Stability of Cu2Ln2O5 compounds: Comparison, assessment and systematics
Identifieur interne : 000E95 ( Pascal/Corpus ); précédent : 000E94; suivant : 000E96Stability of Cu2Ln2O5 compounds: Comparison, assessment and systematics
Auteurs : K. P. Jayadevan ; K. T. JacobSource :
- High-temperature materials and processes [ 0334-6455 ] ; 2000.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
Phase diagram studies show that at ambient pressure only one ternary oxide, Cu2Ln2O5, is stable in the ternary systems Cu-Ln-O (Ln = Tb, Dy, Ho, Er, Tm, Yb, Lu) at high temperatures. The crystal structure of Cu2Ln2O5 can be described as a zig-zag arrangement of one-dimensional Cu2O5 chains parallel to the a-axis with Ln atoms occupying distorted octahedral sites between these chains. Four sets of emf measurements on Gibbs energy of formation of Cu2Ln2O5 (Ln = Tb, Dy, Ho, Er, Tm, Yb, Lu; Y) from component binary oxides and one set of high-temperature solution calorimetric data on enthalpy of formation have been reported in the literature. Except for Cu2Y2O5, the measured values for the Gibbs energies of formation of all other Cu2Ln2O5 compounds fall in a narrow band (±1 kJ mol-1) and indicate a regular increase in stability with decreasing ionic radius of the lanthanide ion. The values for the second law enthalpy of formation, derived from the temperature dependence of emf obtained in different studies, show larger differences, as high as 25 kJ mol-1 for Cu2Tm2O5. Though associated with an uncertainty of ±4 kJ mol-1, the calorimetric measurements help to identify the best set of emf data. The trends in thermodynamic data correlate well with the global instability index (GII) based on the overall deviation from the valence sum rule. Low values for the index calculated from crystallographic information indicate higher stability. Higher values are indicative of the larger stress in the structure.
Notice en format standard (ISO 2709)
Pour connaître la documentation sur le format Inist Standard.
pA |
|
---|
Format Inist (serveur)
NO : | PASCAL 01-0044104 INIST |
---|---|
ET : | Stability of Cu2Ln2O5 compounds: Comparison, assessment and systematics |
AU : | JAYADEVAN (K. P.); JACOB (K. T.) |
AF : | Materials Research Center and Department of Metallurgy, Indian Institute of Science/Bangalore 560 012/Inde (1 aut., 2 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | High-temperature materials and processes; ISSN 0334-6455; Coden HTMPEF; Israël; Da. 2000; Vol. 19; No. 6; Pp. 389-397; Bibl. 24 ref. |
LA : | Anglais |
EA : | Phase diagram studies show that at ambient pressure only one ternary oxide, Cu2Ln2O5, is stable in the ternary systems Cu-Ln-O (Ln = Tb, Dy, Ho, Er, Tm, Yb, Lu) at high temperatures. The crystal structure of Cu2Ln2O5 can be described as a zig-zag arrangement of one-dimensional Cu2O5 chains parallel to the a-axis with Ln atoms occupying distorted octahedral sites between these chains. Four sets of emf measurements on Gibbs energy of formation of Cu2Ln2O5 (Ln = Tb, Dy, Ho, Er, Tm, Yb, Lu; Y) from component binary oxides and one set of high-temperature solution calorimetric data on enthalpy of formation have been reported in the literature. Except for Cu2Y2O5, the measured values for the Gibbs energies of formation of all other Cu2Ln2O5 compounds fall in a narrow band (±1 kJ mol-1) and indicate a regular increase in stability with decreasing ionic radius of the lanthanide ion. The values for the second law enthalpy of formation, derived from the temperature dependence of emf obtained in different studies, show larger differences, as high as 25 kJ mol-1 for Cu2Tm2O5. Though associated with an uncertainty of ±4 kJ mol-1, the calorimetric measurements help to identify the best set of emf data. The trends in thermodynamic data correlate well with the global instability index (GII) based on the overall deviation from the valence sum rule. Low values for the index calculated from crystallographic information indicate higher stability. Higher values are indicative of the larger stress in the structure. |
