Evidence for a spin-correlated crystal field-two-photon spectroscopy of thulium III in the elpasolite Cs2NaYCl6 :Tm
Identifieur interne : 002156 ( Main/Exploration ); précédent : 002155; suivant : 002157Evidence for a spin-correlated crystal field-two-photon spectroscopy of thulium III in the elpasolite Cs2NaYCl6 :Tm
Auteurs : J. R. G. Thorne [Royaume-Uni] ; QINGHUA ZENG [Royaume-Uni] ; R. G. Denning [Royaume-Uni]Source :
- Journal of physics. Condensed matter : (Print) [ 0953-8984 ] ; 2001.
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Abstract
We present two-photon excitation spectra for thulium III in the elpasolite Cs2NaYCl6:Tm. 37 out of the total of 40 crystal-field (CF) levels have been assigned, with the aid of a one-electron CF Hamiltonian, representing the most extensive data set so far reported for Tm III at a cubic site. Deviations from the predictions of the one-electron CF model are unusually large, the effective fourth-rank CF parameter being 60% larger for the singlet states than for the triplet states. This is discussed in terms of a spin-polarized covalency that is more pronounced in the singlet states of the metal ion.
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R. G." last="Thorne">J. R. G. Thorne</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Chemistry, University of Oxford, Inorganic Chemistry, South Parks Road</s1><s2>Oxford OX1 3QR</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Oxford OX1 3QR</wicri:noRegion><orgName type="university">Université d'Oxford</orgName><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author><author><name sortKey="Qinghua Zeng" sort="Qinghua Zeng" uniqKey="Qinghua Zeng" last="Qinghua Zeng">QINGHUA ZENG</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Chemistry, University of Oxford, Inorganic Chemistry, South Parks Road</s1><s2>Oxford OX1 3QR</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Oxford OX1 3QR</wicri:noRegion><orgName type="university">Université d'Oxford</orgName><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author><author><name sortKey="Denning, R G" sort="Denning, R G" uniqKey="Denning R" first="R. G." last="Denning">R. G. Denning</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>Department of Chemistry, University of Oxford, Inorganic Chemistry, South Parks Road</s1><s2>Oxford OX1 3QR</s2><s3>GBR</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Royaume-Uni</country><wicri:noRegion>Oxford OX1 3QR</wicri:noRegion><orgName type="university">Université d'Oxford</orgName><placeName><settlement type="city">Oxford</settlement><region type="nation">Angleterre</region><region type="région" nuts="1">Oxfordshire</region></placeName></affiliation></author></analytic><series><title level="j" type="main">Journal of physics. Condensed matter : (Print)</title><title level="j" type="abbreviated">J. phys., Condens. matter : (Print)</title><idno type="ISSN">0953-8984</idno><imprint><date when="2001">2001</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of physics. Condensed matter : (Print)</title><title level="j" type="abbreviated">J. phys., Condens. matter : (Print)</title><idno type="ISSN">0953-8984</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cesium chlorides</term><term>Crystal field</term><term>Excitation spectrum</term><term>Experimental study</term><term>Fluorescence</term><term>Impurity states</term><term>Quaternary compounds</term><term>Sodium chlorides</term><term>Spin correlations</term><term>Thulium additions</term><term>Two-photon spectra</term><term>Yttrium chlorides</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Etude expérimentale</term><term>Champ cristallin</term><term>Addition thulium</term><term>Spectre 2 photons</term><term>Spectre excitation</term><term>Corrélation spin</term><term>Etat impureté</term><term>Fluorescence</term><term>Césium chlorure</term><term>Sodium chlorure</term><term>Yttrium chlorure</term><term>Composé quaternaire</term><term>Cs2NaYCl6:Tm</term><term>Cl Cs Na Y</term><term>7170C</term><term>7155H</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">We present two-photon excitation spectra for thulium III in the elpasolite Cs<sub>2</sub>NaYCl<sub>6</sub>:Tm. 37 out of the total of 40 crystal-field (CF) levels have been assigned, with the aid of a one-electron CF Hamiltonian, representing the most extensive data set so far reported for Tm III at a cubic site. Deviations from the predictions of the one-electron CF model are unusually large, the effective fourth-rank CF parameter being 60% larger for the singlet states than for the triplet states. This is discussed in terms of a spin-polarized covalency that is more pronounced in the singlet states of the metal ion.</div></front></TEI><affiliations><list><country><li>Royaume-Uni</li></country><region><li>Angleterre</li><li>Oxfordshire</li></region><settlement><li>Oxford</li></settlement><orgName><li>Université d'Oxford</li></orgName></list><tree><country name="Royaume-Uni"><region name="Angleterre"><name sortKey="Thorne, J R G" sort="Thorne, J R G" uniqKey="Thorne J" first="J. R. G." last="Thorne">J. R. G. Thorne</name></region><name sortKey="Denning, R G" sort="Denning, R G" uniqKey="Denning R" first="R. G." last="Denning">R. G. Denning</name><name sortKey="Qinghua Zeng" sort="Qinghua Zeng" uniqKey="Qinghua Zeng" last="Qinghua Zeng">QINGHUA ZENG</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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