ThuliumV1, Istex, Corpus, bibRecord, 000164

4f–4f intensities of the Tm3+ ions in fluoroindate glasses: the influence of third-order effects through odd intensity parameters

Identifieur interne : 000164 ( Istex/Corpus ); précédent : 000163; suivant : 000165

4f–4f intensities of the Tm3+ ions in fluoroindate glasses: the influence of third-order effects through odd intensity parameters

Auteurs : A. Fl Rez ; M. Fl Rez ; S. A. L Pez-Rivera ; J. Martin ; P. Porcher ; O. L. Malta ; Y. Messaddeq ; M. A. Aegerter

Source :

Journal of Alloys and Compounds [ 0925-8388 ] ; 1998.

RBID : ISTEX:080B77E70936FE2057B8C33D79646B332D9400CF

English descriptors

Abstract

Abstract: In this work an analysis of the phenomenological Ωλ intensity parameters for the Tm3+ ion in fluoroindate glass is made using the standard Judd–Ofelt theory, and a modified oscillator strength taking into account odd-order contributions is utilized. Different sets of phenomenological intensity parameters Ωλ (λ=1,2,3,4,5,6) are discussed. The set of better quality is used to analyze the influence of third-order effects through odd intensity parameters in the new approximation. Fluoroindate glasses of compositions (40−x)InF3–20ZnF2–20SrF2–16BaF2–2GdF3–2NaF–xTmF3 with x=1, 2 and 3 mol% were prepared, and the absorption spectra at room temperature in the spectral range from 300 to 2500 nm were obtained. The experimental oscillator strengths determined from the area under the absorption band are compared to the calculated ones.

Url:

https://api.istex.fr/document/080B77E70936FE2057B8C33D79646B332D9400CF/fulltext/pdf

