Electron energy dependence of amorphization in Zr3Fe

Arthur Thompson Motta, L. M. Howe, P. R. Okamoto

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

This paper reports the results from a study conducted to determine the effect of electron energy on the dose-to-amorphization of Zr3Fe at 23-30 K. Zr3Fe samples were irradiated in the HVEM at Argonne National Laboratory, at energies ranging from 200 to 900 keV. Amorphization occurred at electron energies from 900 keV down to 250 keV. Three distinct regions were observed: between 900 and 700 keV amorphization occurred at a constant low dose of approx. 4 × 1021 e cm-2; a higher plateau at 1022 was observed between 600 and 400 keV, and finally there was a sharp increase in the dose-to-amorphization below 400 keV, so that at 250 keV the necessary dose was an order of magnitude higher than that at 900 keV. In the region below 400 keV there was evidence of a dependence of the dose-to-amorphization on the orientation of the sample with respect to the electron beam. The results can be analyzed in terms of a composite displacement cross section dominated at high energies by displacements of Zr and Fe atoms, by displacements of Fe atoms at intermediate energies and of secondary displacements of lattice atoms by recoil impurities at low energies.

Original languageEnglish (US)
Title of host publicationMaterials Synthesis and Processing Using Ion Beams
EditorsAnthony F. Garito, Alex K-Y. Jen, Charles Y-C. Lee, Larry R. Dalton
PublisherPubl by Materials Research Society
Pages265-270
Number of pages6
Volume316
ISBN (Print)1558992154
Publication statusPublished - 1994
EventProceedings of the MRS 1993 Fall Meeting - Boston, MA, USA
Duration: Nov 29 1993Dec 3 1993

Other

OtherProceedings of the MRS 1993 Fall Meeting
CityBoston, MA, USA
Period11/29/9312/3/93

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All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cite this

Motta, A. T., Howe, L. M., & Okamoto, P. R. (1994). Electron energy dependence of amorphization in Zr3Fe. In A. F. Garito, A. K-Y. Jen, C. Y-C. Lee, & L. R. Dalton (Eds.), Materials Synthesis and Processing Using Ion Beams (Vol. 316, pp. 265-270). Publ by Materials Research Society.