Atomic-scale structure and chemistry of interfaces by Z-contrast imaging and electron energy loss spectroscopy in the STEM
- Oak Ridge National Lab., TN (United States)
- Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering
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.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 10122372
- Report Number(s):
- CONF-931108-69; ON: DE94006563
- Resource Relation:
- Conference: Fall meeting of the Materials Research Society (MRS),Boston, MA (United States),29 Nov - 3 Dec 1993; Other Information: PBD: Dec 1993
- Country of Publication:
- United States
- Language:
- English
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Atomic scale structure and chemistry of interfaces by Z-contrast imaging and electron energy loss spectroscopy in the STEM
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
STRONTIUM TITANATES
GRAIN BOUNDARIES
SCANNING ELECTRON MICROSCOPY
ENERGY-LOSS SPECTROSCOPY
TRANSMISSION ELECTRON MICROSCOPY
MICROANALYSIS
IMAGES
BICRYSTALS
INTERFACES
400101
360202
ACTIVATION, NUCLEAR REACTION, RADIOMETRIC, AND RADIOCHEMICAL PROCEDURES
STRUCTURE AND PHASE STUDIES