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조재필

Cho, Jaephil
Nano Energy Storage Material Lab.
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dc.citation.endPage 214 -
dc.citation.number 1-3 -
dc.citation.startPage 205 -
dc.citation.title JOURNAL OF NON-CRYSTALLINE SOLIDS -
dc.citation.volume 270 -
dc.contributor.author Cho, Jaephil -
dc.contributor.author Martin, SW -
dc.contributor.author Meyer, B -
dc.contributor.author Kim, KH -
dc.contributor.author Torgeson, DR -
dc.date.accessioned 2023-12-22T12:07:53Z -
dc.date.available 2023-12-22T12:07:53Z -
dc.date.created 2014-07-28 -
dc.date.issued 2000-05 -
dc.description.abstract The B-11 NMR spectra of xRb(2)S + (1 - x)B2S3 glasses in the range 0 less than or equal to x less than or equal to 0.75 and of xCs(2)S + (1 - x)B2S3 glasses in the range 0 less than or equal to x less than or equal to 0.60 are reported. The addition of Rb2S to B2S3 creates on average approximately two and one-half tetrahedral borons for each added sulfur ion, whereas It is found that the addition of Cs2S creates approximately 2 tetrahedral borons for each added sulfur ion. This behavior while more similar to that seen in the alkali borate glasses, contrasts that seen in the Na and K thioborate glasses, where six to eight and three, respectively, tetrahedral borons are formed for every sulfide anion added to the glass. These findings are supported by the IR and B-11 NMR spectra of the di-thioborate polycrystals (c-Rb2S:2B(2)S(3) and c-Cs2S:2B(2)S(3)) whose structures appear to be comprised of two BS4 tetrahedrals and two BS3 trigonals (N-4 similar to 0.5) like that in the alkali di-borate phases for both Rb and Cs. Unlike the B-11 NMR resonances of the sodium thioborate glasses where a single sharp line is observed for the tetrahedral boron site and a single quadrupolar broadened line is observed for all the trigonal sites, a third resonance line is observed at high alkali fractions for the rubidium and cesium thioborate glasses. This new structural feature may arise from asymmetric MBS2 (meta-thioborate groups) or tetrahedral boron groups possessing a non-bridging sulfur. -
dc.identifier.bibliographicCitation JOURNAL OF NON-CRYSTALLINE SOLIDS, v.270, no.1-3, pp.205 - 214 -
dc.identifier.doi 10.1016/S0022-3093(99)00958-8 -
dc.identifier.issn 0022-3093 -
dc.identifier.scopusid 2-s2.0-0000664689 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/5249 -
dc.identifier.url http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0000664689 -
dc.identifier.wosid 000087244300023 -
dc.language 영어 -
dc.publisher ELSEVIER SCIENCE BV -
dc.title Static B-11 NMR studies of the short range order in alkali metal modified B2S3 glasses -
dc.type Article -
dc.description.journalRegisteredClass scopus -

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