FIELD EMISSION STUDIES OF THE SURFACE MIGRATION OF REFRACTORY METALS.

Abstract

A study and measurement of surface properties associated with the self-surface migration of several of the refractory metals has been made using pulsed field-electron emission techniques. Values of some of the surface migration constants are given for tungsten, rhenium, iridium and rhodium. A transient effect in the emitter 'ring rate' has been studied and it is proposed that this effect is associated with the relative variation of surface tension with crystal direction which takes place when the temperature is changed. (Author)

Document Details

Document Type
Technical Report
Publication Date
Oct 06, 1967
Accession Number
AD0660129

Entities

People

  • Philip C. Bettler

Organizations

  • University of Nevada, Reno

Tags

DTIC Thesaurus Topics

  • Electron Emission
  • Electrons
  • Emission
  • Emitters
  • Field Emission
  • Metals
  • Migration
  • Photoexcitation
  • Refractory Metals
  • Surface Properties
  • Surface Tension
  • Tungsten

Fields of Study

  • Physics

Readers

  • Materials Science and Engineering.
  • Plasma Physics.

Technology Areas

  • Microelectronics