Vacuum discharge from perovskite oxide electrodes

Author

Shkuratov, Sergei I.

Author_Institution

Inst. of Electrophys., Acad. of Sci., Ekaterinburg, Russia

Volume

25

Issue

4

fYear

1997

fDate

8/1/1997 12:00:00 AM

Firstpage

521

Lastpage

526

Abstract

This paper presents results of the investigation of electrical discharge in vacuum from perovskite-like La_0.7Sr_0.3CoO₃ and YBa₂Cu ₃O_6.95 electrodes. Data are given on the local chemical composition of cathode surfaces subjected to nanosecond high-current arc discharges and on the erosion of ceramic cathode materials. The results of measurements of the work function and of the emission capability of extended ceramic cathodes and of field emission characteristics of clean surfaces of perovskite-like oxides are presented. A comparative analysis has been carried out of the behavior of ceramic cathodes with results obtained from the discharge of metallic electrodes

Keywords

barium compounds; electrodes; electron field emission; high-temperature superconductors; lanthanum compounds; strontium compounds; vacuum arcs; work function; yttrium compounds; La_0.7Sr_0.3CoO₃; YBa₂Cu₃O_6.95; cathode surfaces; electrical discharge; emission capability; erosion; extended ceramic cathodes; field emission characteristics; high-temperature superconductor; local chemical composition; metallic electrodes; nanosecond high-current arc discharges; perovskite oxide electrodes; vacuum discharge; Cathodes; Ceramics; Crystallization; Electrodes; Electron emission; Scanning electron microscopy; Strontium; Superconducting materials; Surface cleaning; Surface discharges;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/27.640659

Filename

640659