Evolution and characterization of fluorite-like nano-SrBi2Nb2O9 phase in the SrO-Bi2O3-Nb2O 5-Li2B4O7 glass system

N. Syam Prasad; K. B.R. Varma; Y. Takahashi; Y. Benino; T. Fujiwara; T. Komatsu

doi:10.1016/S0022-4596(03)00026-4

Evolution and characterization of fluorite-like nano-SrBi₂Nb₂O₉ phase in the SrO-Bi₂O₃-Nb₂O ₅-Li₂B₄O₇ glass system

N. Syam Prasad, K. B.R. Varma, Y. Takahashi, Y. Benino, T. Fujiwara, T. Komatsu

Research output: Contribution to journal › Article › peer-review

49 Citations (Scopus)

Abstract

Transparent glasses of various compositions in the system (100-x)Li₂B₄O₇-x (SrO-Bi₂O₃-Nb₂O₅) (where x=10, 20, 30, 40, 50 and 60, in molar ratio) were fabricated via splat quenching technique. The glassy nature of the as-quenched samples was established by differential thermal analyses. X-ray powder diffraction (XRD) and transmission electron microscopic studies confirmed the amorphous nature of the as-quenched and crystallinity in the heat-treated samples. Fluorite phase formation prior to the perovskite SrBi₂Nb₂O₉ phase was analyzed by both the XRD and high-resolution transmission electron microscopy. Dielectric and the optical properties (transmission, optical band gap and Urbach energy) of these samples have been found to be compositional dependent. Refractive index was measured and compared with the values predicted by Wemple-Didomemenico and Gladstone-Dale relations. The glass nanocomposites comprising nanometer-sized crystallites of fluorite phase were found to be nonlinear optic active.

Original language	English
Pages (from-to)	209-215
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	173
Issue number	1
DOIs	https://doi.org/10.1016/S0022-4596(03)00026-4
Publication status	Published - Jun 2003
Externally published	Yes

Keywords

Dielectric
Ferroelectric
Fluoride like phase
Glassnanocomposites
Second harmonic generation
SrBiNbO

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Physical and Theoretical Chemistry
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1016/S0022-4596(03)00026-4

Cite this

@article{ce14f3bd0bbd41a0b80df220645043ca,

title = "Evolution and characterization of fluorite-like nano-SrBi2Nb2O9 phase in the SrO-Bi2O3-Nb2O 5-Li2B4O7 glass system",

abstract = "Transparent glasses of various compositions in the system (100-x)Li2B4O7-x (SrO-Bi2O3-Nb2O5) (where x=10, 20, 30, 40, 50 and 60, in molar ratio) were fabricated via splat quenching technique. The glassy nature of the as-quenched samples was established by differential thermal analyses. X-ray powder diffraction (XRD) and transmission electron microscopic studies confirmed the amorphous nature of the as-quenched and crystallinity in the heat-treated samples. Fluorite phase formation prior to the perovskite SrBi2Nb2O9 phase was analyzed by both the XRD and high-resolution transmission electron microscopy. Dielectric and the optical properties (transmission, optical band gap and Urbach energy) of these samples have been found to be compositional dependent. Refractive index was measured and compared with the values predicted by Wemple-Didomemenico and Gladstone-Dale relations. The glass nanocomposites comprising nanometer-sized crystallites of fluorite phase were found to be nonlinear optic active.",

keywords = "Dielectric, Ferroelectric, Fluoride like phase, Glassnanocomposites, Second harmonic generation, SrBiNbO",

author = "{Syam Prasad}, N. and Varma, {K. B.R.} and Y. Takahashi and Y. Benino and T. Fujiwara and T. Komatsu",

note = "Funding Information: The authors thank the Council of Scientific and Industrial Research (CSIR), Government of India for financial grant. One of the authors (Syam Prasad) acknowledges the University Grants Commission (UGC), Government of India, for a research fellowship. Also, the authors are grateful to Mr. Upadhyaya for his help in refractive index measurement.",

year = "2003",

month = jun,

doi = "10.1016/S0022-4596(03)00026-4",

language = "English",

volume = "173",

pages = "209--215",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Academic Press Inc.",

number = "1",

}

TY - JOUR

T1 - Evolution and characterization of fluorite-like nano-SrBi2Nb2O9 phase in the SrO-Bi2O3-Nb2O 5-Li2B4O7 glass system

AU - Syam Prasad, N.

AU - Varma, K. B.R.

AU - Takahashi, Y.

AU - Benino, Y.

AU - Fujiwara, T.

AU - Komatsu, T.

N1 - Funding Information: The authors thank the Council of Scientific and Industrial Research (CSIR), Government of India for financial grant. One of the authors (Syam Prasad) acknowledges the University Grants Commission (UGC), Government of India, for a research fellowship. Also, the authors are grateful to Mr. Upadhyaya for his help in refractive index measurement.

PY - 2003/6

Y1 - 2003/6

N2 - Transparent glasses of various compositions in the system (100-x)Li2B4O7-x (SrO-Bi2O3-Nb2O5) (where x=10, 20, 30, 40, 50 and 60, in molar ratio) were fabricated via splat quenching technique. The glassy nature of the as-quenched samples was established by differential thermal analyses. X-ray powder diffraction (XRD) and transmission electron microscopic studies confirmed the amorphous nature of the as-quenched and crystallinity in the heat-treated samples. Fluorite phase formation prior to the perovskite SrBi2Nb2O9 phase was analyzed by both the XRD and high-resolution transmission electron microscopy. Dielectric and the optical properties (transmission, optical band gap and Urbach energy) of these samples have been found to be compositional dependent. Refractive index was measured and compared with the values predicted by Wemple-Didomemenico and Gladstone-Dale relations. The glass nanocomposites comprising nanometer-sized crystallites of fluorite phase were found to be nonlinear optic active.

AB - Transparent glasses of various compositions in the system (100-x)Li2B4O7-x (SrO-Bi2O3-Nb2O5) (where x=10, 20, 30, 40, 50 and 60, in molar ratio) were fabricated via splat quenching technique. The glassy nature of the as-quenched samples was established by differential thermal analyses. X-ray powder diffraction (XRD) and transmission electron microscopic studies confirmed the amorphous nature of the as-quenched and crystallinity in the heat-treated samples. Fluorite phase formation prior to the perovskite SrBi2Nb2O9 phase was analyzed by both the XRD and high-resolution transmission electron microscopy. Dielectric and the optical properties (transmission, optical band gap and Urbach energy) of these samples have been found to be compositional dependent. Refractive index was measured and compared with the values predicted by Wemple-Didomemenico and Gladstone-Dale relations. The glass nanocomposites comprising nanometer-sized crystallites of fluorite phase were found to be nonlinear optic active.

KW - Dielectric

KW - Ferroelectric

KW - Fluoride like phase

KW - Glassnanocomposites

KW - Second harmonic generation

KW - SrBiNbO

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