On the determination of loop nature in the TEM

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The two direct methods available for determining the nature of small clusters, were studied. Experiments in heavy-ion irradiated Ag and Cu, including comparisons with Black-White contrast analysis (B-W), forced us to conclude that use of the 2-1/2D technique for analysis of faulted loops is impossible because of reciprocal-lattice spike and other effects. We used B-W analysis to study the clusters produced by RT heavy-ion irradiation of Cu. In-situ irradiations were performed in Argonne HVEM-Tandem Facility using 40 and 80 keV Kr{sup +} ions. Nearly all the analysable first-layer loops were vacancy in nature. Some deeper cluster were also certainly vacancy. ... continued below

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13 p.

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Jenkins, M.L.; Fukushima, H. & Kirk, M.A. January 1, 1997.

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  • Jenkins, M.L. Oxford Univ. (United Kingdom). Dept. of Materials
  • Fukushima, H. Hiroshima Univ., Higashi-Hiroshima (Japan). Faculty of Engineering
  • Kirk, M.A. Argonne National Lab., IL (United States)

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Description

The two direct methods available for determining the nature of small clusters, were studied. Experiments in heavy-ion irradiated Ag and Cu, including comparisons with Black-White contrast analysis (B-W), forced us to conclude that use of the 2-1/2D technique for analysis of faulted loops is impossible because of reciprocal-lattice spike and other effects. We used B-W analysis to study the clusters produced by RT heavy-ion irradiation of Cu. In-situ irradiations were performed in Argonne HVEM-Tandem Facility using 40 and 80 keV Kr{sup +} ions. Nearly all the analysable first-layer loops were vacancy in nature. Some deeper cluster were also certainly vacancy. There is no unequivocal evidence for interstitial loops under these conditions. The near impossibility of establishing that interstitial loops are not present, is shown by the fact that a large fraction of loops (over 50%) could not be analyzed either because they did not display clear B-W contrast under any condition or sufficiently consistent B-W contrast under several different operating conditions.

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13 p.

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INIS; OSTI as DE97003177

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  • 1996 Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 2-6 Dec 1996

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  • Other: DE97003177
  • Report No.: ANL/MSD/CP--90536
  • Report No.: CONF-961202--86
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 461140
  • Archival Resource Key: ark:/67531/metadc675572

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  • January 1, 1997

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  • July 25, 2015, 2:21 a.m.

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  • Dec. 16, 2015, 6:37 p.m.

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Jenkins, M.L.; Fukushima, H. & Kirk, M.A. On the determination of loop nature in the TEM, article, January 1, 1997; Illinois. (digital.library.unt.edu/ark:/67531/metadc675572/: accessed May 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.