Abstract
In order to increase the content of rare-earth oxides in magneto-optical glass and improve the Verdet constant, the rare-earth doped ternary Ga2O3-B2O3-SiO2(GBS) system magneto-optical glasses were prepared by the melt quenching technique. The influence of Tb3+ and Dy3+ ions on the structure of GBS glasses was investigated using FTIR, DSC and Faraday rotations. The experimental results showed that the content of rare-earth oxides in the glasses with the double incorporation of Tb2O3 and Dy2O3 was higher. The crystallization parameter β achieved the maximum 0.48 with Tb3+/Dy3+ content of 35mol%. Terbium oxide existed mainly in [TbO3] units in the glasses and [TbO4] units were converted into [TbO3] with increasing Tb2O3 content. As Ga3+ ion is larger than B3+ ion in radius, leading to an increasing of the glass network gap and improvement in the ability of accommodating rare earth ions, Verdet constant increased.
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Funded by the International Exchanges and Cooperation Projects (No.2009DFR50520), the Optional Research Project of Shaanxi University of Science and Technology (ZX/11-13), and the Scientific Research Initial Funding of Shaanxi University of Science and Technology (BJ12-01)
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Yin, H., Zhao, G., Liu, P. et al. Preparation and performance of magneto-optical glasses doped with Tb3+/Dy3+ . J. Wuhan Univ. Technol.-Mat. Sci. Edit. 29, 684–687 (2014). https://doi.org/10.1007/s11595-014-0980-x
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DOI: https://doi.org/10.1007/s11595-014-0980-x