Transparent optical nonlinear crystallised glasses with ferroelectric LaBGeO5

Y. Takahashi; Y. Benino; V. V. Dimitrov; T. Komatsu

Transparent optical nonlinear crystallised glasses with ferroelectric LaBGeO₅

Y. Takahashi, Y. Benino, V. V. Dimitrov, T. Komatsu

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

Abstract

Transparent, surface crystallised glasses containing a ferroelectric LaBGeO₅ crystalline phase were successfully prepared through a two-step heat treatment in air (e.g. 670°C+750°C) for 25La₂O_3·25B₂O_3·50Ge O₂ glass. The temperature of maximum nucleation rate was determined to be 670°C, from differential thermal analysis, which is consistent with the glass transition temperature. The LaBGeO₅ crystalline phase was confirmed to be formed within the surface region to a depth of about 60 μm. The bulk crystallised glasses, obtained by heat treatments around the crystallisation temperature, were opaque. The second harmonic intensity from the transparent crystallised glasses was of the order of 11100 of that for α-quartz SiO₂. Transparent surface crystallised glasses with La_1-xGd_xBGeO₅ crystalline phases were also fabricated through a two-step heat treatment.

Original language	English
Pages (from-to)	225-228
Number of pages	4
Journal	Physics and Chemistry of Glasses
Volume	41
Issue number	5
Publication status	Published - 2000 Dec 1
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Physical and Theoretical Chemistry

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title = "Transparent optical nonlinear crystallised glasses with ferroelectric LaBGeO5",

abstract = "Transparent, surface crystallised glasses containing a ferroelectric LaBGeO5 crystalline phase were successfully prepared through a two-step heat treatment in air (e.g. 670°C+750°C) for 25La2O3·25B2O3·50Ge O2 glass. The temperature of maximum nucleation rate was determined to be 670°C, from differential thermal analysis, which is consistent with the glass transition temperature. The LaBGeO5 crystalline phase was confirmed to be formed within the surface region to a depth of about 60 μm. The bulk crystallised glasses, obtained by heat treatments around the crystallisation temperature, were opaque. The second harmonic intensity from the transparent crystallised glasses was of the order of 11100 of that for α-quartz SiO2. Transparent surface crystallised glasses with La1-xGdxBGeO5 crystalline phases were also fabricated through a two-step heat treatment.",

author = "Y. Takahashi and Y. Benino and Dimitrov, {V. V.} and T. Komatsu",

year = "2000",

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TY - JOUR

T1 - Transparent optical nonlinear crystallised glasses with ferroelectric LaBGeO5

AU - Takahashi, Y.

AU - Benino, Y.

AU - Dimitrov, V. V.

AU - Komatsu, T.

PY - 2000/12/1

Y1 - 2000/12/1

N2 - Transparent, surface crystallised glasses containing a ferroelectric LaBGeO5 crystalline phase were successfully prepared through a two-step heat treatment in air (e.g. 670°C+750°C) for 25La2O3·25B2O3·50Ge O2 glass. The temperature of maximum nucleation rate was determined to be 670°C, from differential thermal analysis, which is consistent with the glass transition temperature. The LaBGeO5 crystalline phase was confirmed to be formed within the surface region to a depth of about 60 μm. The bulk crystallised glasses, obtained by heat treatments around the crystallisation temperature, were opaque. The second harmonic intensity from the transparent crystallised glasses was of the order of 11100 of that for α-quartz SiO2. Transparent surface crystallised glasses with La1-xGdxBGeO5 crystalline phases were also fabricated through a two-step heat treatment.

AB - Transparent, surface crystallised glasses containing a ferroelectric LaBGeO5 crystalline phase were successfully prepared through a two-step heat treatment in air (e.g. 670°C+750°C) for 25La2O3·25B2O3·50Ge O2 glass. The temperature of maximum nucleation rate was determined to be 670°C, from differential thermal analysis, which is consistent with the glass transition temperature. The LaBGeO5 crystalline phase was confirmed to be formed within the surface region to a depth of about 60 μm. The bulk crystallised glasses, obtained by heat treatments around the crystallisation temperature, were opaque. The second harmonic intensity from the transparent crystallised glasses was of the order of 11100 of that for α-quartz SiO2. Transparent surface crystallised glasses with La1-xGdxBGeO5 crystalline phases were also fabricated through a two-step heat treatment.

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