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AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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The STUDIA UNIVERSITATIS BABEŞ-BOLYAI issue article summary The summary of the selected article appears at the bottom of the page. In order to get back to the contents of the issue this article belongs to you have to access the link from the title. In order to see all the articles of the archive which have as author/co-author one of the authors mentioned below, you have to access the link from the author's name. |
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STUDIA PHYSICA - Issue no. Sp. Issue / 2003 | |||||||
Article: |
THE INFLUENCE OF B2O3- BI2O3 VITREOUS MATRIX ON COPPER IONS EPR ABSORPTION SPECTRA. Authors: R. STEFAN, S. SIMON. |
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Abstract: Results of EPR investigations performed on glasses from (100-y)[(xB2O3(1-x) Bi2O3]yCuO system with 0.07 x 0.8 and y = 0.5 and 1 mol % are reported. The changes in EPR spectra point out the modification of the copper ions vicinity due to the variation of the B2O3/Bi2O3 ratio in the glass matrix. The hyperfine structure is observed in the parallel band only for samples with high boron oxide content wherein the Cu2+ paramagnetic ions can be disposed in sites of octahedral symmetry, while in the samples with high bismuth oxide content Cu2+ ions are experiencing a more disordered surrounding. | |||||||
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