Thermal and optical properties of Tm3+ doped tellurite glasses.
Identifieur interne : 000693 ( PubMed/Checkpoint ); précédent : 000692; suivant : 000694Thermal and optical properties of Tm3+ doped tellurite glasses.
Auteurs : G. Ozen [Turquie] ; B. Demirata ; M L Oveço Lu ; A. GençSource :
- Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy [ 1386-1425 ] ; 2001.
Descripteurs français
- KwdFr :
- MESH :
English descriptors
- KwdEn :
- MESH :
- chemical , chemistry : Lithium Chloride, Tellurium, Thulium.
- Crystallization, Differential Thermal Analysis, Glass, Optics and Photonics, Spectrophotometry, Ultraviolet.
Abstract
Ultraviolet, visible (UV/VIS) and differential thermal analysis (DTA) measurements were carried out in order to investigate the optical and thermal properties of various 0.5 mol.% Tm2O3 containing (1 - x)TeO2 + xLiCl glasses in molar ratio. The samples were prepared by fusing the mixture of their respective reagent grade powders in a platinum cricuble at 750 degrees C for 30 min. DTA curves taken in the 23-600 degrees C temperature range with a heating rate of 10 degrees C/min reveal a change in the value of the glass transition temperature, Tg, while melting was not observed for the glasses containing LiCl content less than 50 mol.%. These glasses were found to be moisture-resistant. However, the glasses with LiCl content higher than 50 mol.%, in which a melting peak was observed at Tc = 401 degrees C, were moisture-sensitive. Absorption measurements in the UV/VIS region of the glasses without Tm2O3 content show that the Urbach cutoff occurs at about 320 nm and, is relatively independent of the LiCl content. Six absorption bands were observed in the Tm2O3 doped glasses corresponding to the absorption of the 1G4, 3F2, 3F3 and 3F4, 3H5 and 3H4 levels from the 3H6 ground level of Tm3+ ions. The spectra also show that the integrated absorption cross-section of each band depends on the glass composition. Judd-Ofelt theory was used to determine the Judd-Ofelt parameters as well as the radiative transition probabilities for the metastable levels of Tm3+ ions in (0.3)LiCl + (0.7) TeO2: 0.01 Tm2O3 glass which is moisture-resistant.
PubMed: 11206561
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Demirata</name></author><author><name sortKey="Oveco Lu, M L" sort="Oveco Lu, M L" uniqKey="Oveco Lu M" first="M L" last="Oveço Lu">M L Oveço Lu</name></author><author><name sortKey="Genc, A" sort="Genc, A" uniqKey="Genc A" first="A" last="Genç">A. Genç</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2001">2001</date><idno type="RBID">pubmed:11206561</idno><idno type="pmid">11206561</idno><idno type="wicri:Area/PubMed/Corpus">000733</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Corpus" wicri:corpus="PubMed">000733</idno><idno type="wicri:Area/PubMed/Curation">000733</idno><idno type="wicri:explorRef" wicri:stream="PubMed" wicri:step="Curation">000733</idno><idno type="wicri:Area/PubMed/Checkpoint">000733</idno><idno type="wicri:explorRef" wicri:stream="Checkpoint" wicri:step="PubMed">000733</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Thermal and optical properties of Tm3+ doped tellurite glasses.</title><author><name sortKey="Ozen, G" sort="Ozen, G" uniqKey="Ozen G" first="G" last="Ozen">G. Ozen</name><affiliation wicri:level="1"><nlm:affiliation>Faculty of Science and Letters, Department of Physics, Istanbul Technical University, Maslak, Turkey. gozenl@itu.edu.tr</nlm:affiliation><country xml:lang="fr">Turquie</country><wicri:regionArea>Faculty of Science and Letters, Department of Physics, Istanbul Technical University, Maslak</wicri:regionArea><wicri:noRegion>Maslak</wicri:noRegion></affiliation></author><author><name sortKey="Demirata, B" sort="Demirata, B" uniqKey="Demirata B" first="B" last="Demirata">B. Demirata</name></author><author><name sortKey="Oveco Lu, M L" sort="Oveco Lu, M L" uniqKey="Oveco Lu M" first="M L" last="Oveço Lu">M L Oveço Lu</name></author><author><name sortKey="Genc, A" sort="Genc, A" uniqKey="Genc A" first="A" last="Genç">A. Genç</name></author></analytic><series><title level="j">Spectrochimica acta. 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The samples were prepared by fusing the mixture of their respective reagent grade powders in a platinum cricuble at 750 degrees C for 30 min. DTA curves taken in the 23-600 degrees C temperature range with a heating rate of 10 degrees C/min reveal a change in the value of the glass transition temperature, Tg, while melting was not observed for the glasses containing LiCl content less than 50 mol.%. These glasses were found to be moisture-resistant. However, the glasses with LiCl content higher than 50 mol.%, in which a melting peak was observed at Tc = 401 degrees C, were moisture-sensitive. Absorption measurements in the UV/VIS region of the glasses without Tm2O3 content show that the Urbach cutoff occurs at about 320 nm and, is relatively independent of the LiCl content. Six absorption bands were observed in the Tm2O3 doped glasses corresponding to the absorption of the 1G4, 3F2, 3F3 and 3F4, 3H5 and 3H4 levels from the 3H6 ground level of Tm3+ ions. The spectra also show that the integrated absorption cross-section of each band depends on the glass composition. Judd-Ofelt theory was used to determine the Judd-Ofelt parameters as well as the radiative transition probabilities for the metastable levels of Tm3+ ions in (0.3)LiCl + (0.7) TeO2: 0.01 Tm2O3 glass which is moisture-resistant.