CC : | 001B80A30D |
FD : | Stabilité thermique; Propriété thermique; Diagramme phase; Cuivre; Oxygène; Terbium; Système ternaire; Dysprosium; Holmium; Erbium; Structure cristalline; Maille primitive; Etude expérimentale; Thulium; Ytterbium; Système Cu O Tb; Système Cu Dy O; 8130D |
ED : | Thermal stability; Thermal properties; Phase diagrams; Copper; Oxygen; Terbium; Ternary systems; Dysprosium; Holmium; Erbium; Crystal structure; Primitive cell; Experimental study; Thulium; Ytterbium |
SD : | Celda primitiva |
LO : | INIST-16238.354000093423700030 |
ID : | 01-0044104 |
Links to Exploration step
Pascal:01-0044104Le document en format XML
<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Stability of Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
compounds: Comparison, assessment and systematics</title>
<author><name sortKey="Jayadevan, K P" sort="Jayadevan, K P" uniqKey="Jayadevan K" first="K. P." last="Jayadevan">K. P. Jayadevan</name>
<affiliation><inist:fA14 i1="01"><s1>Materials Research Center and Department of Metallurgy, Indian Institute of Science</s1>
<s2>Bangalore 560 012</s2>
<s3>IND</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
</affiliation>
</author>
<author><name sortKey="Jacob, K T" sort="Jacob, K T" uniqKey="Jacob K" first="K. T." last="Jacob">K. T. Jacob</name>
<affiliation><inist:fA14 i1="01"><s1>Materials Research Center and Department of Metallurgy, Indian Institute of Science</s1>
<s2>Bangalore 560 012</s2>
<s3>IND</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
</affiliation>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">INIST</idno>
<idno type="inist">01-0044104</idno>
<date when="2000">2000</date>
<idno type="stanalyst">PASCAL 01-0044104 INIST</idno>
<idno type="RBID">Pascal:01-0044104</idno>
<idno type="wicri:Area/Pascal/Corpus">000E95</idno>
</publicationStmt>
<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Stability of Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
compounds: Comparison, assessment and systematics</title>
<author><name sortKey="Jayadevan, K P" sort="Jayadevan, K P" uniqKey="Jayadevan K" first="K. P." last="Jayadevan">K. P. Jayadevan</name>
<affiliation><inist:fA14 i1="01"><s1>Materials Research Center and Department of Metallurgy, Indian Institute of Science</s1>
<s2>Bangalore 560 012</s2>
<s3>IND</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
</affiliation>
</author>
<author><name sortKey="Jacob, K T" sort="Jacob, K T" uniqKey="Jacob K" first="K. T." last="Jacob">K. T. Jacob</name>
<affiliation><inist:fA14 i1="01"><s1>Materials Research Center and Department of Metallurgy, Indian Institute of Science</s1>
<s2>Bangalore 560 012</s2>
<s3>IND</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</inist:fA14>
</affiliation>
</author>
</analytic>
<series><title level="j" type="main">High-temperature materials and processes</title>
<title level="j" type="abbreviated">High temp. mater. progresses</title>
<idno type="ISSN">0334-6455</idno>
<imprint><date when="2000">2000</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
<seriesStmt><title level="j" type="main">High-temperature materials and processes</title>
<title level="j" type="abbreviated">High temp. mater. progresses</title>
<idno type="ISSN">0334-6455</idno>
</seriesStmt>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Copper</term>
<term>Crystal structure</term>
<term>Dysprosium</term>
<term>Erbium</term>
<term>Experimental study</term>
<term>Holmium</term>
<term>Oxygen</term>
<term>Phase diagrams</term>
<term>Primitive cell</term>
<term>Terbium</term>
<term>Ternary systems</term>
<term>Thermal properties</term>
<term>Thermal stability</term>
<term>Thulium</term>
<term>Ytterbium</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Stabilité thermique</term>
<term>Propriété thermique</term>
