Raman study of LiTaO3-related non-stoichiometric solid solutions isolated inside the ternary systems Li2O-Ta2O5-(M'O)2 with M' = Mn, Co
Identifieur interne : 000108 ( PascalFrancis/Corpus ); précédent : 000107; suivant : 000109Raman study of LiTaO3-related non-stoichiometric solid solutions isolated inside the ternary systems Li2O-Ta2O5-(M'O)2 with M' = Mn, Co
Auteurs : A. Assani ; El. M. Lotfi ; P. Bourson ; M. Aillerie ; B. Lahbabi ; M. Zriouil ; B. ElouadiSource :
- The Journal of physics and chemistry of solids [ 0022-3697 ] ; 2009.
Descripteurs français
- Pascal (Inist)
English descriptors
- KwdEn :
Abstract
We have characterized by Raman spectroscopy the disorder and the local modifications of cation environment in the lithium tantalate structure resulting from the incorporation of bivalent cations Co2+ and Mn2+ as potential substitutes for Li and/or Ta ions. Frequency and damping of the E(TO1), E(T06) and E(TO8) phonon modes of ceramic powders are studied along seven lines in the ternary phase diagrams Li2O-Ta2O5-(M'O)2 with M' = Mn and Co, and compared to those of the pure stoichiometric LiTaO3. Raman spectroscopy is found to be very sensitive to the substitution ions and defects generated in the lattice vibration. Dopants occupy primarily the Li site in the region of lithium oxide excess. The site of Ta becomes progressively implicated in the substitution process when the concentration of dopant increases. In the Li-poor region of the ternary-phase diagram, corresponding to under- stoichiometric compositions, we retain the charge compensation mechanism involving both Li and Ta site according to: 3Li++Ta5+→4M'2+ with M'2+ = Mn2+ or Co2+.
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NO : | PASCAL 09-0307143 INIST |
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ET : | Raman study of LiTaO3-related non-stoichiometric solid solutions isolated inside the ternary systems Li2O-Ta2O5-(M'O)2 with M' = Mn, Co |
AU : | ASSANI (A.); LOTFI (El. M.); BOURSON (P.); AILLERIE (M.); LAHBABI (B.); ZRIOUIL (M.); ELOUADI (B.) |
AF : | Laboratoire de Chimie du Solide Appliquée, LAF no. 501 Département de Chimie, Faculté des Sciences, Avenue Ibn Battouta, BP 1014/Rabat/Maroc (1 aut., 2 aut., 5 aut., 6 aut.); Département Génie Mécanique, ENSET, B.P.: 6207, Rabat Instituts/Rabat/Maroc (2 aut.); Laboratoire Matériaux Optiques, Photonique et Systèmes, CNRS UMR 7132, Université Paul Verlaine de Metz-Supelec, 2 rue E. Belin/57070 Metz/France (3 aut., 4 aut.); Laboratoire d'Elaboration Analyse Chimique et Ingénierie des Matériaux, Université de La Rochelle, Avenue Michel Crépeau/17042 La Rochelle/France (7 aut.) |
DT : | Publication en série; Niveau analytique |
SO : | The Journal of physics and chemistry of solids; ISSN 0022-3697; Royaume-Uni; Da. 2009; Vol. 70; No. 3-4; Pp. 755-764; Bibl. 34 ref. |
LA : | Anglais |
EA : | We have characterized by Raman spectroscopy the disorder and the local modifications of cation environment in the lithium tantalate structure resulting from the incorporation of bivalent cations Co2+ and Mn2+ as potential substitutes for Li and/or Ta ions. Frequency and damping of the E(TO1), E(T06) and E(TO8) phonon modes of ceramic powders are studied along seven lines in the ternary phase diagrams Li2O-Ta2O5-(M'O)2 with M' = Mn and Co, and compared to those of the pure stoichiometric LiTaO3. Raman spectroscopy is found to be very sensitive to the substitution ions and defects generated in the lattice vibration. Dopants occupy primarily the Li site in the region of lithium oxide excess. The site of Ta becomes progressively implicated in the substitution process when the concentration of dopant increases. In the Li-poor region of the ternary-phase diagram, corresponding to under- stoichiometric compositions, we retain the charge compensation mechanism involving both Li and Ta site according to: 3Li++Ta5+→4M'2+ with M'2+ = Mn2+ or Co2+. |
CC : | 001B60C20D |
