The solid reaction synthetic process , sintering properties and phase composition of the lsgm samples are investigated by tg - dta , sem , xrd and the archimedes method . the results reveal that the sintering technology generated significant influence on the sintering properties of the lsgm samples . the optimum synthesis parameters to prepare lsgm electrolyte with a pure perovskite - type structure were ascertained ; the sintering temperature and chemical constitution contributed greatly to the phase composition , the solid solubility limit of lsgm electrolyte increased with increasing of the sintering temperature , and we made lsgm electrolyte of single - perovskite structure above 1400 # 本文采用改进埋烧法制备出la _ ( 0 . 8 ) sr _ ( 0 . 2 ) ga _ ( 1 - y ) mg _ yo _ 3 ( lsgm )电解质，对制备方法与工艺参数、材料结构、电学性能以及热学性能进行了研究，分析了组成、结构与导电性能的关系，探讨了离子传输机制，其目的在于为该类离子导体的进一步研究和应用提供实验和理论依据。
Based on laser molecular beam epitaxy , the strain behavior and the corresponding control technology in oxides heteroepitaxial system , especially in ferroelectric thin films with perovskite structure , was systematically studied by using in situ reflected - high - energy - electron - diffraction ( rheed ) . some original and meaningful results were obtained . following aspects were included in this dissertation : the structure of thin films is analyzed by rheed 本论文基于激光分子束外延的基本原理,以高能电子反射为主要监测工具,对氧化物薄膜特别是铁电氧化物薄膜异质外延过程中应变行为及其控制方法进行了系统的研究,并取得了一系列有意义的结果,主要包括以下内容:利用反射高能电子衍射( rheed )的信息对薄膜结构进行分析。
