Structural, optical and thermal properties of glass and anti-glass phases in strontium tellurite and borotellurite systems doped with europium

Journal Article · Mon Oct 15 00:00:00 EDT 2018 · Materials Research Bulletin

DOI:https://doi.org/10.1016/J.MATERRESBULL.2018.06.020· OSTI ID:22805250

Kaur, Rajinder; Khanna, Atul ^[1]; González-Barriuso, Marina; González, Fernando ^[2]; Chen, Banghao ^[3]

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1. Department of Physics, Guru Nanak Dev University, Amritsar, 143005, Punjab (India)
2. Department of Chemistry and Process & Recourse Engineering, University of Cantabria, Santander, 39005 (Spain)
3. Department of Chemistry & Biochemistry, Florida State University, Tallahassee, FL, 3206-4390 (United States)

Highlights: • Optical, thermal and structural properties of SrO-TeO{sub 2} and SrO-B{sub 2}O{sub 3}-TeO{sub 2} glasses containing Eu{sup 3+}. • Co-existing glass and SrTe{sub 5}O{sub 11} anti-glass inclusions in 10SrO-90TeO{sub 2} sample. • Rectangular, triangular, spherical and flower shaped inclusions in the samples. • 1-mol% Eu{sub 2}O{sub 3} modifies the shape and size of the inclusions. • B{sub 2}O{sub 3} suppresses the growth of anti-glass inclusions and enhances Eu{sup 3+} fluorescence. - Abstract: Glass sample of the composition: 10SrO-90TeO{sub 2} was prepared by melt-quenching technique and found to contain triangular, rectangular, and spherical shaped micro-inclusions of the average size ∼803 μm in the glassy matrix. The inclusions grow to an average size of ∼1347 μm and assume flower-like morphology upon adding 1 mol% Eu{sub 2}O{sub 3} in the 10SrO-90TeO{sub 2} sample. X-ray diffraction studies showed that the micro-inclusions exhibit sharp peaks, but their Raman spectra have broad phonon bands that are indistinguishable or very similar to that of the glassy matrix phase. The addition of 10 mol% B{sub 2}O{sub 3} in the samples inhibits the growth of inclusions of anti-glass phases and forms purely amorphous samples. B{sub 2}O{sub 3} significantly enhances the photoluminescence properties of Eu{sup 3+} doped samples. Furthermore, B{sub 2}O{sub 3} converts the four-fold co-ordinated Te-O structural units into three-fold co-ordinated Te-O units.

• OSTI ID: 22805250
• Journal Information: Materials Research Bulletin, Vol. 106; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BORON OXIDES
DOPED MATERIALS
EUROPIUM
EUROPIUM IONS
EUROPIUM OXIDES
GLASS
MORPHOLOGY
OPTICAL PROPERTIES
PHONONS
PHOTOLUMINESCENCE
QUENCHING
RAMAN SPECTROSCOPY
SPHERICAL CONFIGURATION
STRONTIUM
STRONTIUM OXIDES
TELLURIDES
TELLURIUM OXIDES
THERMODYNAMIC PROPERTIES
X-RAY DIFFRACTION