AustralieFrV1, Main, Exploration, bibRecord, 00AB51

Phase stability and non-stoichiometry in M-phase solid solutions in the system LiO0.5-NbO2.5-TiO2

Identifieur interne : 00AB51 ( Main/Exploration ); précédent : 00AB50; suivant : 00AB52

Phase stability and non-stoichiometry in M-phase solid solutions in the system LiO0.5-NbO2.5-TiO2

Auteurs : I. E. Grey [Australie] ; P. Bordet [France] ; C. Li [Australie] ; R. S. Roth [États-Unis]

Source :

Journal of solid state chemistry : (Print) [ 0022-4596 ] ; 2004.

RBID : Pascal:04-0413542

Descripteurs français

Pascal (Inist)
- Etude expérimentale, Stabilité phase, Diagramme phase, Non stoechiométrie, Trempe, Composition chimique, Lacune, Paramètre cristallin, Dépendance température, Joint phase, Solution solide, Lithium oxyde, Niobium oxyde, Titane oxyde, Système ternaire, Réseau rhomboédrique, Structure corindon, Système LiO0,5 NbO2,5 TiO2, Li Nb O Ti, 8130D, 6166F.

English descriptors

KwdEn :
- Chemical composition, Corundum structure, Experimental study, Lattice parameters, Lithium oxides, Niobium oxides, Nonstoichiometry, Phase boundaries, Phase diagrams, Phase stability, Quenching, Solid solutions, Temperature dependence, Ternary systems, Titanium oxides, Trigonal lattices, Vacancies.

Abstract

Phase relations at 1050°C have been determined for M-phase solid solutions in the LiO_0.5-NbO_2.5-TiO₂ ternary phase system by the quench method. Rietveld analysis has been used to help determine phase boundaries and to study structure composition relations. The M-phases have trigonal structures based on intergrowth of corundum-like layers, [Ti₂O₃]²⁺, with slabs of (N-1) layers of LiNbO₃-type parallel to (0001). Ideal compositions are defined along the pseudobinary join LiNbO₃-Li₄Ti₅O₁₂ by the homologous series formula Li_NNb_N-4Ti₅O_3N, N≥4. Homologues with N≤10 lie to the low-lithia side of the LiNbO₃-Li₄Ti₅O₁₂ join and show extended single-phase solid solution ranges separated by two-phase regions. The composition variations along the solid solutions are controlled by a major substitution mechanism, Li⁺ +3Nb⁵⁺ ↔4Ti⁴⁺, coupled with a minor substitution 4Li⁺ ↔ Ti⁴⁺ + 3□, where □=vacancy. The latter substitution results in increasing deviations from the stoichiometric compositions A_2N+1O_3N with increasing Ti substitution. The non-stoichiometry can be reduced by re-equilibration at lower temperatures. Expressions have been developed to describe the compositional changes along the solid solutions.

Affiliations:

Links toward previous steps (curation, corpus...)

to stream PascalFrancis, to step Corpus: 004D77
to stream PascalFrancis, to step Curation: 001337
to stream PascalFrancis, to step Checkpoint: 004A09
to stream Main, to step Merge: 00B836
to stream Main, to step Curation: 00AB51