FD : | Addition manganèse; Spectre Raman; Addition cobalt; Mode phonon; Diagramme phase; Substitution ion; Site impureté; Mode vibration; Dopage; Concentration impureté; Compensation charge; Tantalate de lithium |
ED : | Manganese additions; Raman spectra; Cobalt additions; Phonon mode; Phase diagrams; Ion substitution; Impurity site; Vibrational modes; Doping; Impurity density; Charge compensation; Lithium tantalates |
SD : | Modo fonón; Sustitución ión; Sitio impureza; Doping; Concentración impureza |
LO : | INIST-8204.354000188241520450 |
ID : | 09-0307143 |
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Pascal:09-0307143Le document en format XML
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-related non-stoichiometric solid solutions isolated inside the ternary systems Li<sub>2</sub>
O-Ta<sub>2</sub>
O<sub>5</sub>
-(M'O)<sub>2</sub>
with M' = Mn, Co</title>
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<sourceDesc><biblStruct><analytic><title xml:lang="en" level="a">Raman study of LiTaO<sub>3</sub>
-related non-stoichiometric solid solutions isolated inside the ternary systems Li<sub>2</sub>
O-Ta<sub>2</sub>
O<sub>5</sub>
-(M'O)<sub>2</sub>
with M' = Mn, Co</title>
<author><name sortKey="Assani, A" sort="Assani, A" uniqKey="Assani A" first="A." last="Assani">A. Assani</name>
<affiliation><inist:fA14 i1="01"><s1>Laboratoire de Chimie du Solide Appliquée, LAF no. 501 Département de Chimie, Faculté des Sciences, Avenue Ibn Battouta, BP 1014</s1>
<s2>Rabat</s2>
<s3>MAR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
</inist:fA14>
</affiliation>
</author>
<author><name sortKey="Lotfi, El M" sort="Lotfi, El M" uniqKey="Lotfi E" first="El. M." last="Lotfi">El. M. Lotfi</name>
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<s3>MAR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
</inist:fA14>
</affiliation>
<affiliation><inist:fA14 i1="02"><s1>Département Génie Mécanique, ENSET, B.P.: 6207, Rabat Instituts</s1>
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<sZ>2 aut.</sZ>
</inist:fA14>
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<author><name sortKey="Bourson, P" sort="Bourson, P" uniqKey="Bourson P" first="P." last="Bourson">P. Bourson</name>
<affiliation><inist:fA14 i1="03"><s1>Laboratoire Matériaux Optiques, Photonique et Systèmes, CNRS UMR 7132, Université Paul Verlaine de Metz-Supelec, 2 rue E. Belin</s1>
<s2>57070 Metz</s2>
<s3>FRA</s3>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
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<author><name sortKey="Aillerie, M" sort="Aillerie, M" uniqKey="Aillerie M" first="M." last="Aillerie">M. Aillerie</name>
<affiliation><inist:fA14 i1="03"><s1>Laboratoire Matériaux Optiques, Photonique et Systèmes, CNRS UMR 7132, Université Paul Verlaine de Metz-Supelec, 2 rue E. Belin</s1>
<s2>57070 Metz</s2>
<s3>FRA</s3>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</inist:fA14>
</affiliation>
</author>
<author><name sortKey="Lahbabi, B" sort="Lahbabi, B" uniqKey="Lahbabi B" first="B." last="Lahbabi">B. Lahbabi</name>
<affiliation><inist:fA14 i1="01"><s1>Laboratoire de Chimie du Solide Appliquée, LAF no. 501 Département de Chimie, Faculté des Sciences, Avenue Ibn Battouta, BP 1014</s1>
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<s3>MAR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
</inist:fA14>
</affiliation>
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<author><name sortKey="Zriouil, M" sort="Zriouil, M" uniqKey="Zriouil M" first="M." last="Zriouil">M. Zriouil</name>
<affiliation><inist:fA14 i1="01"><s1>Laboratoire de Chimie du Solide Appliquée, LAF no. 501 Département de Chimie, Faculté des Sciences, Avenue Ibn Battouta, BP 1014</s1>
<s2>Rabat</s2>
<s3>MAR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
</inist:fA14>
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<author><name sortKey="Elouadi, B" sort="Elouadi, B" uniqKey="Elouadi B" first="B." last="Elouadi">B. Elouadi</name>
