THERMAL FIELD-EMISSION OBSERVATION OF SINGLE-CRYSTAL LAB6

被引：18

作者：

NAGATA, H

HARADA, K

SHIMIZU, R

机构：

[1] Department of Applied Physics, Faculty of Engineering, Osaka University, Suita, Osaka 565

来源：

JOURNAL OF APPLIED PHYSICS | 1990年 / 68卷 / 07期

关键词：

D O I：

10.1063/1.346322

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

TFE (thermal field emission) properties of LaB6 〈100〉 and 〈310〉 single crystals were investigated by emission pattern observation. It was found that field evaporation with the tip temperature held at ∼1500 °C is very useful to get a clean pattern of fourfold symmetry. Each of four bright spots in the clean pattern was presumed to correspond to 〈310〉 emission. It is proposed, as the most appropriate operating condition, to use the 〈310〉LaB6 tip at a temperature ∼1000 °C in vacuum of 10-9 Torr region, promising a new TF emitter of high brightness and stability for practical use.

引用

页码：3614 / 3618

页数：5

共 16 条

[1] DIRECT OBSERVATION OF LAB6(001) SURFACE AT HIGH-TEMPERATURES BY X-RAY AND ULTRAVIOLET PHOTOELECTRON-SPECTROSCOPY, LOW-ENERGY ELECTRON-DIFFRACTION, AUGER-ELECTRON SPECTROSCOPY, AND WORK-FUNCTION MEASUREMENTS [J].