Remolding of <310>-Tungsten Tip in Field-Ion Microscope

概要

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The field emitter of the <310>-oriented tungsten was remolded in situ in the field-ion microscope. The remolding was most successful when the electric field of 100 MV/cm was applied to the emitter kept at about 1620 K. The micro-protrusion was formed on the (100) plane if the remolding was carried out in high vacuum (10^<-8> Torr) and on the (310) plane in ultra-high vacuum (10^<-10> Torr). The 3 MV electron microscope, as well as the field-ion microscope, were used to estimate the dimensions of the protrusion, which were 10 to 20 Å both in height and diameter. The microminiature electron beam with the brightness higher than 10^<11> A ・ cm^<-2> ・ rad^<-2> could be extracted from the remolded emitter.
社団法人応用物理学会の論文
1976-02-05