<affiliation><inist:fA14 i1="04"><s1>Laboratoire d'Elaboration Analyse Chimique et Ingénierie des Matériaux, Université de La Rochelle, Avenue Michel Crépeau</s1>
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<s3>FRA</s3>
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<series><title level="j" type="main">The Journal of physics and chemistry of solids</title>
<title level="j" type="abbreviated">J. phys. chem. solids</title>
<idno type="ISSN">0022-3697</idno>
<imprint><date when="2009">2009</date>
</imprint>
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<seriesStmt><title level="j" type="main">The Journal of physics and chemistry of solids</title>
<title level="j" type="abbreviated">J. phys. chem. solids</title>
<idno type="ISSN">0022-3697</idno>
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</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Charge compensation</term>
<term>Cobalt additions</term>
<term>Doping</term>
<term>Impurity density</term>
<term>Impurity site</term>
<term>Ion substitution</term>
<term>Lithium tantalates</term>
<term>Manganese additions</term>
<term>Phase diagrams</term>
<term>Phonon mode</term>
<term>Raman spectra</term>
<term>Vibrational modes</term>
</keywords>
<keywords scheme="Pascal" xml:lang="fr"><term>Addition manganèse</term>
<term>Spectre Raman</term>
<term>Addition cobalt</term>
<term>Mode phonon</term>
<term>Diagramme phase</term>
<term>Substitution ion</term>
<term>Site impureté</term>
<term>Mode vibration</term>
<term>Dopage</term>
<term>Concentration impureté</term>
<term>Compensation charge</term>
<term>Tantalate de lithium</term>
</keywords>
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<front><div type="abstract" xml:lang="en">We have characterized by Raman spectroscopy the disorder and the local modifications of cation environment in the lithium tantalate structure resulting from the incorporation of bivalent cations Co<sup>2+</sup>
and Mn<sup>2+</sup>
as potential substitutes for Li and/or Ta ions. Frequency and damping of the E(TO1), E(T06) and E(TO8) phonon modes of ceramic powders are studied along seven lines in the ternary phase diagrams Li<sub>2</sub>
O-Ta<sub>2</sub>
O<sub>5</sub>
-(M'O)<sub>2</sub>
with M' = Mn and Co, and compared to those of the pure stoichiometric LiTaO<sub>3</sub>
. Raman spectroscopy is found to be very sensitive to the substitution ions and defects generated in the lattice vibration. Dopants occupy primarily the Li site in the region of lithium oxide excess. The site of Ta becomes progressively implicated in the substitution process when the concentration of dopant increases. In the Li-poor region of the ternary-phase diagram, corresponding to under- stoichiometric compositions, we retain the charge compensation mechanism involving both Li and Ta site according to: 3Li<sup>+</sup>
+Ta<sup>5+</sup>
→4M'<sup>2+</sup>
with M'<sup>2+</sup>
= Mn<sup>2+</sup>
or Co<sup>2+</sup>
.</div>
</front>
</TEI>
<inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0022-3697</s0>
</fA01>
<fA03 i2="1"><s0>J. phys. chem. solids</s0>
</fA03>
<fA05><s2>70</s2>
</fA05>
<fA06><s2>3-4</s2>
</fA06>
<fA08 i1="01" i2="1" l="ENG"><s1>Raman study of LiTaO<sub>3</sub>
-related non-stoichiometric solid solutions isolated inside the ternary systems Li<sub>2</sub>
O-Ta<sub>2</sub>
O<sub>5</sub>
-(M'O)<sub>2</sub>
with M' = Mn, Co</s1>
</fA08>
<fA11 i1="01" i2="1"><s1>ASSANI (A.)</s1>
</fA11>
<fA11 i1="02" i2="1"><s1>LOTFI (El. M.)</s1>
</fA11>
<fA11 i1="03" i2="1"><s1>BOURSON (P.)</s1>
</fA11>
<fA11 i1="04" i2="1"><s1>AILLERIE (M.)</s1>
</fA11>
<fA11 i1="05" i2="1"><s1>LAHBABI (B.)</s1>
</fA11>
<fA11 i1="06" i2="1"><s1>ZRIOUIL (M.)</s1>
</fA11>
<fA11 i1="07" i2="1"><s1>ELOUADI (B.)</s1>
</fA11>
<fA14 i1="01"><s1>Laboratoire de Chimie du Solide Appliquée, LAF no. 501 Département de Chimie, Faculté des Sciences, Avenue Ibn Battouta, BP 1014</s1>
<s2>Rabat</s2>
