Structure and properties of non-silicate oxide glasses having new functions

本文研究了不含SiO_2、B_2O_3、GeO_2、P_2O_5和As_2O_3等常规网络形成物的没食子酸盐、铝酸盐和钛酸盐玻璃的结构。这些玻璃具有红外透过率和离子导电性，对玻璃结构的研究将有助于材料设计，即探索组成与特征性能之间的关系。对碱土和碱土组成的二元和三元玻璃进行了X射线径向分布分析、拉曼光谱和X射线荧光化学位移的测量。铝酸盐和钛酸盐，以阐明它们的结构。结果表明，在所有这些玻璃中，大多数可能形成玻璃网络的主要阳离子，即Ga^&lt；3+&gt；，Al^&lt；3+&gt；和Ti&lt；@14+&lt；@d1离子，相对于氧以四种配位方式存在。这表明Zachariasen关于玻璃形成和玻璃网络的理论同样适用于没食子酸盐、铝酸盐和钛酸盐玻璃。Zachariaxen的理论指出，当金属阳离子与氧有少量配位数(3或4)时，氧化物玻璃的形成，多面体结构单元MO3和MO4，其中M是金属原子，连接在多面体的角落，共享一个氧。除了玻璃结构外，还研究了没食子酸盐和铝酸盐玻璃的密度、热膨胀和电学组成的关系。通过上述研究，使没食子酸盐、铝酸盐和钛酸盐玻璃的材料设计成为可能。

This study has been undertaken to find the structure of gallate, aluminate and titanate glasses which do not contain conventional network formers such as SiO_2, B_2O_3, GeO_2, P_2O_5 and As_2O_3. These glasses are characterized by infrared transmittance and ionic conduction and the study of the structure of the glasses is expected to contribute to materials design, that is, to exploring the relation between the composition and characteristic properties.X-ray radial distribution analysis, Raman spectroscopy and measurement of chemical shift of X-ray fluorescence have been made on binary and ternary glasses of the compositions of alkali or alkaline earth gallates, aluminates and titanates to elucidate their structure. It has been found that in all those glasses most of the major cations, that is, Ga^<3+>, Al^<3+> and Ti<@14+<@D1 ions that may assumingly form glass networks are in four coordination relative to oxygens. This indicates that Zachariasen's theory on glass formation and glass networks is also valid for gallate, aluminate and titanate glasses. Zachariaxen's theory states that oxide glass formation occurs when metal cations have a small coordination number (3 Or 4) with oxygen and polyhedral structural units MO3 and MO4, Where M is a metallic atom, are connected at the corner of the polyhedron, sharing an oxygen. Besides the glass structrues, the composition dependences of density, thermal expansion and electrical ave also been investigated in gallate and aluminate glasses. As a result of the above mentioned studies, the materials design of gallate, aluminate and titanate glasses became possible.