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Staging Transitions In Li-Graphite : Phonon Spectra Of Dilute Stage 1

Published online by Cambridge University Press:  15 February 2011

K.C. Woo ,
H. Mertwoy ,
J.E. Fischer ,
W.A. Kamitakahara  and
D.S. Robinson
K.C. Woo
Affiliation:
Moore School EE and LRSM, University of Pennsylvania Philadelphia, PA, USA
H. Mertwoy
Affiliation:
Moore School EE and LRSM, University of Pennsylvania Philadelphia, PA, USA
J.E. Fischer
Affiliation:
Moore School EE and LRSM, University of Pennsylvania Philadelphia, PA, USA
W.A. Kamitakahara
Affiliation:
Ames Lab and Physics Dept., Iowa State University, Ames, IA, USA
D.S. Robinson
Affiliation:
Physics Dept. and Materials Research Lab, University of Illinois, Urbana, IL, USA
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Abstract

First-order transitions to dilute stage one from stages 2,3 and 4 and from mixed stage 1+2 are observed in Li-graphite as predicted by Safran. The upper phase boundary is asymmetric in concentration and is sharply peaked about x ∼ 0.4. The phonons in the dilute stage 1 have energies between those of LiC6 and graphite. Unlike the stage 2 compounds, the compressibility does not scale in a simple way with intercalant density.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 20: Symposium H – Intercalated Graphite , 1982 , 265
Copyright
Copyright © Materials Research Society 1983

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References

REFERENCES

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