Le document en format XML

<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Phase stability and non-stoichiometry in M-phase solid solutions in the system LiO<sub>0.5</sub>
-NbO<sub>2.5</sub>
-TiO<sub>2</sub>
</title>
<author><name sortKey="Grey, I E" sort="Grey, I E" uniqKey="Grey I" first="I. E." last="Grey">I. E. Grey</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>CSIRO Minerals, Box 312</s1>
<s2>Clayton South, Victoria 3168</s2>
<s3>AUS</s3>
<sZ>1 aut.</sZ>
<sZ>3 aut.</sZ>
</inist:fA14>
<country>Australie</country>
<wicri:noRegion>Clayton South, Victoria 3168</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Bordet, P" sort="Bordet, P" uniqKey="Bordet P" first="P." last="Bordet">P. Bordet</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CNRS Laboratoire de Cristallographie, BP 166</s1>
<s2>Grenoble 38042</s2>
<s3>FRA</s3>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>France</country>
<wicri:noRegion>38042</wicri:noRegion>
<placeName><settlement type="city">Grenoble</settlement>
<region type="region" nuts="2">Auvergne-Rhône-Alpes</region>
<region type="old region" nuts="2">Rhône-Alpes</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Li, C" sort="Li, C" uniqKey="Li C" first="C." last="Li">C. Li</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>CSIRO Minerals, Box 312</s1>
<s2>Clayton South, Victoria 3168</s2>
<s3>AUS</s3>
<sZ>1 aut.</sZ>
<sZ>3 aut.</sZ>
</inist:fA14>
<country>Australie</country>
<wicri:noRegion>Clayton South, Victoria 3168</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Roth, R S" sort="Roth, R S" uniqKey="Roth R" first="R. S." last="Roth">R. S. Roth</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>National Institute of Standards and Technology</s1>
<s2>Gaithersburg, MD 20899</s2>
<s3>USA</s3>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>États-Unis</country>
<wicri:noRegion>National Institute of Standards and Technology</wicri:noRegion>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">INIST</idno>
<idno type="inist">04-0413542</idno>
<date when="2004">2004</date>
<idno type="stanalyst">PASCAL 04-0413542 INIST</idno>
<idno type="RBID">Pascal:04-0413542</idno>
<idno type="wicri:Area/PascalFrancis/Corpus">004D77</idno>
<idno type="wicri:Area/PascalFrancis/Curation">001337</idno>
<idno type="wicri:Area/PascalFrancis/Checkpoint">004A09</idno>
<idno type="wicri:explorRef" wicri:stream="PascalFrancis" wicri:step="Checkpoint">004A09</idno>
<idno type="wicri:doubleKey">0022-4596:2004:Grey I:phase:stability:and</idno>
<idno type="wicri:Area/Main/Merge">00B836</idno>
<idno type="wicri:Area/Main/Curation">00AB51</idno>
<idno type="wicri:Area/Main/Exploration">00AB51</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Phase stability and non-stoichiometry in M-phase solid solutions in the system LiO<sub>0.5</sub>
-NbO<sub>2.5</sub>
-TiO<sub>2</sub>
</title>
<author><name sortKey="Grey, I E" sort="Grey, I E" uniqKey="Grey I" first="I. E." last="Grey">I. E. Grey</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>CSIRO Minerals, Box 312</s1>
<s2>Clayton South, Victoria 3168</s2>
<s3>AUS</s3>
<sZ>1 aut.</sZ>
<sZ>3 aut.</sZ>
</inist:fA14>
<country>Australie</country>
<wicri:noRegion>Clayton South, Victoria 3168</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Bordet, P" sort="Bordet, P" uniqKey="Bordet P" first="P." last="Bordet">P. Bordet</name>
<affiliation wicri:level="1"><inist:fA14 i1="02"><s1>CNRS Laboratoire de Cristallographie, BP 166</s1>
<s2>Grenoble 38042</s2>
<s3>FRA</s3>
<sZ>2 aut.</sZ>
</inist:fA14>
<country>France</country>
<wicri:noRegion>38042</wicri:noRegion>
<placeName><settlement type="city">Grenoble</settlement>
<region type="region" nuts="2">Auvergne-Rhône-Alpes</region>
<region type="old region" nuts="2">Rhône-Alpes</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Li, C" sort="Li, C" uniqKey="Li C" first="C." last="Li">C. Li</name>
<affiliation wicri:level="1"><inist:fA14 i1="01"><s1>CSIRO Minerals, Box 312</s1>
<s2>Clayton South, Victoria 3168</s2>
<s3>AUS</s3>
<sZ>1 aut.</sZ>
<sZ>3 aut.</sZ>
</inist:fA14>
<country>Australie</country>
<wicri:noRegion>Clayton South, Victoria 3168</wicri:noRegion>
</affiliation>
</author>
<author><name sortKey="Roth, R S" sort="Roth, R S" uniqKey="Roth R" first="R. S." last="Roth">R. S. Roth</name>
<affiliation wicri:level="1"><inist:fA14 i1="03"><s1>National Institute of Standards and Technology</s1>
<s2>Gaithersburg, MD 20899</s2>
<s3>USA</s3>
<sZ>4 aut.</sZ>
</inist:fA14>
<country>États-Unis</country>
<wicri:noRegion>National Institute of Standards and Technology</wicri:noRegion>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">Journal of solid state chemistry : (Print)</title>
<title level="j" type="abbreviated">J. solid state chem. : (Print)</title>
<idno type="ISSN">0022-4596</idno>
<imprint><date when="2004">2004</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">Journal of solid state chemistry : (Print)</title>
<title level="j" type="abbreviated">J. solid state chem. : (Print)</title>
<idno type="ISSN">0022-4596</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Chemical composition</term>
<term>Corundum structure</term>
<term>Experimental study</term>
<term>Lattice parameters</term>
<term>Lithium oxides</term>
<term>Niobium oxides</term>
<term>Nonstoichiometry</term>
<term>Phase boundaries</term>
<term>Phase diagrams</term>
<term>Phase stability</term>
<term>Quenching</term>
<term>Solid solutions</term>
<term>Temperature dependence</term>
<term>Ternary systems</term>
<term>Titanium oxides</term>
<term>Trigonal lattices</term>
<term>Vacancies</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Etude expérimentale</term>
<term>Stabilité phase</term>
<term>Diagramme phase</term>
<term>Non stoechiométrie</term>
<term>Trempe</term>
<term>Composition chimique</term>
<term>Lacune</term>
<term>Paramètre cristallin</term>
<term>Dépendance température</term>
<term>Joint phase</term>
<term>Solution solide</term>
<term>Lithium oxyde</term>
<term>Niobium oxyde</term>
<term>Titane oxyde</term>
<term>Système ternaire</term>
<term>Réseau rhomboédrique</term>
<term>Structure corindon</term>
<term>Système LiO0,5 NbO2,5 TiO2</term>
<term>Li Nb O Ti</term>
<term>8130D</term>
<term>6166F</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">Phase relations at 1050°C have been determined for M-phase solid solutions in the LiO<sub>0.5</sub>
-NbO<sub>2.5</sub>
-TiO<sub>2</sub>
 ternary phase system by the quench method. Rietveld analysis has been used to help determine phase boundaries and to study structure composition relations. The M-phases have trigonal structures based on intergrowth of corundum-like layers, [Ti<sub>2</sub>
O<sub>3</sub>
]<sup>2+</sup>
, with slabs of (N-1) layers of LiNbO<sub>3</sub>
-type parallel to (0001). Ideal compositions are defined along the pseudobinary join LiNbO<sub>3</sub>
-Li<sub>4</sub>
Ti<sub>5</sub>
O<sub>12</sub>
 by the homologous series formula Li<sub>N</sub>
Nb<sub>N-4</sub>
Ti<sub>5</sub>
O<sub>3N</sub>
, N≥4. Homologues with N≤10 lie to the low-lithia side of the LiNbO<sub>3</sub>
-Li<sub>4</sub>
Ti<sub>5</sub>
O<sub>12</sub>
 join and show extended single-phase solid solution ranges separated by two-phase regions. The composition variations along the solid solutions are controlled by a major substitution mechanism, Li<sup>+</sup>
 +3Nb<sup>5+</sup>
 ↔4Ti<sup>4+</sup>
, coupled with a minor substitution 4Li<sup>+</sup>
 ↔ Ti<sup>4+</sup>
 + 3□, where □=vacancy. The latter substitution results in increasing deviations from the stoichiometric compositions A<sub>2N+1</sub>
O<sub>3N</sub>
 with increasing Ti substitution. The non-stoichiometry can be reduced by re-equilibration at lower temperatures. Expressions have been developed to describe the compositional changes along the solid solutions.</div>
</front>
</TEI>
<affiliations><list><country><li>Australie</li>
<li>France</li>
<li>États-Unis</li>
</country>
<region><li>Auvergne-Rhône-Alpes</li>
<li>Rhône-Alpes</li>
</region>
<settlement><li>Grenoble</li>
</settlement>
</list>
<tree><country name="Australie"><noRegion><name sortKey="Grey, I E" sort="Grey, I E" uniqKey="Grey I" first="I. E." last="Grey">I. E. Grey</name>
</noRegion>
<name sortKey="Li, C" sort="Li, C" uniqKey="Li C" first="C." last="Li">C. Li</name>
</country>
<country name="France"><region name="Auvergne-Rhône-Alpes"><name sortKey="Bordet, P" sort="Bordet, P" uniqKey="Bordet P" first="P." last="Bordet">P. Bordet</name>
</region>
</country>
<country name="États-Unis"><noRegion><name sortKey="Roth, R S" sort="Roth, R S" uniqKey="Roth R" first="R. S." last="Roth">R. S. Roth</name>
</noRegion>
</country>
</tree>
</affiliations>
</record>

