金属玻璃结构对二次电子发射特性(SEEP)的影响  

The Effect of the Structure of Metallic Glassy Alloys on SEEP

作　　者：杨德清[1] 冯本政[2] 

机构地区：[1]云南大学物理系 [2]昆明贵金属研究所

出　　处：《云南大学学报（自然科学版）》1989年第3期223-228,共6页Journal of Yunnan University(Natural Sciences Edition)

摘　　要：本文报道用DC电子枪法经熔融自旋技术制备的Cu_■-Ti_■Pd_(135)-Si_(165)和Pd_(775)-Ni_(60)-Si_(165)三种金属玻璃,在非晶和晶态下的二次电子发射特性(SEEP)和二次电子能量分布(SEED)进行了测试,结果表明:前两种在非晶态下的δ_■wfh值比晶态下略大8％和28％ 相应的E_(pm)均为200eV:而后者则不同,在非晶态下的δ_m值仅为晶态时的60％相应的E_(pm)在非晶时为900eV。在晶态时为200eV:三种金属的玻璃的SEED在非晶和晶态下也不一样,其峰值在非晶态下比在晶态下低2～3eV;半宽度有的增加有的则减少,表明金属玻璃结构对SEEP和SEED有较大影响。SEEP and SEED in Cu70-Ti30, Pd83.5-Ni16.5 and Pd77.5-Ni6.0-Si165 metallic glassy alloys prepared by melt spining technique, as well as after crystalline trunsition have been measured by DC electronicc gun method. The results show that the coefficient of the secondary electron emission σm of Cu70-Ti30 and Pd83.5-Sil6.5 glassy alloys is more 8% and 28% than that of crystalline state, Epm is same in glassy and crystalline state, Epm = 200eV; σm value of Pd775-Ni60-Si16.5 glassy alloys ' is less 60% than that of crystalline state, and Epmvalue in glassy state is 200eV, and 900eV in crystalline state. Their SEED is different in amorphous state and crystalline state; The peak value of SEED in amorphous state is lower 2- 3 eV than that of crystalline state, and half-width being increase or reduce. The effect of the structure of metallic glassy alloys on SEEP and SEED is larger.

关 键 词：金属玻璃 结构 次级发射特性 二次电子能量分布 

分 类 号：N55[自然科学总论]