Direct determination of radiation damage profiles in the order-disorder alloy Pt3Co irradiated with low-energy (500-2500 eV) Ne+ ions

Jacob Aidelberg*, David N. Seidman

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

A new approach was developed, employing the field-on microscope technique, to determine directly radiation damage profiles in order-disorder alloys; the approach was applied to Pt3Co. The experiment consisted of irradiating in situ, at 30 K, Pt3Co specimens with low-energy (500-2500 eV) Ne+ ions. The specimens were subsequently dissected on an atom-by-atom basis employing the pulse field-evaporation technique. The latter procedure made it possible to determine the change in the Bragg-Williams long-range order parameter (S) as a function of distance from the irradiated surface. The measurement of δSd, where the subscript indicates damage, versus distance (x) constituted a radiation damage profile; the depth resolution of this profile was ≈2 A ̊. The mean depth of damage (xd) varied from ≈9 to 20 A ̊ and the standard deviation or straggling (δx) varied from ≈6 to 18 A ̊ as the implantation energy was increased from 500 to 2500 eV. The radiation damage profiles have also been used to determine the effective stopping power of Ne in Pt3Co.

Original languageEnglish (US)
Pages (from-to)413-417
Number of pages5
JournalNuclear Instruments and Methods
Volume170
Issue number1-3
DOIs
StatePublished - Mar 15 1980

ASJC Scopus subject areas

  • Medicine(all)

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