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In Situ Dynamic Atomic-Level Investigation of a Weak Charge Transfer Lamellar Intercalation Process

Published online by Cambridge University Press:  15 February 2011

L. Diebolt ,
R. Sharma ,
M. Mckelvy  and
W. S. Glaunsinger
L. Diebolt
Affiliation:
Department of Chemistry and Biochemistry Arizona State University, Tempe, AZ (USA) 85287-1604.
R. Sharma
Affiliation:
Center for Solid State Science Arizona State University, Tempe, AZ (USA) 85287-1704.
M. Mckelvy
Affiliation:
Center for Solid State Science Arizona State University, Tempe, AZ (USA) 85287-1704.
W. S. Glaunsinger
Affiliation:
Department of Chemistry and Biochemistry Arizona State University, Tempe, AZ (USA) 85287-1604.
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Abstract

Environmental-cell dynamic high-resolution transmission electron microscopy (DHRTEM) has been used to provide atomic-level insight into lamellar reaction processes for the model weak- charge-transfer intercalation reaction of NH3 with 2H-TaS2. In situ intercalation was induced by exposing 2H-TaS2 crystallites to controlled pressures of NH3(g) and recorded on videotape with 0.03 second time resolution. The intercalation processes observed possess a strong similarity to nucleation and growth processes. Onset occurs in either outermost or internal guest galleries, with further intercalation of the galleries progressing away from the onset layers. Randomly staged regions, containing occasional packages of short-range order, were observed to form during the growth process.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 404: Symposium J – In Situ Electron and Tunneling Microscopy of Dynamic Processes , 1995 , 183
Copyright
Copyright © Materials Research Society 1996

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