxygen system",

abstract = "The single crystal of pyrochlore type compound in PbMgNbO system (Pb1.86Mg0.24Nb1.76O6.5) was grown by using a PbO flux. The space group is Fd3m with a=1.06029(2)nm, V=1.19200(1)nm3, Z=8, Dx=7.34gcm-3 and μ(MoKα)=547.28cm-1. Both oxygen vacancies and cations are not ordered. Refined final R and Rw are 3.08% and 2.83% respectively for 213 independent reflection data collected on a four-circle X-ray diffractometer. The crystal is characterized by the pyrochlore structure having deficient Pb at the A(8d) site and deficient O at the O(2)(8B) site. Mg and Nb statistically occupy the B(8c) site. The oxygen content 6.5 seems common in this type of compounds.",

author = "N. Wakiya and A. Saiki and N. Ishizawa and K. Shinozaki and N. Mizutani",

year = "1993",

month = feb,

doi = "10.1016/0025-5408(93)90082-O",

language = "英語",

volume = "28",

pages = "137--143",

journal = "Materials Research Bulletin",

issn = "0025-5408",

publisher = "Elsevier Ltd.",

number = "2",

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TY - JOUR

T1 - Crystal growth, crystal structure and chemical composition of a pyrochlore type compound in lead-magnesium-niobium-oxygen system

AU - Wakiya, N.

AU - Saiki, A.

AU - Ishizawa, N.

AU - Shinozaki, K.

AU - Mizutani, N.

PY - 1993/2

Y1 - 1993/2

N2 - The single crystal of pyrochlore type compound in PbMgNbO system (Pb1.86Mg0.24Nb1.76O6.5) was grown by using a PbO flux. The space group is Fd3m with a=1.06029(2)nm, V=1.19200(1)nm3, Z=8, Dx=7.34gcm-3 and μ(MoKα)=547.28cm-1. Both oxygen vacancies and cations are not ordered. Refined final R and Rw are 3.08% and 2.83% respectively for 213 independent reflection data collected on a four-circle X-ray diffractometer. The crystal is characterized by the pyrochlore structure having deficient Pb at the A(8d) site and deficient O at the O(2)(8B) site. Mg and Nb statistically occupy the B(8c) site. The oxygen content 6.5 seems common in this type of compounds.

AB - The single crystal of pyrochlore type compound in PbMgNbO system (Pb1.86Mg0.24Nb1.76O6.5) was grown by using a PbO flux. The space group is Fd3m with a=1.06029(2)nm, V=1.19200(1)nm3, Z=8, Dx=7.34gcm-3 and μ(MoKα)=547.28cm-1. Both oxygen vacancies and cations are not ordered. Refined final R and Rw are 3.08% and 2.83% respectively for 213 independent reflection data collected on a four-circle X-ray diffractometer. The crystal is characterized by the pyrochlore structure having deficient Pb at the A(8d) site and deficient O at the O(2)(8B) site. Mg and Nb statistically occupy the B(8c) site. The oxygen content 6.5 seems common in this type of compounds.

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U2 - 10.1016/0025-5408(93)90082-O

DO - 10.1016/0025-5408(93)90082-O

M3 - 学術論文

AN - SCOPUS:0027540107

SN - 0025-5408

VL - 28

SP - 137

EP - 143

JO - Materials Research Bulletin

JF - Materials Research Bulletin

IS - 2

ER -

Crystal growth, crystal structure and chemical composition of a pyrochlore type compound in lead-magnesium-niobium-oxygen system

Abstract

ASJC Scopus subject areas

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