Phase relations and crystal structures in the systems (Bi,Ln)2WO(6) and (Bi,Ln)(2)MoO6 (Ln = lanthanide)

Peter S. Berdonosov; Dmitri O. Charkin; Kevin S. Knight; Karen E. Johnston; Richard J. Goff; Valeriy A. Dolgikh; Philip Lightfoot

doi:10.1016/j.jssc.2006.07.008

Phase relations and crystal structures in the systems (Bi,Ln)2WO(6) and (Bi,Ln)(2)MoO6 (Ln = lanthanide)

Peter S. Berdonosov, Dmitri O. Charkin, Kevin S. Knight, Karen E. Johnston, Richard J. Goff, Valeriy A. Dolgikh, Philip Lightfoot

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

Abstract

Several outstanding aspects of phase behaviour in the systems (Bi,Ln)(2)WO6 and (Bi,Ln)(2)MoO6 (Ln = lanthanide) have been clarified. Detailed crystal structures, from Rietveld refinement of powder neutron diffraction data, are provided for Bi1.8La0.2WO6 (L-Bi2WO6 type) and BiLaWO6, BiNdWO6, Bi0.7Yb1.3WO6 and Bi0.7Yb1.3WO6 (all H-Bi2WO6 type). Phase evolution within the solid solution Bi2-xLaxMoO6 has been re-examined, and a crossover from gamma(H)-Bi2MoO6 type to gamma-R2MoO6 type is observed at x similar to 1.2. A preliminary X-ray Rietveld refinement of the line phase BiNdMoO6 has confirmed the alpha-R2MoO6 type structure, with a possible partial ordering of Bi/Nd over the three crystallographically distinct R sites. (c) 2006 Elsevier Inc. All rights reserved.

Original language	English
Pages (from-to)	3437-3444
Number of pages	8
Journal	Journal of Solid State Chemistry
Volume	179
DOIs	https://doi.org/10.1016/j.jssc.2006.07.008
Publication status	Published - Nov 2006

Keywords

bismuth oxides
molybdates
tungstates
ferroelectric
neutron diffraction
BI2MOO6 CATALYST
TEMPERATURE
POLYMORPHS

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10.1016/j.jssc.2006.07.008

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@article{84b0eb9efdfb4dd88cabe28aaaf1f8c1,

title = "Phase relations and crystal structures in the systems (Bi,Ln)2WO(6) and (Bi,Ln)(2)MoO6 (Ln = lanthanide)",

abstract = "Several outstanding aspects of phase behaviour in the systems (Bi,Ln)(2)WO6 and (Bi,Ln)(2)MoO6 (Ln = lanthanide) have been clarified. Detailed crystal structures, from Rietveld refinement of powder neutron diffraction data, are provided for Bi1.8La0.2WO6 (L-Bi2WO6 type) and BiLaWO6, BiNdWO6, Bi0.7Yb1.3WO6 and Bi0.7Yb1.3WO6 (all H-Bi2WO6 type). Phase evolution within the solid solution Bi2-xLaxMoO6 has been re-examined, and a crossover from gamma(H)-Bi2MoO6 type to gamma-R2MoO6 type is observed at x similar to 1.2. A preliminary X-ray Rietveld refinement of the line phase BiNdMoO6 has confirmed the alpha-R2MoO6 type structure, with a possible partial ordering of Bi/Nd over the three crystallographically distinct R sites. (c) 2006 Elsevier Inc. All rights reserved.",

keywords = "bismuth oxides, molybdates, tungstates, ferroelectric, neutron diffraction, BI2MOO6 CATALYST, TEMPERATURE, POLYMORPHS",

author = "Berdonosov, {Peter S.} and Charkin, {Dmitri O.} and Knight, {Kevin S.} and Johnston, {Karen E.} and Goff, {Richard J.} and Dolgikh, {Valeriy A.} and Philip Lightfoot",

year = "2006",

month = nov,

doi = "10.1016/j.jssc.2006.07.008",

language = "English",

volume = "179",

pages = "3437--3444",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press/Elsevier ",

}

TY - JOUR

T1 - Phase relations and crystal structures in the systems (Bi,Ln)2WO(6) and (Bi,Ln)(2)MoO6 (Ln = lanthanide)

AU - Berdonosov, Peter S.

AU - Charkin, Dmitri O.

AU - Knight, Kevin S.

AU - Johnston, Karen E.

AU - Goff, Richard J.

AU - Dolgikh, Valeriy A.

AU - Lightfoot, Philip

PY - 2006/11

Y1 - 2006/11

N2 - Several outstanding aspects of phase behaviour in the systems (Bi,Ln)(2)WO6 and (Bi,Ln)(2)MoO6 (Ln = lanthanide) have been clarified. Detailed crystal structures, from Rietveld refinement of powder neutron diffraction data, are provided for Bi1.8La0.2WO6 (L-Bi2WO6 type) and BiLaWO6, BiNdWO6, Bi0.7Yb1.3WO6 and Bi0.7Yb1.3WO6 (all H-Bi2WO6 type). Phase evolution within the solid solution Bi2-xLaxMoO6 has been re-examined, and a crossover from gamma(H)-Bi2MoO6 type to gamma-R2MoO6 type is observed at x similar to 1.2. A preliminary X-ray Rietveld refinement of the line phase BiNdMoO6 has confirmed the alpha-R2MoO6 type structure, with a possible partial ordering of Bi/Nd over the three crystallographically distinct R sites. (c) 2006 Elsevier Inc. All rights reserved.

AB - Several outstanding aspects of phase behaviour in the systems (Bi,Ln)(2)WO6 and (Bi,Ln)(2)MoO6 (Ln = lanthanide) have been clarified. Detailed crystal structures, from Rietveld refinement of powder neutron diffraction data, are provided for Bi1.8La0.2WO6 (L-Bi2WO6 type) and BiLaWO6, BiNdWO6, Bi0.7Yb1.3WO6 and Bi0.7Yb1.3WO6 (all H-Bi2WO6 type). Phase evolution within the solid solution Bi2-xLaxMoO6 has been re-examined, and a crossover from gamma(H)-Bi2MoO6 type to gamma-R2MoO6 type is observed at x similar to 1.2. A preliminary X-ray Rietveld refinement of the line phase BiNdMoO6 has confirmed the alpha-R2MoO6 type structure, with a possible partial ordering of Bi/Nd over the three crystallographically distinct R sites. (c) 2006 Elsevier Inc. All rights reserved.

KW - bismuth oxides

KW - molybdates

KW - tungstates

KW - ferroelectric

KW - neutron diffraction

KW - BI2MOO6 CATALYST

KW - TEMPERATURE

KW - POLYMORPHS

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U2 - 10.1016/j.jssc.2006.07.008

DO - 10.1016/j.jssc.2006.07.008

M3 - Article

SN - 0022-4596

VL - 179

SP - 3437

EP - 3444

JO - Journal of Solid State Chemistry

JF - Journal of Solid State Chemistry

ER -

Phase relations and crystal structures in the systems (Bi,Ln)2WO(6) and (Bi,Ln)(2)MoO6 (Ln = lanthanide)

Abstract

Keywords

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epsrc ep/c008448/1: Novel Oxyfluoride Relaxor Ferroelectrics

A complementary study of perovskites: combining diffraction, solid-state NMR and first principles DFT calculations

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Phase relations and crystal structures in the systems (Bi,Ln)2WO(6) and (Bi,Ln)(2)MoO6 (Ln = lanthanide)

Abstract

Keywords

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epsrc ep/c008448/1: Novel Oxyfluoride Relaxor Ferroelectrics

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A complementary study of perovskites: combining diffraction, solid-state NMR and first principles DFT calculations

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