采用热分析，原位XPS等方法对Mo-La203阴极中La的价态进行了研究，探讨了陔阴极的发射机理实验结果表明，在高温下La203可以被M02C还原成单质La。La2O3-Mo阴极的发射可用原子膜机理解释：住阴极工作过程中，还原得到的La覆盖在Mo基体表面，降低了基体Mo的逸出功，促进了阴极的发射。根据此机理提出r La203-Mo电于管制备和运行工艺，使电子管的工作寿命提高到了满足实际应用要求的水平。

用溶胶-凝胶（Sol-Gel）法制备了RE（RE=La，Y）-Mo复合氧化物粉末，工艺条件：初始溶液pH值=1，于550℃分解胶体，500℃，900℃2次还原粉末。采用XRD，TEM对还原后粉末的相组成、形貌、粒度进行分析。结果表明：500℃还原后，单质Mo衍射峰出现，RE以非晶态RE-O-Mo存在；900℃2次还原后，RE 以氧化物形式存在。红外光谱（FT-IR）分析结果表明，La和Y通过O与Mo键合，削弱Mo=O键，使稀土钼复合氧化物可还原性增强。TEM分析表明，还原后稀土钼粉末粒径在70nm左右。

By selecting polycrystalline Ag as the substrates, highly c-axis(O01) textured YBCO films have been fabricated by using a modified magnetron sputtering equipment. Research on the textures of cold rolling Ag at different deformation degree and recrystallization textures of cold-rolling Ag at different temperature shows that in-plane alignment of YBCO film is difficult to obtain directly on cold rolling Ag substrates because of a series of change of textures in Ag during heating. The sharp recrystallization textures with cube (001)[010] and rotated cube(001)[012] in Ag have been developed. Experiments offer a possible prospect for the further study of fabricating sharp biaxially texture in Ag and the following deposition of high J YBCO films directly on it.