Structural and electrical properties of SiO2</sub>–Li2</sub>O–Nb2</sub>O5</sub> glass and glass-ceramics obtained by thermoelectric treatments

M. P. F. Gra?a; M. G. Ferreira da Silva; M. A. Valente

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Structural and electrical properties of SiO2–Li2O–Nb2O5 glass and glass-ceramics obtained by thermoelectric treatments

机译：热电处理得到的SiO2 –Li2 O–Nb2 O5 玻璃和玻璃陶瓷的结构和电性能

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Glass and glass-ceramics with the molar composition of 60SiO2–30Li2O–10Nb2O5 (mole %) were studied. Ferroelectric lithium niobate (LiNbO3) nanocrystals were precipitated in the glass matrix trough a thermal treatment, with and without the simultaneous application of an external electric field. The as-prepared sample, yellow and transparent, was heat-treated (HT) at 600 and 650 °C and thermoelectric treated (TET) at 600 °C. The applied electric fields were the following ones: (i) 5 × 104 V/m; (ii) 1 × 105 V/m. Differential thermal analysis (DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman and dielectric spectroscopies were used to investigate the glass samples properties.

机译：研究了摩尔比为60SiO2 –30Li2 O–10Nb2 O5 的玻璃和玻璃陶瓷。在有或没有同时施加外部电场的情况下，通过热处理使铁电铌酸锂（LiNbO3 ）纳米晶体沉淀在玻璃基质中。所制备的黄色和透明样品在600和650°C进行了热处理（HT），在600°C进行了热电处理（TET）。施加的电场如下：（i）5×104 V / m；（ii）1×105 V / m。使用差示热分析（DTA），X射线衍射（XRD），扫描电子显微镜（SEM），拉曼光谱和介电光谱法研究了玻璃样品的性能。

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《Journal of Materials Science》 |2007年第8期|2543-2550|共8页
作者
M. P. F. Gra?a; M. G. Ferreira da Silva; M. A. Valente;
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Physics department (FSCOSD) Aveiro University Campus Universitário de Santiago Aveiro 3800-193 Portugal;

Glass and ceramic engineering department (CICECO) Aveiro University 3800-193 Aveiro Portugal;

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1. Structural and electrical properties of SiO2-Li2O-Nb2O5 glass and glass-ceramics obtained by thermoelectric treatments [J] . Graca MPF, da Silva MGF, Valente MA Journal of Materials Science . 2007,第8期

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Structural and electrical properties of SiO2–Li2O–Nb2O5 glass and glass-ceramics obtained by thermoelectric treatments

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