<s3>MAR</s3>
<sZ>1 aut.</sZ>
<sZ>2 aut.</sZ>
<sZ>5 aut.</sZ>
<sZ>6 aut.</sZ>
</fA14>
<fA14 i1="02"><s1>Département Génie Mécanique, ENSET, B.P.: 6207, Rabat Instituts</s1>
<s2>Rabat</s2>
<s3>MAR</s3>
<sZ>2 aut.</sZ>
</fA14>
<fA14 i1="03"><s1>Laboratoire Matériaux Optiques, Photonique et Systèmes, CNRS UMR 7132, Université Paul Verlaine de Metz-Supelec, 2 rue E. Belin</s1>
<s2>57070 Metz</s2>
<s3>FRA</s3>
<sZ>3 aut.</sZ>
<sZ>4 aut.</sZ>
</fA14>
<fA14 i1="04"><s1>Laboratoire d'Elaboration Analyse Chimique et Ingénierie des Matériaux, Université de La Rochelle, Avenue Michel Crépeau</s1>
<s2>17042 La Rochelle</s2>
<s3>FRA</s3>
<sZ>7 aut.</sZ>
</fA14>
<fA20><s1>755-764</s1>
</fA20>
<fA21><s1>2009</s1>
</fA21>
<fA23 i1="01"><s0>ENG</s0>
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<fA43 i1="01"><s1>INIST</s1>
<s2>8204</s2>
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<s1>© 2009 INIST-CNRS. All rights reserved.</s1>
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<fA47 i1="01" i2="1"><s0>09-0307143</s0>
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<fA60><s1>P</s1>
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</fA66>
<fC01 i1="01" l="ENG"><s0>We have characterized by Raman spectroscopy the disorder and the local modifications of cation environment in the lithium tantalate structure resulting from the incorporation of bivalent cations Co<sup>2+</sup>
and Mn<sup>2+</sup>
as potential substitutes for Li and/or Ta ions. Frequency and damping of the E(TO1), E(T06) and E(TO8) phonon modes of ceramic powders are studied along seven lines in the ternary phase diagrams Li<sub>2</sub>
O-Ta<sub>2</sub>
O<sub>5</sub>
-(M'O)<sub>2</sub>
with M' = Mn and Co, and compared to those of the pure stoichiometric LiTaO<sub>3</sub>
. Raman spectroscopy is found to be very sensitive to the substitution ions and defects generated in the lattice vibration. Dopants occupy primarily the Li site in the region of lithium oxide excess. The site of Ta becomes progressively implicated in the substitution process when the concentration of dopant increases. In the Li-poor region of the ternary-phase diagram, corresponding to under- stoichiometric compositions, we retain the charge compensation mechanism involving both Li and Ta site according to: 3Li<sup>+</sup>
+Ta<sup>5+</sup>
→4M'<sup>2+</sup>
with M'<sup>2+</sup>
= Mn<sup>2+</sup>
or Co<sup>2+</sup>
.</s0>
</fC01>
<fC02 i1="01" i2="3"><s0>001B60C20D</s0>
</fC02>
<fC03 i1="01" i2="3" l="FRE"><s0>Addition manganèse</s0>
<s5>02</s5>
</fC03>
<fC03 i1="01" i2="3" l="ENG"><s0>Manganese additions</s0>
<s5>02</s5>
</fC03>
<fC03 i1="02" i2="3" l="FRE"><s0>Spectre Raman</s0>
<s5>03</s5>
</fC03>
<fC03 i1="02" i2="3" l="ENG"><s0>Raman spectra</s0>
<s5>03</s5>
</fC03>
<fC03 i1="03" i2="3" l="FRE"><s0>Addition cobalt</s0>
<s5>04</s5>
</fC03>
<fC03 i1="03" i2="3" l="ENG"><s0>Cobalt additions</s0>
<s5>04</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE"><s0>Mode phonon</s0>
<s5>05</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG"><s0>Phonon mode</s0>
<s5>05</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA"><s0>Modo fonón</s0>
<s5>05</s5>
</fC03>
<fC03 i1="05" i2="3" l="FRE"><s0>Diagramme phase</s0>
<s5>06</s5>
</fC03>
<fC03 i1="05" i2="3" l="ENG"><s0>Phase diagrams</s0>
<s5>06</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE"><s0>Substitution ion</s0>
<s5>07</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG"><s0>Ion substitution</s0>
<s5>07</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA"><s0>Sustitución ión</s0>
<s5>07</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE"><s0>Site impureté</s0>
<s5>08</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG"><s0>Impurity site</s0>
<s5>08</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA"><s0>Sitio impureza</s0>
<s5>08</s5>
</fC03>
<fC03 i1="08" i2="3" l="FRE"><s0>Mode vibration</s0>
<s5>09</s5>
</fC03>
<fC03 i1="08" i2="3" l="ENG"><s0>Vibrational modes</s0>