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">11206561</PMID><DateCreated><Year>2001</Year><Month>02</Month><Day>05</Day></DateCreated><DateCompleted><Year>2001</Year><Month>05</Month><Day>17</Day></DateCompleted><DateRevised><Year>2013</Year><Month>11</Month><Day>21</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">1386-1425</ISSN><JournalIssue CitedMedium="Print"><Volume>57</Volume><Issue>2</Issue><PubDate><Year>2001</Year><Month>Feb</Month></PubDate></JournalIssue><Title>Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy</Title><ISOAbbreviation>Spectrochim Acta A Mol Biomol Spectrosc</ISOAbbreviation></Journal><ArticleTitle>Thermal and optical properties of Tm3+ doped tellurite glasses.</ArticleTitle><Pagination><MedlinePgn>273-80</MedlinePgn></Pagination><Abstract><AbstractText>Ultraviolet, visible (UV/VIS) and differential thermal analysis (DTA) measurements were carried out in order to investigate the optical and thermal properties of various 0.5 mol.% Tm2O3 containing (1 - x)TeO2 + xLiCl glasses in molar ratio. The samples were prepared by fusing the mixture of their respective reagent grade powders in a platinum cricuble at 750 degrees C for 30 min. DTA curves taken in the 23-600 degrees C temperature range with a heating rate of 10 degrees C/min reveal a change in the value of the glass transition temperature, Tg, while melting was not observed for the glasses containing LiCl content less than 50 mol.%. These glasses were found to be moisture-resistant. However, the glasses with LiCl content higher than 50 mol.%, in which a melting peak was observed at Tc = 401 degrees C, were moisture-sensitive. Absorption measurements in the UV/VIS region of the glasses without Tm2O3 content show that the Urbach cutoff occurs at about 320 nm and, is relatively independent of the LiCl content. Six absorption bands were observed in the Tm2O3 doped glasses corresponding to the absorption of the 1G4, 3F2, 3F3 and 3F4, 3H5 and 3H4 levels from the 3H6 ground level of Tm3+ ions. The spectra also show that the integrated absorption cross-section of each band depends on the glass composition. Judd-Ofelt theory was used to determine the Judd-Ofelt parameters as well as the radiative transition probabilities for the metastable levels of Tm3+ ions in (0.3)LiCl + (0.7) TeO2: 0.01 Tm2O3 glass which is moisture-resistant.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Ozen</LastName><ForeName>G</ForeName><Initials>G</Initials><AffiliationInfo><Affiliation>Faculty of Science and Letters, Department of Physics, Istanbul Technical University, Maslak, Turkey. gozenl@itu.edu.tr</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Demirata</LastName><ForeName>B</ForeName><Initials>B</Initials></Author><Author ValidYN="Y"><LastName>Oveçoğlu</LastName><ForeName>M L</ForeName><Initials>ML</Initials></Author><Author ValidYN="Y"><LastName>Genç</LastName><ForeName>A</ForeName><Initials>A</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>Spectrochim Acta A Mol Biomol Spectrosc</MedlineTA><NlmUniqueID>9602533</NlmUniqueID><ISSNLinking>1386-1425</ISSNLinking></MedlineJournalInfo><ChemicalList><Chemical><RegistryNumber>8RKC5ATI4P</RegistryNumber><NameOfSubstance UI="D013932">Thulium</NameOfSubstance></Chemical><Chemical><RegistryNumber>G4962QA067</RegistryNumber><NameOfSubstance UI="D018021">Lithium Chloride</NameOfSubstance></Chemical><Chemical><RegistryNumber>IVA6SGP6QM</RegistryNumber><NameOfSubstance UI="C026660">tellurous acid</NameOfSubstance></Chemical><Chemical><RegistryNumber>NQA0O090ZJ</RegistryNumber><NameOfSubstance UI="D013691">Tellurium</NameOfSubstance></Chemical></ChemicalList><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" UI="D003460">Crystallization</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D004055">Differential Thermal Analysis</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D005898">Glass</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D018021">Lithium Chloride</DescriptorName><QualifierName MajorTopicYN="N" UI="Q000737">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D055095">Optics and Photonics</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D013056">Spectrophotometry, Ultraviolet</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D013691">Tellurium</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000737">chemistry</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D013932">Thulium</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000737">chemistry</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2001</Year><Month>2</Month><Day>24</Day><Hour>12</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2001</Year><Month>5</Month><Day>18</Day><Hour>10</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2001</Year><Month>2</Month><Day>24</Day><Hour>12</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">11206561</ArticleId><ArticleId IdType="pii">S1386-1425(00)00392-9</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Turquie</li></country></list><tree><noCountry><name sortKey="Demirata, B" sort="Demirata, B" uniqKey="Demirata B" first="B" last="Demirata">B. Demirata</name><name sortKey="Genc, A" sort="Genc, A" uniqKey="Genc A" first="A" last="Genç">A. Genç</name><name sortKey="Oveco Lu, M L" sort="Oveco Lu, M L" uniqKey="Oveco Lu M" first="M L" last="Oveço Lu">M L Oveço Lu</name></noCountry><country name="Turquie"><noRegion><name sortKey="Ozen, G" sort="Ozen, G" uniqKey="Ozen G" first="G" last="Ozen">G. Ozen</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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