DOI: 10.1016/S0925-8388(98)00334-X

Links to Exploration step

ISTEX:080B77E70936FE2057B8C33D79646B332D9400CF

Le document en format XML

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<front><div type="abstract" xml:lang="en">Abstract: In this work an analysis of the phenomenological Ωλ intensity parameters for the Tm3+ ion in fluoroindate glass is made using the standard Judd–Ofelt theory, and a modified oscillator strength taking into account odd-order contributions is utilized. Different sets of phenomenological intensity parameters Ωλ (λ=1,2,3,4,5,6) are discussed. The set of better quality is used to analyze the influence of third-order effects through odd intensity parameters in the new approximation. Fluoroindate glasses of compositions (40−x)InF3–20ZnF2–20SrF2–16BaF2–2GdF3–2NaF–xTmF3 with x=1, 2 and 3 mol% were prepared, and the absorption spectra at room temperature in the spectral range from 300 to 2500 nm were obtained. The experimental oscillator strengths determined from the area under the absorption band are compared to the calculated ones.</div>
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<abstract>In this work an analysis of the phenomenological Ωλ intensity parameters for the Tm3+ ion in fluoroindate glass is made using the standard Judd–Ofelt theory, and a modified oscillator strength taking into account odd-order contributions is utilized. Different sets of phenomenological intensity parameters Ωλ (λ=1,2,3,4,5,6) are discussed. The set of better quality is used to analyze the influence of third-order effects through odd intensity parameters in the new approximation. Fluoroindate glasses of compositions (40−x)InF3–20ZnF2–20SrF2–16BaF2–2GdF3–2NaF–xTmF3 with x=1, 2 and 3 mol% were prepared, and the absorption spectra at room temperature in the spectral range from 300 to 2500 nm were obtained. The experimental oscillator strengths determined from the area under the absorption band are compared to the calculated ones.</abstract>
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<notesStmt><note type="content">Fig. 1: Absorption spectrum of Tm3+ in fluoroindate glass, at room temperature, in the spectral range from 340 to 850 nm and from 1150 to 2200 nm. Sample with x=3 mol% of Tm3+.</note>
<note type="content">Table 1: Free-ion wave functions for trivalent thulium ion (Tm3+) in intermediate coupling</note>
<note type="content">Table 2: Values in the intermediate coupling of the matrix elements [Uλ]2=〈fNΨ ́J ́‖Uλ‖fNΨJ〉2. The values for λ=1,3,5 were calculated in this work and include the factor ξ2, and those for λ=2,4,6 were taken from Carnall et al. [14](|ΨJ〉=3H6)</note>
<note type="content">Table 3: Sets of values of the intensity parameters Ω1,…,6 (in units of 10−20 cm2) obtained using different combinations of the matrix elements for the Tm3+ ion in fluoroindate glass</note>
<note type="content">Table 4: Experimental oscillator strengths in units of 10−6, fexp, obtained from the absorption spectra at room temperature, and oscillator strengths, fcalc, calculated from the standard model (Eq. (1)), λ=2,4,6, and from (Eq. (3)) modified oscillator strength, λ=2,3,4,5,6 for Tm3+ ion in fluoroindate glass, x=3 mol%, deviation Δ and r.m.s. (in units of 10−6)</note>
<note type="content">Table 5: Contributions of feven and fodd terms in units of 10−6 to the oscillator strength calculated with sets 9, 10 and 14 for Tm3+ ion in fluoroindate glass, x=3 mol%, T=300 K</note>
<note type="content">Table 6: Percentual average values of the contribution of the even and odd parts to the oscillator strength for the three best fit sets 9, 10 and 14 for Tm3+ ion in fluoroindate glass with x=3 mol%</note>
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<author xml:id="author-0000"><persName><forename type="first">A.</forename>
<surname>Flórez</surname>
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<note type="correspondence"><p>Corresponding author. Tel.: +57 97 6447248; fax: +57 76 447248/346149; e-mail: aflorez@uis.edu.co or aflorezl@multicomputo.multinet.com.co</p>
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<affiliation>Universidad Industrial de Santander, Escuela de Fı́sica, A.A. 678, Bucaramanga, Colombia</affiliation>
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<surname>López-Rivera</surname>
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<affiliation>Laboratorio de Fı́sica Aplicada, Universidad de Los Andes, Mérida, Venezuela</affiliation>
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<surname>Porcher</surname>
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<affiliation>Laboratoire de Chimie Métallurgique et Spectroscopie des Terres Rares, CNRS, F-92195 Meudon-Cedéx, France</affiliation>
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<author xml:id="author-0005"><persName><forename type="first">O.L.</forename>
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<abstract xml:lang="en"><p>In this work an analysis of the phenomenological Ωλ intensity parameters for the Tm3+ ion in fluoroindate glass is made using the standard Judd–Ofelt theory, and a modified oscillator strength taking into account odd-order contributions is utilized. Different sets of phenomenological intensity parameters Ωλ (λ=1,2,3,4,5,6) are discussed. The set of better quality is used to analyze the influence of third-order effects through odd intensity parameters in the new approximation. Fluoroindate glasses of compositions (40−x)InF3–20ZnF2–20SrF2–16BaF2–2GdF3–2NaF–xTmF3 with x=1, 2 and 3 mol% were prepared, and the absorption spectra at room temperature in the spectral range from 300 to 2500 nm were obtained. The experimental oscillator strengths determined from the area under the absorption band are compared to the calculated ones.</p>
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<item><term>Intensity parameter</term>
</item>
<item><term>Fluoroindate glass</term>
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<item><term>Absorption spectra</term>
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<head><ce:title>4f–4f intensities of the Tm<ce:sup>3+</ce:sup>
 ions in fluoroindate glasses: the influence of third-order effects through odd intensity parameters</ce:title>
<ce:author-group><ce:author><ce:given-name>A.</ce:given-name>
<ce:surname>Flórez</ce:surname>
<ce:cross-ref refid="AFF1">a</ce:cross-ref>
<ce:cross-ref refid="CORR1">*</ce:cross-ref>
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<ce:author><ce:given-name>M.</ce:given-name>
<ce:surname>Flórez</ce:surname>
<ce:cross-ref refid="AFF1">a</ce:cross-ref>
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<ce:author><ce:given-name>S.A.</ce:given-name>