<s5>09</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE"><s0>Dopage</s0>
<s5>11</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG"><s0>Doping</s0>
<s5>11</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA"><s0>Doping</s0>
<s5>11</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE"><s0>Concentration impureté</s0>
<s5>12</s5>
</fC03>
<fC03 i1="10" i2="X" l="ENG"><s0>Impurity density</s0>
<s5>12</s5>
</fC03>
<fC03 i1="10" i2="X" l="SPA"><s0>Concentración impureza</s0>
<s5>12</s5>
</fC03>
<fC03 i1="11" i2="3" l="FRE"><s0>Compensation charge</s0>
<s5>14</s5>
</fC03>
<fC03 i1="11" i2="3" l="ENG"><s0>Charge compensation</s0>
<s5>14</s5>
</fC03>
<fC03 i1="12" i2="3" l="FRE"><s0>Tantalate de lithium</s0>
<s2>NK</s2>
<s5>16</s5>
</fC03>
<fC03 i1="12" i2="3" l="ENG"><s0>Lithium tantalates</s0>
<s2>NK</s2>
<s5>16</s5>
</fC03>
<fN21><s1>222</s1>
</fN21>
</pA>
</standard>
<server><NO>PASCAL 09-0307143 INIST</NO>
<ET>Raman study of LiTaO<sub>3</sub>
-related non-stoichiometric solid solutions isolated inside the ternary systems Li<sub>2</sub>
O-Ta<sub>2</sub>
O<sub>5</sub>
-(M'O)<sub>2</sub>
with M' = Mn, Co</ET>
<AU>ASSANI (A.); LOTFI (El. M.); BOURSON (P.); AILLERIE (M.); LAHBABI (B.); ZRIOUIL (M.); ELOUADI (B.)</AU>
<AF>Laboratoire de Chimie du Solide Appliquée, LAF no. 501 Département de Chimie, Faculté des Sciences, Avenue Ibn Battouta, BP 1014/Rabat/Maroc (1 aut., 2 aut., 5 aut., 6 aut.); Département Génie Mécanique, ENSET, B.P.: 6207, Rabat Instituts/Rabat/Maroc (2 aut.); Laboratoire Matériaux Optiques, Photonique et Systèmes, CNRS UMR 7132, Université Paul Verlaine de Metz-Supelec, 2 rue E. Belin/57070 Metz/France (3 aut., 4 aut.); Laboratoire d'Elaboration Analyse Chimique et Ingénierie des Matériaux, Université de La Rochelle, Avenue Michel Crépeau/17042 La Rochelle/France (7 aut.)</AF>
<DT>Publication en série; Niveau analytique</DT>
<SO>The Journal of physics and chemistry of solids; ISSN 0022-3697; Royaume-Uni; Da. 2009; Vol. 70; No. 3-4; Pp. 755-764; Bibl. 34 ref.</SO>
<LA>Anglais</LA>
<EA>We have characterized by Raman spectroscopy the disorder and the local modifications of cation environment in the lithium tantalate structure resulting from the incorporation of bivalent cations Co<sup>2+</sup>
and Mn<sup>2+</sup>
as potential substitutes for Li and/or Ta ions. Frequency and damping of the E(TO1), E(T06) and E(TO8) phonon modes of ceramic powders are studied along seven lines in the ternary phase diagrams Li<sub>2</sub>
O-Ta<sub>2</sub>
O<sub>5</sub>
-(M'O)<sub>2</sub>
with M' = Mn and Co, and compared to those of the pure stoichiometric LiTaO<sub>3</sub>
. Raman spectroscopy is found to be very sensitive to the substitution ions and defects generated in the lattice vibration. Dopants occupy primarily the Li site in the region of lithium oxide excess. The site of Ta becomes progressively implicated in the substitution process when the concentration of dopant increases. In the Li-poor region of the ternary-phase diagram, corresponding to under- stoichiometric compositions, we retain the charge compensation mechanism involving both Li and Ta site according to: 3Li<sup>+</sup>
+Ta<sup>5+</sup>
→4M'<sup>2+</sup>
with M'<sup>2+</sup>
= Mn<sup>2+</sup>
or Co<sup>2+</sup>
.</EA>
<CC>001B60C20D</CC>
<FD>Addition manganèse; Spectre Raman; Addition cobalt; Mode phonon; Diagramme phase; Substitution ion; Site impureté; Mode vibration; Dopage; Concentration impureté; Compensation charge; Tantalate de lithium</FD>
<ED>Manganese additions; Raman spectra; Cobalt additions; Phonon mode; Phase diagrams; Ion substitution; Impurity site; Vibrational modes; Doping; Impurity density; Charge compensation; Lithium tantalates</ED>
<SD>Modo fonón; Sustitución ión; Sitio impureza; Doping; Concentración impureza</SD>
<LO>INIST-8204.354000188241520450</LO>
<ID>09-0307143</ID>
</server>
</inist>
</record>
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