Nonlinear-optic and ferroelectric behavior of lithium borate-strontium bismuth tantalate glass-ceramic composite

G. Senthil Murugan; K. B.R. Varma; Yoshihiro Takahashi; Takayuki Komatsu

doi:10.1063/1.1380237

Nonlinear-optic and ferroelectric behavior of lithium borate-strontium bismuth tantalate glass-ceramic composite

G. Senthil Murugan, K. B.R. Varma, Yoshihiro Takahashi, Takayuki Komatsu

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

86 Citations (Scopus)

Abstract

Transparent glasses in the system (100-x) Li₂B₄O₇-_xSrBi₂Ta ₂O₉ (0≤x≤20) were fabricated via a splat-quenching technique. The glassy nature of the as-quenched samples was established by differential thermal analyses. X-ray powder diffraction and transmission electron microscopic studies confirmed the amorphous nature of the as-quenched and crystallinity (40 nm) in the heat-treated (glass-ceramic) samples. The dielectric constant (∈_r) of the glass-ceramic composite (x = 20, heat treated at 773 K/8 h) was in between that of the parent host glass (Li₂B₄O₇) and strontium bismuth tantalate ceramics in the frequency range 100 Hz-40 MHz at 300 K. These exhibited intense second-harmonic generation and a ferroelectric hysteritic behavior (P vs E loops) at 300 K. The coercive field (E_c) and the remnant polarization (P_r) were 1053 V/cm and 0.483 μC/cm², respectively.

Original language	English
Pages (from-to)	4019-4021
Number of pages	3
Journal	Applied Physics Letters
Volume	78
Issue number	25
DOIs	https://doi.org/10.1063/1.1380237
Publication status	Published - 2001 Jun 18
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "Nonlinear-optic and ferroelectric behavior of lithium borate-strontium bismuth tantalate glass-ceramic composite",

abstract = "Transparent glasses in the system (100-x) Li2B4O7-xSrBi2Ta 2O9 (0≤x≤20) were fabricated via a splat-quenching technique. The glassy nature of the as-quenched samples was established by differential thermal analyses. X-ray powder diffraction and transmission electron microscopic studies confirmed the amorphous nature of the as-quenched and crystallinity (40 nm) in the heat-treated (glass-ceramic) samples. The dielectric constant (∈r) of the glass-ceramic composite (x = 20, heat treated at 773 K/8 h) was in between that of the parent host glass (Li2B4O7) and strontium bismuth tantalate ceramics in the frequency range 100 Hz-40 MHz at 300 K. These exhibited intense second-harmonic generation and a ferroelectric hysteritic behavior (P vs E loops) at 300 K. The coercive field (Ec) and the remnant polarization (Pr) were 1053 V/cm and 0.483 μC/cm2, respectively.",

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AU - Murugan, G. Senthil

AU - Varma, K. B.R.

AU - Takahashi, Yoshihiro

AU - Komatsu, Takayuki

PY - 2001/6/18

Y1 - 2001/6/18

N2 - Transparent glasses in the system (100-x) Li2B4O7-xSrBi2Ta 2O9 (0≤x≤20) were fabricated via a splat-quenching technique. The glassy nature of the as-quenched samples was established by differential thermal analyses. X-ray powder diffraction and transmission electron microscopic studies confirmed the amorphous nature of the as-quenched and crystallinity (40 nm) in the heat-treated (glass-ceramic) samples. The dielectric constant (∈r) of the glass-ceramic composite (x = 20, heat treated at 773 K/8 h) was in between that of the parent host glass (Li2B4O7) and strontium bismuth tantalate ceramics in the frequency range 100 Hz-40 MHz at 300 K. These exhibited intense second-harmonic generation and a ferroelectric hysteritic behavior (P vs E loops) at 300 K. The coercive field (Ec) and the remnant polarization (Pr) were 1053 V/cm and 0.483 μC/cm2, respectively.

AB - Transparent glasses in the system (100-x) Li2B4O7-xSrBi2Ta 2O9 (0≤x≤20) were fabricated via a splat-quenching technique. The glassy nature of the as-quenched samples was established by differential thermal analyses. X-ray powder diffraction and transmission electron microscopic studies confirmed the amorphous nature of the as-quenched and crystallinity (40 nm) in the heat-treated (glass-ceramic) samples. The dielectric constant (∈r) of the glass-ceramic composite (x = 20, heat treated at 773 K/8 h) was in between that of the parent host glass (Li2B4O7) and strontium bismuth tantalate ceramics in the frequency range 100 Hz-40 MHz at 300 K. These exhibited intense second-harmonic generation and a ferroelectric hysteritic behavior (P vs E loops) at 300 K. The coercive field (Ec) and the remnant polarization (Pr) were 1053 V/cm and 0.483 μC/cm2, respectively.

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Nonlinear-optic and ferroelectric behavior of lithium borate-strontium bismuth tantalate glass-ceramic composite

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