<term>Diagramme phase</term>
<term>Cuivre</term>
<term>Oxygène</term>
<term>Terbium</term>
<term>Système ternaire</term>
<term>Dysprosium</term>
<term>Holmium</term>
<term>Erbium</term>
<term>Structure cristalline</term>
<term>Maille primitive</term>
<term>Etude expérimentale</term>
<term>Thulium</term>
<term>Ytterbium</term>
<term>Système Cu O Tb</term>
<term>Système Cu Dy O</term>
<term>8130D</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en">Phase diagram studies show that at ambient pressure only one ternary oxide, Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
, is stable in the ternary systems Cu-Ln-O (Ln = Tb, Dy, Ho, Er, Tm, Yb, Lu) at high temperatures. The crystal structure of Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
can be described as a zig-zag arrangement of one-dimensional Cu<sub>2</sub>
O<sub>5</sub>
chains parallel to the a-axis with Ln atoms occupying distorted octahedral sites between these chains. Four sets of emf measurements on Gibbs energy of formation of Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
(Ln = Tb, Dy, Ho, Er, Tm, Yb, Lu; Y) from component binary oxides and one set of high-temperature solution calorimetric data on enthalpy of formation have been reported in the literature. Except for Cu<sub>2</sub>
Y<sub>2</sub>
O<sub>5</sub>
, the measured values for the Gibbs energies of formation of all other Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
compounds fall in a narrow band (±1 kJ mol<sup>-1</sup>
) and indicate a regular increase in stability with decreasing ionic radius of the lanthanide ion. The values for the second law enthalpy of formation, derived from the temperature dependence of emf obtained in different studies, show larger differences, as high as 25 kJ mol<sup>-1</sup>
for Cu<sub>2</sub>
Tm<sub>2</sub>
O<sub>5</sub>
. Though associated with an uncertainty of ±4 kJ mol<sup>-1</sup>
, the calorimetric measurements help to identify the best set of emf data. The trends in thermodynamic data correlate well with the global instability index (GII) based on the overall deviation from the valence sum rule. Low values for the index calculated from crystallographic information indicate higher stability. Higher values are indicative of the larger stress in the structure.</div>
</front>
</TEI>
<inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0334-6455</s0>
</fA01>
<fA02 i1="01"><s0>HTMPEF</s0>
</fA02>
<fA03 i2="1"><s0>High temp. mater. progresses</s0>
</fA03>
<fA05><s2>19</s2>
</fA05>
<fA06><s2>6</s2>
</fA06>
<fA08 i1="01" i2="1" l="ENG"><s1>Stability of Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
compounds: Comparison, assessment and systematics</s1>
</fA08>
<fA11 i1="01" i2="1"><s1>JAYADEVAN (K. P.)</s1>
</fA11>
<fA11 i1="02" i2="1"><s1>JACOB (K. T.)</s1>
</fA11>
<fA14 i1="01"><s1>Materials Research Center and Department of Metallurgy, Indian Institute of Science</s1>
<s2>Bangalore 560 012</s2>
<s3>IND</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
</fA14>
<fA20><s1>389-397</s1>
</fA20>
<fA21><s1>2000</s1>
</fA21>
<fA23 i1="01"><s0>ENG</s0>
</fA23>
<fA43 i1="01"><s1>INIST</s1>
<s2>16238</s2>
<s5>354000093423700030</s5>
</fA43>
<fA44><s0>0000</s0>
<s1>© 2001 INIST-CNRS. All rights reserved.</s1>
</fA44>
<fA45><s0>24 ref.</s0>
</fA45>
<fA47 i1="01" i2="1"><s0>01-0044104</s0>
</fA47>
<fA60><s1>P</s1>
</fA60>
<fA61><s0>A</s0>
</fA61>
<fA64 i1="01" i2="1"><s0>High-temperature materials and processes</s0>
</fA64>
<fA66 i1="01"><s0>ISR</s0>
</fA66>
<fC01 i1="01" l="ENG"><s0>Phase diagram studies show that at ambient pressure only one ternary oxide, Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
, is stable in the ternary systems Cu-Ln-O (Ln = Tb, Dy, Ho, Er, Tm, Yb, Lu) at high temperatures. The crystal structure of Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
can be described as a zig-zag arrangement of one-dimensional Cu<sub>2</sub>
O<sub>5</sub>
