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Preparation and properties of BaTiSi_2O_7 glass-ceramics

机译：BaTiSi_2O_7微晶玻璃的制备及性能

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摘要

New lead-free dielectric materials attract great attention for their excellent environment amiability. Pyramid [TiO_5] groups existing in BaTiSi_2O_7 and fresnoite were the characteristic of dielectric materials with spontaneous polarization. However, it was difficult to prepare BaTiSi_2O_7 ceramics because the phase was unstable below the temperature of 655 ℃. In this paper, the glass-ceramics with BaTiSi_2O_7 phase were prepared in a controlled crystallization process, and its dielectric permittivity was measured. With FTIR and XRD, the characteristics of the glass-ceramics were studied. Through the calculation on the lattice deformation in the two types of glass-ceramics, it was concluded that the existence of BaTiSi_2O_7 in the glass-ceramics was the result of the stress-controlled condition of the remnant glassy matrix.
机译：新型无铅介电材料因其出色的环境友好性而备受关注。 BaTiSi_2O_7中存在的金字塔[TiO_5]基团和菲涅矿是自发极化的介电材料的特征。然而，由于在655℃以下温度下相不稳定，因此难以制备BaTiSi_2O_7陶瓷。本文通过控制结晶过程制备了具有BaTiSi_2O_7相的玻璃陶瓷，并测量了其介电常数。用FTIR和XRD研究了微晶玻璃的特性。通过对两种类型的玻璃陶瓷晶格变形的计算，可以得出结论，玻璃陶瓷中BaTiSi_2O_7的存在是残余玻璃态基质受应力控制的结果。

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