Self-recovery function of p(1x1)-Sc-O/W(100) system used as Schottky emitter

被引：7
|
作者：
Lida, S [1 ]
Nagatomi, T [1 ]
Takai, Y [1 ]
机构：
[1] Osaka Univ, Grad Sch Engn, Dept Mat & Life Sci, Suita, Osaka 5650871, Japan
来源：
SURFACE AND INTERFACE ANALYSIS | 2005年 / 37卷 / 02期
关键词：
Auger electron spectroscopy; low-energy electron diffraction; surface segregation; scandium; oxygen; tungsten; Schottky emitter;
D O I：
10.1002/sia.1942
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The effects of heating temperature for the preparation of an Sc-O/W(100) surface were investigated. Surface properties of the Sc-O/W(100) surface prepared by heating at 1600 and 1700 K were significantly different from those prepared at 1500 K, which is the operating temperature of the Sc-O/W(100) emitter. By heating at similar to1700 K the p(1 x 1) structure formed by Sc-O complexes was confirmed, whereas the p(2 x 1)-p(1 x 2) double-domain structure was obtained by heating at similar to1500K. The surface properties prepared by heating at 1700 K were found to be very stable, and the surface has a self-recovery function against residual gas ion sputtering at the operating temperature of the emitter. The present results strongly suggested that pretreatment of the Sc-O/W(100) emitter by heating at 1700 K and device operation at similar to1500 K result in high reproducibility of the superior electron emission property of the Sc-O/W(100) emitter. Copyright (C) 2005 John Wiley Sons, Ltd.
引用
收藏
页码：106 / 109
页数：4
相关论文
共 30 条
  • [1] Self-recovery function of Sc-O/W(100) system as Schottky emitter
    Iida, S
    Tsujita, T
    Nagatomi, T
    Takai, Y
    SURFACE SCIENCE, 2003, 543 (1-3) : 1 - 4
  • [2] Surface structure of Sc-O/W(100) system used as Schottky emitter at high temperature
    Iida, S
    Nakanishi, Y
    Nagatomi, T
    Takai, Y
    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2004, 43 (9A): : 6352 - 6353
  • [3] Phase transition on the surface of Sc-O/W(100) Schottky emitter
    Nakanishi, Y
    Nagatomi, T
    Takai, Y
    SURFACE SCIENCE, 2005, 595 (1-3) : 97 - 106
  • [4] Surface atoms in Sc-O/W(100) system as Schottky emitter at high temperature
    Tsujita, T
    Iida, S
    Nagatomi, T
    Takai, Y
    SURFACE SCIENCE, 2003, 547 (1-2) : 99 - 107
  • [5] Characterization of Sc-O/W(100) surface as Schottky emitter: Work function change for activation processing
    Kawano, Takashi
    Takai, Yoshizo
    Shimizu, Ryuichi
    1600, JJAP, Tokyo, Japan (39):
  • [6] Characterization of Sc-O/W(100) surface as Schottky emitter: Work function change for activation processing
    Kawano, T
    Takai, Y
    Shimizu, R
    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 2000, 39 (2A): : 577 - 580
  • [7] Effects of oxygen atmosphere on surface properties of Sc-O/W(100) system as Schottky emitter at high temperature
    Nakanishi, Y.
    Nagatomi, T.
    Takai, Y.
    SURFACE AND INTERFACE ANALYSIS, 2006, 38 (12-13) : 1594 - 1597
  • [8] Surface properties of Sc-O/W(100) system as emitter at room and high temperatures
    Nagatomi, T
    Iida, S
    Tsujita, T
    Takai, Y
    SURFACE SCIENCE, 2003, 523 (1-2) : L37 - L40
  • [9] Surface energy bands of p(1x1)Cr(100) and p(1x1)O/Cr(100)
    Nakajima, H
    Pukird, S
    Saitoh, T
    Kakizaki, A
    Ishii, T
    JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, 2005, 144 : 409 - 412
  • [10] Low-energy electron diffraction study of atomic structure of Sc-O/W(100) surface acting as Schottky emitter at high temperatures
    Iida, S
    Tsujita, T
    Nagatomi, T
    Takai, Y
    SURFACE AND INTERFACE ANALYSIS, 2003, 35 (01) : 7 - 10
123