chains parallel to the a-axis with Ln atoms occupying distorted octahedral sites between these chains. Four sets of emf measurements on Gibbs energy of formation of Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
(Ln = Tb, Dy, Ho, Er, Tm, Yb, Lu; Y) from component binary oxides and one set of high-temperature solution calorimetric data on enthalpy of formation have been reported in the literature. Except for Cu<sub>2</sub>
Y<sub>2</sub>
O<sub>5</sub>
, the measured values for the Gibbs energies of formation of all other Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
compounds fall in a narrow band (±1 kJ mol<sup>-1</sup>
) and indicate a regular increase in stability with decreasing ionic radius of the lanthanide ion. The values for the second law enthalpy of formation, derived from the temperature dependence of emf obtained in different studies, show larger differences, as high as 25 kJ mol<sup>-1</sup>
for Cu<sub>2</sub>
Tm<sub>2</sub>
O<sub>5</sub>
. Though associated with an uncertainty of ±4 kJ mol<sup>-1</sup>
, the calorimetric measurements help to identify the best set of emf data. The trends in thermodynamic data correlate well with the global instability index (GII) based on the overall deviation from the valence sum rule. Low values for the index calculated from crystallographic information indicate higher stability. Higher values are indicative of the larger stress in the structure.</s0>
</fC01>
<fC02 i1="01" i2="3"><s0>001B80A30D</s0>
</fC02>
<fC03 i1="01" i2="3" l="FRE"><s0>Stabilité thermique</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="3" l="ENG"><s0>Thermal stability</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="3" l="FRE"><s0>Propriété thermique</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="3" l="ENG"><s0>Thermal properties</s0>
<s5>02</s5>
</fC03>
<fC03 i1="03" i2="3" l="FRE"><s0>Diagramme phase</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="3" l="ENG"><s0>Phase diagrams</s0>
<s5>03</s5>
</fC03>
<fC03 i1="04" i2="3" l="FRE"><s0>Cuivre</s0>
<s2>NC</s2>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="3" l="ENG"><s0>Copper</s0>
<s2>NC</s2>
<s5>04</s5>
</fC03>
<fC03 i1="05" i2="3" l="FRE"><s0>Oxygène</s0>
<s2>NC</s2>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="3" l="ENG"><s0>Oxygen</s0>
<s2>NC</s2>
<s5>05</s5>
</fC03>
<fC03 i1="06" i2="3" l="FRE"><s0>Terbium</s0>
<s2>NC</s2>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="3" l="ENG"><s0>Terbium</s0>
<s2>NC</s2>
<s5>06</s5>
</fC03>
<fC03 i1="07" i2="3" l="FRE"><s0>Système ternaire</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="3" l="ENG"><s0>Ternary systems</s0>
<s5>07</s5>
</fC03>
<fC03 i1="08" i2="3" l="FRE"><s0>Dysprosium</s0>
<s2>NC</s2>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="3" l="ENG"><s0>Dysprosium</s0>
<s2>NC</s2>
<s5>08</s5>
</fC03>
<fC03 i1="09" i2="3" l="FRE"><s0>Holmium</s0>
<s2>NC</s2>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="3" l="ENG"><s0>Holmium</s0>
<s2>NC</s2>
<s5>09</s5>
</fC03>
<fC03 i1="10" i2="3" l="FRE"><s0>Erbium</s0>
<s2>NC</s2>
<s5>10</s5>
</fC03>
<fC03 i1="10" i2="3" l="ENG"><s0>Erbium</s0>
<s2>NC</s2>
<s5>10</s5>
</fC03>
<fC03 i1="11" i2="3" l="FRE"><s0>Structure cristalline</s0>
<s5>11</s5>
</fC03>
<fC03 i1="11" i2="3" l="ENG"><s0>Crystal structure</s0>
<s5>11</s5>
</fC03>
<fC03 i1="12" i2="X" l="FRE"><s0>Maille primitive</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="ENG"><s0>Primitive cell</s0>
<s5>12</s5>
</fC03>
<fC03 i1="12" i2="X" l="SPA"><s0>Celda primitiva</s0>
<s5>12</s5>
</fC03>
<fC03 i1="13" i2="3" l="FRE"><s0>Etude expérimentale</s0>
<s5>13</s5>
</fC03>
<fC03 i1="13" i2="3" l="ENG"><s0>Experimental study</s0>
<s5>13</s5>
</fC03>
<fC03 i1="14" i2="3" l="FRE"><s0>Thulium</s0>
<s2>NC</s2>
<s5>23</s5>
</fC03>
<fC03 i1="14" i2="3" l="ENG"><s0>Thulium</s0>
<s2>NC</s2>
<s5>23</s5>
</fC03>
<fC03 i1="15" i2="3" l="FRE"><s0>Ytterbium</s0>
<s2>NC</s2>
<s5>24</s5>
</fC03>
<fC03 i1="15" i2="3" l="ENG"><s0>Ytterbium</s0>
