Studies on Middle Range Structure of Amorphous Inorganic Materials and its Controlling

非晶无机材料中程结构及其控制研究

基本信息

批准号：
63430014
负责人：
SOGA Naohiro
金额：
$ 17.79万
依托单位：
Kyoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (A)
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1990
项目状态：
已结题

项目摘要

Amorphous oxides and fluorides were prepared by using twin-roller quenching, sputtering and sol-gel method. Several spectroscopic studies and measurements of physical properties were carried out on the resultant amorphous materials to obtain middle range structure of these materials and to discuss the relation between the structure and the properties. The results obtained are as follows.1. High ionic conductivity was observed in MnF_2-MnO-SiO_2 and MnF_2-PbF_2-SiO_2 glasses prepared by the twin-roller quenching method. It was revealed from XPS measurements that the fluoride ions occupy two kinds of sites in these oxyflouride glasses and fluoride ions in one of the two sites contribute to the high ionic conductivity. This aspect on the chemical state of fluoride ions was coincident with the result obtained by the molecular dynamics simulation.2. Mossbauer measurements were carried out on oxide glasses, silica gel, amorphous alloys and oxide crystals containing iron or europium. The bonding characteristics of iron and europium in these materials were discussed systematically.3. It was discovered for the first time that upconversion-pumped fluorescence takes place in some oxide glasses even at room temperature. The lattice vibrational energy and the strength of electron-phonon interaction in the oxide glasses were clarified from phonon sideband spectra. On the basis of the experimental results, the origin of appearance of the upconversion-pumped fluorescence was discussed.4. The work of fracture for soda borate glasses was measured using short-bar specimens with chevron notch. An inelastic phenomenon was observed in the boron oxide-rich glass.

使用双旋转剂淬火，溅射和溶胶 - 凝胶法制备无定形的氧化物和氟化物。对所得的无定形材料进行了几项光谱研究和物理特性的测量，以获得这些材料的中间范围结构，并讨论结构与特性之间的关系。获得的结果如下1。在MNF_2-MNO-SIO_2和MNF_2-PBF_2-SIO_2玻璃杯中观察到高离子电导率。从XPS的测量中揭示了氟化物离子在这些氧气玻璃杯中占据了两种位点和两个位点之一中的氟化物离子，这有助于高离子电导率。在氟化物离子化学状态的方面与分子动力学模拟获得的结果一致。2。在氧化物玻璃，硅胶，无定形合金和含铁或欧洲蛋白酶的氧化物晶体上进行了摩斯鲍尔测量。系统地讨论了这些材料中铁和欧洲的粘结特性3。它是在室温下甚至在某些氧化物玻璃杯中首次发现上转换的荧光。从声子侧带光谱中阐明了氧化物玻璃杯中的晶格振动能和电子形成相互作用的强度。基于实验结果，讨论了上转换荧光的外观的起源。4。使用带字形凹槽的短杆标本测量了苏打硼玻璃的骨折工作。在富含硼氧化物的玻璃中观察到无弹性现象。