<ce:surname>López-Rivera</ce:surname>
<ce:cross-ref refid="AFF2">b</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>J.</ce:given-name>
<ce:surname>Martin</ce:surname>
<ce:cross-ref refid="AFF2">b</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>P.</ce:given-name>
<ce:surname>Porcher</ce:surname>
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<ce:author><ce:given-name>O.L.</ce:given-name>
<ce:surname>Malta</ce:surname>
<ce:cross-ref refid="AFF4">d</ce:cross-ref>
</ce:author>
<ce:author><ce:given-name>Y.</ce:given-name>
<ce:surname>Messaddeq</ce:surname>
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<ce:textfn>Universidad Industrial de Santander, Escuela de Fı́sica, A.A. 678, Bucaramanga, Colombia</ce:textfn>
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<ce:textfn>Laboratorio de Fı́sica Aplicada, Universidad de Los Andes, Mérida, Venezuela</ce:textfn>
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<ce:textfn>Departamento de Quimica Fundamental, UFPE, Cidade Universitaria, 50670-901 Recife (PE), Brazil</ce:textfn>
</ce:affiliation>
<ce:affiliation id="AFF5"><ce:label>e</ce:label>
<ce:textfn>Instituo de Quı́mica, UNESP, CP. 355, CEP 14800-900, Araraquara (SP), Brazil</ce:textfn>
</ce:affiliation>
<ce:affiliation id="AFF6"><ce:label>f</ce:label>
<ce:textfn>Institut fur Neue Materialien, INM, Im Stadtwald, Gebäude 43, D-66123 Saarbrücken, Germany</ce:textfn>
</ce:affiliation>
<ce:correspondence id="CORR1"><ce:label>*</ce:label>
<ce:text>Corresponding author. Tel.: +57 97 6447248; fax: +57 76 447248/346149; e-mail: aflorez@uis.edu.co or aflorezl@multicomputo.multinet.com.co</ce:text>
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<ce:abstract><ce:section-title>Abstract</ce:section-title>
<ce:abstract-sec><ce:simple-para>In this work an analysis of the phenomenological <ce:italic>Ω</ce:italic>
<ce:inf><ce:italic>λ</ce:italic>
</ce:inf>
 intensity parameters for the Tm<ce:sup>3+</ce:sup>
 ion in fluoroindate glass is made using the standard Judd–Ofelt theory, and a modified oscillator strength taking into account odd-order contributions is utilized. Different sets of phenomenological intensity parameters <ce:italic>Ω</ce:italic>
<ce:inf><ce:italic>λ</ce:italic>
</ce:inf>
 (<ce:italic>λ</ce:italic>
=1,2,3,4,5,6) are discussed. The set of better quality is used to analyze the influence of third-order effects through odd intensity parameters in the new approximation. Fluoroindate glasses of compositions (40−<ce:italic>x</ce:italic>
)InF<ce:inf>3</ce:inf>
–20ZnF<ce:inf>2</ce:inf>
–20SrF<ce:inf>2</ce:inf>
–16BaF<ce:inf>2</ce:inf>
–2GdF<ce:inf>3</ce:inf>
–2NaF–<ce:italic>x</ce:italic>
TmF<ce:inf>3</ce:inf>
 with <ce:italic>x</ce:italic>
=1, 2 and 3 mol% were prepared, and the absorption spectra at room temperature in the spectral range from 300 to 2500 nm were obtained. The experimental oscillator strengths determined from the area under the absorption band are compared to the calculated ones.</ce:simple-para>
</ce:abstract-sec>
</ce:abstract>
<ce:keywords class="keyword"><ce:section-title>Keywords</ce:section-title>
<ce:keyword><ce:text>Intensity parameter</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Fluoroindate glass</ce:text>
</ce:keyword>
<ce:keyword><ce:text>Judd–Ofelt theory</ce:text>
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<ce:keyword><ce:text>Absorption spectra</ce:text>
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<affiliation>Universidad Industrial de Santander, Escuela de Fı́sica, A.A. 678, Bucaramanga, Colombia</affiliation>
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<abstract lang="en">Abstract: In this work an analysis of the phenomenological Ωλ intensity parameters for the Tm3+ ion in fluoroindate glass is made using the standard Judd–Ofelt theory, and a modified oscillator strength taking into account odd-order contributions is utilized. Different sets of phenomenological intensity parameters Ωλ (λ=1,2,3,4,5,6) are discussed. The set of better quality is used to analyze the influence of third-order effects through odd intensity parameters in the new approximation. Fluoroindate glasses of compositions (40−x)InF3–20ZnF2–20SrF2–16BaF2–2GdF3–2NaF–xTmF3 with x=1, 2 and 3 mol% were prepared, and the absorption spectra at room temperature in the spectral range from 300 to 2500 nm were obtained. The experimental oscillator strengths determined from the area under the absorption band are compared to the calculated ones.</abstract>
<note type="content">Fig. 1: Absorption spectrum of Tm3+ in fluoroindate glass, at room temperature, in the spectral range from 340 to 850 nm and from 1150 to 2200 nm. Sample with x=3 mol% of Tm3+.</note>
<note type="content">Table 1: Free-ion wave functions for trivalent thulium ion (Tm3+) in intermediate coupling</note>
<note type="content">Table 2: Values in the intermediate coupling of the matrix elements [Uλ]2=〈fNΨ ́J ́‖Uλ‖fNΨJ〉2. The values for λ=1,3,5 were calculated in this work and include the factor ξ2, and those for λ=2,4,6 were taken from Carnall et al. [14](|ΨJ〉=3H6)</note>
<note type="content">Table 3: Sets of values of the intensity parameters Ω1,…,6 (in units of 10−20 cm2) obtained using different combinations of the matrix elements for the Tm3+ ion in fluoroindate glass</note>
<note type="content">Table 4: Experimental oscillator strengths in units of 10−6, fexp, obtained from the absorption spectra at room temperature, and oscillator strengths, fcalc, calculated from the standard model (Eq. (1)), λ=2,4,6, and from (Eq. (3)) modified oscillator strength, λ=2,3,4,5,6 for Tm3+ ion in fluoroindate glass, x=3 mol%, deviation Δ and r.m.s. (in units of 10−6)</note>
<note type="content">Table 5: Contributions of feven and fodd terms in units of 10−6 to the oscillator strength calculated with sets 9, 10 and 14 for Tm3+ ion in fluoroindate glass, x=3 mol%, T=300 K</note>
<note type="content">Table 6: Percentual average values of the contribution of the even and odd parts to the oscillator strength for the three best fit sets 9, 10 and 14 for Tm3+ ion in fluoroindate glass with x=3 mol%</note>
<subject><genre>Keywords</genre>
<topic>Intensity parameter</topic>
<topic>Fluoroindate glass</topic>
<topic>Judd–Ofelt theory</topic>
<topic>Absorption spectra</topic>
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4f–4f intensities of the Tm3+ ions in fluoroindate glasses: the influence of third-order effects through odd intensity parameters

4f–4f intensities of the Tm3+ ions in fluoroindate glasses: the influence of third-order effects through odd intensity parameters

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