<s2>NC</s2>
<s5>24</s5>
</fC03>
<fC03 i1="16" i2="3" l="FRE"><s0>Système Cu O Tb</s0>
<s2>NK</s2>
<s4>INC</s4>
<s5>32</s5>
</fC03>
<fC03 i1="17" i2="3" l="FRE"><s0>Système Cu Dy O</s0>
<s2>NK</s2>
<s4>INC</s4>
<s5>33</s5>
</fC03>
<fC03 i1="18" i2="3" l="FRE"><s0>8130D</s0>
<s2>PAC</s2>
<s4>INC</s4>
<s5>95</s5>
</fC03>
<fN21><s1>029</s1>
</fN21>
</pA>
</standard>
<server><NO>PASCAL 01-0044104 INIST</NO>
<ET>Stability of Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
compounds: Comparison, assessment and systematics</ET>
<AU>JAYADEVAN (K. P.); JACOB (K. T.)</AU>
<AF>Materials Research Center and Department of Metallurgy, Indian Institute of Science/Bangalore 560 012/Inde (1 aut., 2 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>High-temperature materials and processes; ISSN 0334-6455; Coden HTMPEF; Israël; Da. 2000; Vol. 19; No. 6; Pp. 389-397; Bibl. 24 ref.</SO>
<LA>Anglais</LA>
<EA>Phase diagram studies show that at ambient pressure only one ternary oxide, Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
, is stable in the ternary systems Cu-Ln-O (Ln = Tb, Dy, Ho, Er, Tm, Yb, Lu) at high temperatures. The crystal structure of Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
can be described as a zig-zag arrangement of one-dimensional Cu<sub>2</sub>
O<sub>5</sub>
chains parallel to the a-axis with Ln atoms occupying distorted octahedral sites between these chains. Four sets of emf measurements on Gibbs energy of formation of Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
(Ln = Tb, Dy, Ho, Er, Tm, Yb, Lu; Y) from component binary oxides and one set of high-temperature solution calorimetric data on enthalpy of formation have been reported in the literature. Except for Cu<sub>2</sub>
Y<sub>2</sub>
O<sub>5</sub>
, the measured values for the Gibbs energies of formation of all other Cu<sub>2</sub>
Ln<sub>2</sub>
O<sub>5</sub>
compounds fall in a narrow band (±1 kJ mol<sup>-1</sup>
) and indicate a regular increase in stability with decreasing ionic radius of the lanthanide ion. The values for the second law enthalpy of formation, derived from the temperature dependence of emf obtained in different studies, show larger differences, as high as 25 kJ mol<sup>-1</sup>
for Cu<sub>2</sub>
Tm<sub>2</sub>
O<sub>5</sub>
. Though associated with an uncertainty of ±4 kJ mol<sup>-1</sup>
, the calorimetric measurements help to identify the best set of emf data. The trends in thermodynamic data correlate well with the global instability index (GII) based on the overall deviation from the valence sum rule. Low values for the index calculated from crystallographic information indicate higher stability. Higher values are indicative of the larger stress in the structure.</EA>
<CC>001B80A30D</CC>
<FD>Stabilité thermique; Propriété thermique; Diagramme phase; Cuivre; Oxygène; Terbium; Système ternaire; Dysprosium; Holmium; Erbium; Structure cristalline; Maille primitive; Etude expérimentale; Thulium; Ytterbium; Système Cu O Tb; Système Cu Dy O; 8130D</FD>
<ED>Thermal stability; Thermal properties; Phase diagrams; Copper; Oxygen; Terbium; Ternary systems; Dysprosium; Holmium; Erbium; Crystal structure; Primitive cell; Experimental study; Thulium; Ytterbium</ED>
<SD>Celda primitiva</SD>
<LO>INIST-16238.354000093423700030</LO>
<ID>01-0044104</ID>
</server>
</inist>
</record>
Pour manipuler ce document sous Unix (Dilib)
EXPLOR_STEP=$WICRI_ROOT/Wicri/Terre/explor/ThuliumV1/Data/Pascal/Corpus
HfdSelect -h $EXPLOR_STEP/biblio.hfd -nk 000E95 | SxmlIndent | more
Ou
HfdSelect -h $EXPLOR_AREA/Data/Pascal/Corpus/biblio.hfd -nk 000E95 | SxmlIndent | more
Pour mettre un lien sur cette page dans le réseau Wicri
{{Explor lien |wiki= Wicri/Terre |area= ThuliumV1 |flux= Pascal |étape= Corpus |type= RBID |clé= Pascal:01-0044104 |texte= Stability of Cu2Ln2O5 compounds: Comparison, assessment and systematics }}
![]() | This area was generated with Dilib version V0.6.21. | ![]() |