Atomic-scale structure and chemistry of interfaces by Z-contrast imaging and electron energy loss spectroscopy in the STEM

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The macroscopic properties of many materials are controlled by the structure and chemistry at grain boundaries. A basic understanding of the structure-property relationship requires a technique which probes both composition and chemical bonding on an atomic scale. The high-resolution Z-contrast imaging technique in the scanning transmission electron microscope (STEM) forms an incoherent image in which changes in atomic structure and composition can be interpreted intuitively. This direct image allows the electron probe to be positioned over individual atomic columns for parallel detection electron energy loss spectroscopy (EELS) at a spatial resolution approaching 0.22nm. In this paper we have combined the … continued below

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6 p.

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McGibbon, M. M.; Browning, N. D.; Chisholm, M. F.; Pennycook, S. J.; Ravikumar, V. & Dravid, V. P. December 1, 1993.

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The macroscopic properties of many materials are controlled by the structure and chemistry at grain boundaries. A basic understanding of the structure-property relationship requires a technique which probes both composition and chemical bonding on an atomic scale. The high-resolution Z-contrast imaging technique in the scanning transmission electron microscope (STEM) forms an incoherent image in which changes in atomic structure and composition can be interpreted intuitively. This direct image allows the electron probe to be positioned over individual atomic columns for parallel detection electron energy loss spectroscopy (EELS) at a spatial resolution approaching 0.22nm. In this paper we have combined the structural information available in the Z-contrast images with the bonding information obtained from the fine structure within the EELS edges to determine the grain boundary structure in a SrTiO{sub 3} bicrystal.

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OSTI as DE94006563; Paper copy available at OSTI: phone, 865-576-8401, or email, reports@adonis.osti.gov

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  • Fall meeting of the Materials Research Society (MRS),Boston, MA (United States),29 Nov - 3 Dec 1993

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  • Other: DE94006563
  • Report No.: CONF-931108--69
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 10122372
  • Archival Resource Key: ark:/67531/metadc1278902

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  • December 1, 1993

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  • Oct. 12, 2018, 6:44 a.m.

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  • Nov. 13, 2018, 8 p.m.

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McGibbon, M. M.; Browning, N. D.; Chisholm, M. F.; Pennycook, S. J.; Ravikumar, V. & Dravid, V. P. Atomic-scale structure and chemistry of interfaces by Z-contrast imaging and electron energy loss spectroscopy in the STEM, article, December 1, 1993; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc1278902/: accessed May 27, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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