Pour manipuler ce document sous Unix (Dilib)

EXPLOR_STEP=$WICRI_ROOT/Wicri/Asie/explor/AustralieFrV1/Data/Main/Exploration

HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 00AB51 | SxmlIndent | more

HfdSelect -h $EXPLOR_AREA/Data/Main/Exploration/biblio.hfd -nk 00AB51 | SxmlIndent | more

Pour mettre un lien sur cette page dans le réseau Wicri

{{Explor lien
   |wiki=    Wicri/Asie
   |area=    AustralieFrV1
   |flux=    Main
   |étape=   Exploration
   |type=    RBID
   |clé=     Pascal:04-0413542
   |texte=   Phase stability and non-stoichiometry in M-phase solid solutions in the system LiO0.5-NbO2.5-TiO2
}}

This area was generated with Dilib version V0.6.33.
Data generation: Tue Dec 5 10:43:12 2017. Site generation: Tue Mar 5 14:07:20 2024

	Serveur d'exploration sur les relations entre la France et l'Australie
	Attention, ce site est en cours de développement ! Attention, site généré par des moyens informatiques à partir de corpus bruts. Les informations ne sont donc pas validées.

Serveur d'exploration sur les relations entre la France et l'Australie

Phase stability and non-stoichiometry in M-phase solid solutions in the system LiO0.5-NbO2.5-TiO2

Phase stability and non-stoichiometry in M-phase solid solutions in the system LiO0.5-NbO2.5-TiO2

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri