Skip navigation
Skip navigation

Apatite germanates doped with tungsten: Synthesis, structure, and conductivity

White, Timothy; Orera, A; Baikie, Tom; Kendrick, Emma; Shin, J F; Pramana, S; Smith, Ron; Sanjuan, M. L.; Slater, Peter R

Description

High oxygen content apatite germanates, La10Ge6-xWxO27+x, have been prepared by doping on the Ge site with W. In addition to increasing the oxygen content, this doping strategy is shown to result in stabilisation of the hexagonal lattice, and yield high conductivities. Structural studies of La10Ge5.5W0.5O27.5 show that the interstitial oxygen sites are associated to a different degree with the Ge/WO4 tetrahedra, leading to five coordinate Ge/W and significant disorder for the oxygen sites...[Show more]

dc.contributor.authorWhite, Timothy
dc.contributor.authorOrera, A
dc.contributor.authorBaikie, Tom
dc.contributor.authorKendrick, Emma
dc.contributor.authorShin, J F
dc.contributor.authorPramana, S
dc.contributor.authorSmith, Ron
dc.contributor.authorSanjuan, M. L.
dc.contributor.authorSlater, Peter R
dc.date.accessioned2015-12-10T23:31:26Z
dc.identifier.issn1477-9226
dc.identifier.urihttp://hdl.handle.net/1885/68625
dc.description.abstractHigh oxygen content apatite germanates, La10Ge6-xWxO27+x, have been prepared by doping on the Ge site with W. In addition to increasing the oxygen content, this doping strategy is shown to result in stabilisation of the hexagonal lattice, and yield high conductivities. Structural studies of La10Ge5.5W0.5O27.5 show that the interstitial oxygen sites are associated to a different degree with the Ge/WO4 tetrahedra, leading to five coordinate Ge/W and significant disorder for the oxygen sites associated with these units. Raman spectroscopy studies suggest that in the case of the WO5 units, the interstitial oxygen is more tightly bonded and therefore not as mobile as in the case of the GeO5 units, thus not contributing significantly to the conduction process.
dc.publisherRoyal Society of Chemistry
dc.sourceDalton Transactions
dc.subjectKeywords: Conduction process; Doping strategies; Germanates; Hexagonal lattice; High conductivity; Interstitial oxygen; Interstitial oxygen site; Oxygen content; Oxygen site; Stabilisation; Structural studies; Apatite; Doping (additives); Germanium; Phosphate miner
dc.titleApatite germanates doped with tungsten: Synthesis, structure, and conductivity
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume40
dc.date.issued2011
local.identifier.absfor030399 - Macromolecular and Materials Chemistry not elsewhere classified
local.identifier.ariespublicationf2965xPUB1779
local.type.statusPublished Version
local.contributor.affiliationWhite, Timothy, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationOrera, A, Universidad de Zaragoza
local.contributor.affiliationBaikie, Tom, Nanyang Technological University
local.contributor.affiliationKendrick, Emma, University of Surrey
local.contributor.affiliationShin, J F, University of Birmingham
local.contributor.affiliationPramana, S, Universidad de Zaragoza
local.contributor.affiliationSmith, Ron, Rutherford Appleton Laboratory
local.contributor.affiliationSanjuan, M. L., Universidad de Zaragoza
local.contributor.affiliationSlater, Peter R, University of Birmingham
local.description.embargo2037-12-31
local.bibliographicCitation.issue15
local.bibliographicCitation.startpage3903
local.bibliographicCitation.lastpage3908
local.identifier.doi10.1039/c0dt00690d
dc.date.updated2016-02-24T08:17:10Z
local.identifier.scopusID2-s2.0-79953276116
local.identifier.thomsonID000288961100018
CollectionsANU Research Publications

Download

File Description SizeFormat Image
01_White_Apatite_germanates_doped_with_2011.pdf526.26 kBAdobe PDF    Request a copy


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  20 July 2017/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator