Structural characteristics of Mg-doped (I-x)(K0.5Na0.5)NbO3-xLiSbO3 lead-free ceramics as revealed by Raman spectroscopy
Identifieur interne : 000707 ( Chine/Analysis ); précédent : 000706; suivant : 000708Structural characteristics of Mg-doped (I-x)(K0.5Na0.5)NbO3-xLiSbO3 lead-free ceramics as revealed by Raman spectroscopy
Auteurs : RBID : Pascal:12-0053025Descripteurs français
- Pascal (Inist)
- Dopage, Spectre Raman, Addition indium, Mode vibration, Effet non linéaire, Changement morphologique, Concentration impureté, Polymorphisme, Corrélation forte, Addition magnésium, Potassium Sodium Niobate Mixte, Système binaire, Lithium Antimoniate, Perovskites, Réseau orthorhombique, Réseau quadratique, Céramique sans plomb.
- Wicri :
- concept : Dopage.
English descriptors
- KwdEn :
- Binary systems, Doping, Impurity density, Indium additions, Lead free ceramics, Lithium Antimonates, Magnesium additions, Morphological changes, Non linear effect, Orthorhombic lattices, Perovskites, Polymorphism, Potassium Sodium Niobates Mixed, Raman spectra, Strong correlation, Tetragonal lattices, Vibrational modes.
Abstract
This paper presents a Raman spectroscopic study of compositional-change-induced structure variation and of the related mechanism of Mg doping in LiSbO3 (LS)-modified (K0.5Na0.5)NbO3 (KNN) ceramics. With increasing LS content from 0 to 0.06, a discontinuous shift towards higher wavenumbers was found for the band position of the A1g(v1) stretching mode of KNN, accompanied by a clearly nonlinear broadening of this band and a decrease in its intensity. Such morphological changes in the Raman spectrum result from two factors: (i) changes in polarizability/binding strength of the O-Nb-O vibration upon incorporation of Li ions in the KNN perovskitic structure and (ii) a polymorphic phase transition (PPT) from orthorhombic to tetragonal (O → T) phase at x > 0.04. Upon increasing the amount, w, of Mg dopant incorporated into the (1-x)KNN-xLS ceramic structure, the intensity of the Raman bands are enhanced, while the peak position and the full width at half maximum of the A1g(v1) mode was found to experience a clear dependence on both w and x. Raman characterization revealed that the mechanism of Mg doping is strongly correlated with the concentration of Li in the perovskite structure: Mg2+ ions will preferentially replace Li+ ions for low Mg doping while replace K/Na ions for higher doping of Mg. The PPT O → T was also found to be altered by the introduction of Mg and the critical value of LS concentration, xO-T, for incipient O → T transition in the KNN-xLS-wMT system was strongly dependent on Mg content, with xO→T being roughly equal to 0.04 + 2w, for the case of dilute Mg alloying.
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en" level="a">Structural characteristics of Mg-doped (I-x)(K<sub>0.5</sub>Na<sub>0.5</sub>)NbO<sub>3-x</sub>LiSbO<sub>3</sub> lead-free ceramics as revealed by Raman spectroscopy</title><author><name sortKey="Zhu, W L" uniqKey="Zhu W">W. L. Zhu</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Ceramic Physics Laboratory and Research Institute for Nanoscience, RIN, Kyoto Institute of Technology, Sakyo-ku</s1><s2>Matsugasaki, 606-8585 Kyoto</s2><s3>JPN</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>9 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Matsugasaki, 606-8585 Kyoto</wicri:noRegion></affiliation></author><author><name sortKey="Zhu, J L" uniqKey="Zhu J">J. L. Zhu</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Materials Science, Sichuan University</s1><s2>610064 Chengdu</s2><s3>CHN</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>610064 Chengdu</wicri:noRegion></affiliation></author><author><name sortKey="Meng, Y" uniqKey="Meng Y">Y. Meng</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Ceramic Physics Laboratory and Research Institute for Nanoscience, RIN, Kyoto Institute of Technology, Sakyo-ku</s1><s2>Matsugasaki, 606-8585 Kyoto</s2><s3>JPN</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>9 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Matsugasaki, 606-8585 Kyoto</wicri:noRegion></affiliation></author><author><name sortKey="Wang, M S" uniqKey="Wang M">M. S. Wang</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Materials Science, Sichuan University</s1><s2>610064 Chengdu</s2><s3>CHN</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>610064 Chengdu</wicri:noRegion></affiliation></author><author><name sortKey="Zhu, B" uniqKey="Zhu B">B. Zhu</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Materials Science, Sichuan University</s1><s2>610064 Chengdu</s2><s3>CHN</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>610064 Chengdu</wicri:noRegion></affiliation></author><author><name sortKey="Zhu, X H" uniqKey="Zhu X">X. H. Zhu</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Materials Science, Sichuan University</s1><s2>610064 Chengdu</s2><s3>CHN</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>610064 Chengdu</wicri:noRegion></affiliation></author><author><name sortKey="Zhu, J G" uniqKey="Zhu J">J. G. Zhu</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Materials Science, Sichuan University</s1><s2>610064 Chengdu</s2><s3>CHN</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>610064 Chengdu</wicri:noRegion></affiliation></author><author><name sortKey="Xiao, D Q" uniqKey="Xiao D">D. Q. Xiao</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>Department of Materials Science, Sichuan University</s1><s2>610064 Chengdu</s2><s3>CHN</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>République populaire de Chine</country><wicri:noRegion>610064 Chengdu</wicri:noRegion></affiliation></author><author><name sortKey="Pezzotti, G" uniqKey="Pezzotti G">G. Pezzotti</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Ceramic Physics Laboratory and Research Institute for Nanoscience, RIN, Kyoto Institute of Technology, Sakyo-ku</s1><s2>Matsugasaki, 606-8585 Kyoto</s2><s3>JPN</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>9 aut.</sZ></inist:fA14><country>Japon</country><wicri:noRegion>Matsugasaki, 606-8585 Kyoto</wicri:noRegion></affiliation></author></titleStmt><publicationStmt><idno type="inist">12-0053025</idno><date when="2011">2011</date><idno type="stanalyst">PASCAL 12-0053025 INIST</idno><idno type="RBID">Pascal:12-0053025</idno><idno type="wicri:Area/Main/Corpus">002340</idno><idno type="wicri:Area/Main/Repository">002489</idno><idno type="wicri:Area/Chine/Extraction">000707</idno></publicationStmt><seriesStmt><idno type="ISSN">0022-3727</idno><title level="j" type="abbreviated">J. phys., D. Appl. phys. : (Print)</title><title level="j" type="main">Journal of physics. D, Applied physics : (Print)</title></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Binary systems</term><term>Doping</term><term>Impurity density</term><term>Indium additions</term><term>Lead free ceramics</term><term>Lithium Antimonates</term><term>Magnesium additions</term><term>Morphological changes</term><term>Non linear effect</term><term>Orthorhombic lattices</term><term>Perovskites</term><term>Polymorphism</term><term>Potassium Sodium Niobates Mixed</term><term>Raman spectra</term><term>Strong correlation</term><term>Tetragonal lattices</term><term>Vibrational modes</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Dopage</term><term>Spectre Raman</term><term>Addition indium</term><term>Mode vibration</term><term>Effet non linéaire</term><term>Changement morphologique</term><term>Concentration impureté</term><term>Polymorphisme</term><term>Corrélation forte</term><term>Addition magnésium</term><term>Potassium Sodium Niobate Mixte</term><term>Système binaire</term><term>Lithium Antimoniate</term><term>Perovskites</term><term>Réseau orthorhombique</term><term>Réseau quadratique</term><term>Céramique sans plomb</term></keywords><keywords scheme="Wicri" type="concept" xml:lang="fr"><term>Dopage</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">This paper presents a Raman spectroscopic study of compositional-change-induced structure variation and of the related mechanism of Mg doping in LiSbO3 (LS)-modified (K0.5Na0.5)NbO3 (KNN) ceramics. With increasing LS content from 0 to 0.06, a discontinuous shift towards higher wavenumbers was found for the band position of the A1g(v1) stretching mode of KNN, accompanied by a clearly nonlinear broadening of this band and a decrease in its intensity. Such morphological changes in the Raman spectrum result from two factors: (i) changes in polarizability/binding strength of the O-Nb-O vibration upon incorporation of Li ions in the KNN perovskitic structure and (ii) a polymorphic phase transition (PPT) from orthorhombic to tetragonal (O → T) phase at x > 0.04. Upon increasing the amount, w, of Mg dopant incorporated into the (1-x)KNN-xLS ceramic structure, the intensity of the Raman bands are enhanced, while the peak position and the full width at half maximum of the A1g(v1) mode was found to experience a clear dependence on both w and x. Raman characterization revealed that the mechanism of Mg doping is strongly correlated with the concentration of Li in the perovskite structure: Mg2+ ions will preferentially replace Li+ ions for low Mg doping while replace K/Na ions for higher doping of Mg. The PPT O → T was also found to be altered by the introduction of Mg and the critical value of LS concentration, xO-T, for incipient O → T transition in the KNN-xLS-wMT system was strongly dependent on Mg content, with xO→T being roughly equal to 0.04 + 2w, for the case of dilute Mg alloying.</div></front></TEI><inist><standard h6="B"><pA><fA01 i1="01" i2="1"><s0>0022-3727</s0></fA01><fA02 i1="01"><s0>JPAPBE</s0></fA02><fA03 i2="1"><s0>J. phys., D. Appl. phys. : (Print)</s0></fA03><fA05><s2>44</s2></fA05><fA06><s2>50</s2></fA06><fA08 i1="01" i2="1" l="ENG"><s1>Structural characteristics of Mg-doped (I-x)(K<sub>0.5</sub>Na<sub>0.5</sub>)NbO<sub>3-x</sub>LiSbO<sub>3</sub> lead-free ceramics as revealed by Raman spectroscopy</s1></fA08><fA11 i1="01" i2="1"><s1>ZHU (W. L.)</s1></fA11><fA11 i1="02" i2="1"><s1>ZHU (J. L.)</s1></fA11><fA11 i1="03" i2="1"><s1>MENG (Y.)</s1></fA11><fA11 i1="04" i2="1"><s1>WANG (M. S.)</s1></fA11><fA11 i1="05" i2="1"><s1>ZHU (B.)</s1></fA11><fA11 i1="06" i2="1"><s1>ZHU (X. H.)</s1></fA11><fA11 i1="07" i2="1"><s1>ZHU (J. G.)</s1></fA11><fA11 i1="08" i2="1"><s1>XIAO (D. Q.)</s1></fA11><fA11 i1="09" i2="1"><s1>PEZZOTTI (G.)</s1></fA11><fA14 i1="01"><s1>Ceramic Physics Laboratory and Research Institute for Nanoscience, RIN, Kyoto Institute of Technology, Sakyo-ku</s1><s2>Matsugasaki, 606-8585 Kyoto</s2><s3>JPN</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ><sZ>9 aut.</sZ></fA14><fA14 i1="02"><s1>Department of Materials Science, Sichuan University</s1><s2>610064 Chengdu</s2><s3>CHN</s3><sZ>2 aut.</sZ><sZ>4 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>7 aut.</sZ><sZ>8 aut.</sZ></fA14><fA20><s2>505303.1-505303.8</s2></fA20><fA21><s1>2011</s1></fA21><fA23 i1="01"><s0>ENG</s0></fA23><fA43 i1="01"><s1>INIST</s1><s2>5841</s2><s5>354000505994490110</s5></fA43><fA44><s0>0000</s0><s1>© 2012 INIST-CNRS. All rights reserved.</s1></fA44><fA45><s0>32 ref.</s0></fA45><fA47 i1="01" i2="1"><s0>12-0053025</s0></fA47><fA60><s1>P</s1></fA60><fA61><s0>A</s0></fA61><fA64 i1="01" i2="1"><s0>Journal of physics. D, Applied physics : (Print)</s0></fA64><fA66 i1="01"><s0>GBR</s0></fA66><fC01 i1="01" l="ENG"><s0>This paper presents a Raman spectroscopic study of compositional-change-induced structure variation and of the related mechanism of Mg doping in LiSbO3 (LS)-modified (K0.5Na0.5)NbO3 (KNN) ceramics. With increasing LS content from 0 to 0.06, a discontinuous shift towards higher wavenumbers was found for the band position of the A1g(v1) stretching mode of KNN, accompanied by a clearly nonlinear broadening of this band and a decrease in its intensity. Such morphological changes in the Raman spectrum result from two factors: (i) changes in polarizability/binding strength of the O-Nb-O vibration upon incorporation of Li ions in the KNN perovskitic structure and (ii) a polymorphic phase transition (PPT) from orthorhombic to tetragonal (O → T) phase at x > 0.04. Upon increasing the amount, w, of Mg dopant incorporated into the (1-x)KNN-xLS ceramic structure, the intensity of the Raman bands are enhanced, while the peak position and the full width at half maximum of the A1g(v1) mode was found to experience a clear dependence on both w and x. Raman characterization revealed that the mechanism of Mg doping is strongly correlated with the concentration of Li in the perovskite structure: Mg2+ ions will preferentially replace Li+ ions for low Mg doping while replace K/Na ions for higher doping of Mg. The PPT O → T was also found to be altered by the introduction of Mg and the critical value of LS concentration, xO-T, for incipient O → T transition in the KNN-xLS-wMT system was strongly dependent on Mg content, with xO→T being roughly equal to 0.04 + 2w, for the case of dilute Mg alloying.</s0></fC01><fC02 i1="01" i2="3"><s0>001B60C20D</s0></fC02><fC02 i1="02" i2="3"><s0>001B60D70K</s0></fC02><fC02 i1="03" i2="3"><s0>001B70G84D</s0></fC02><fC03 i1="01" i2="X" l="FRE"><s0>Dopage</s0><s5>02</s5></fC03><fC03 i1="01" i2="X" l="ENG"><s0>Doping</s0><s5>02</s5></fC03><fC03 i1="01" i2="X" l="SPA"><s0>Doping</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 indium</s0><s5>04</s5></fC03><fC03 i1="03" i2="3" l="ENG"><s0>Indium additions</s0><s5>04</s5></fC03><fC03 i1="04" i2="3" l="FRE"><s0>Mode vibration</s0><s5>05</s5></fC03><fC03 i1="04" i2="3" l="ENG"><s0>Vibrational modes</s0><s5>05</s5></fC03><fC03 i1="05" i2="X" l="FRE"><s0>Effet non linéaire</s0><s5>06</s5></fC03><fC03 i1="05" i2="X" l="ENG"><s0>Non linear effect</s0><s5>06</s5></fC03><fC03 i1="05" i2="X" l="SPA"><s0>Efecto no lineal</s0><s5>06</s5></fC03><fC03 i1="06" i2="3" l="FRE"><s0>Changement morphologique</s0><s5>07</s5></fC03><fC03 i1="06" i2="3" l="ENG"><s0>Morphological changes</s0><s5>07</s5></fC03><fC03 i1="07" i2="X" l="FRE"><s0>Concentration impureté</s0><s5>08</s5></fC03><fC03 i1="07" i2="X" l="ENG"><s0>Impurity density</s0><s5>08</s5></fC03><fC03 i1="07" i2="X" l="SPA"><s0>Concentración impureza</s0><s5>08</s5></fC03><fC03 i1="08" i2="3" l="FRE"><s0>Polymorphisme</s0><s5>09</s5></fC03><fC03 i1="08" i2="3" l="ENG"><s0>Polymorphism</s0><s5>09</s5></fC03><fC03 i1="09" i2="3" l="FRE"><s0>Corrélation forte</s0><s5>10</s5></fC03><fC03 i1="09" i2="3" l="ENG"><s0>Strong correlation</s0><s5>10</s5></fC03><fC03 i1="10" i2="3" l="FRE"><s0>Addition magnésium</s0><s5>13</s5></fC03><fC03 i1="10" i2="3" l="ENG"><s0>Magnesium additions</s0><s5>13</s5></fC03><fC03 i1="11" i2="X" l="FRE"><s0>Potassium Sodium Niobate Mixte</s0><s2>NC</s2><s2>NA</s2><s5>15</s5></fC03><fC03 i1="11" i2="X" l="ENG"><s0>Potassium Sodium Niobates Mixed</s0><s2>NC</s2><s2>NA</s2><s5>15</s5></fC03><fC03 i1="11" i2="X" l="SPA"><s0>Mixto</s0><s2>NC</s2><s2>NA</s2><s5>15</s5></fC03><fC03 i1="12" i2="3" l="FRE"><s0>Système binaire</s0><s5>16</s5></fC03><fC03 i1="12" i2="3" l="ENG"><s0>Binary systems</s0><s5>16</s5></fC03><fC03 i1="13" i2="3" l="FRE"><s0>Lithium Antimoniate</s0><s2>NC</s2><s2>NA</s2><s5>17</s5></fC03><fC03 i1="13" i2="3" l="ENG"><s0>Lithium Antimonates</s0><s2>NC</s2><s2>NA</s2><s5>17</s5></fC03><fC03 i1="14" i2="3" l="FRE"><s0>Perovskites</s0><s5>18</s5></fC03><fC03 i1="14" i2="3" l="ENG"><s0>Perovskites</s0><s5>18</s5></fC03><fC03 i1="15" i2="3" l="FRE"><s0>Réseau orthorhombique</s0><s5>19</s5></fC03><fC03 i1="15" i2="3" l="ENG"><s0>Orthorhombic lattices</s0><s5>19</s5></fC03><fC03 i1="16" i2="3" l="FRE"><s0>Réseau quadratique</s0><s5>20</s5></fC03><fC03 i1="16" i2="3" l="ENG"><s0>Tetragonal lattices</s0><s5>20</s5></fC03><fC03 i1="17" i2="3" l="FRE"><s0>Céramique sans plomb</s0><s4>CD</s4><s5>96</s5></fC03><fC03 i1="17" i2="3" l="ENG"><s0>Lead free ceramics</s0><s4>CD</s4><s5>96</s5></fC03><fN21><s1>030</s1></fN21></pA></standard></inist></record>Pour manipuler ce document sous Unix (Dilib)
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