Nature of empty states in superconducting CaC6and related Li-Ca ternary graphite intercalation compounds using polarized x-ray absorption near-edge structure at the CaKedge

2013 ◽  
Vol 87 (7) ◽  
Author(s):  
D. Cabaret ◽  
N. Emery ◽  
Ch. Bellin ◽  
C. Hérold ◽  
Ph. Lagrange ◽  
...  
1982 ◽  
Vol 20 ◽  
Author(s):  
H. Sfihi ◽  
L. Facchini ◽  
J. Bouat ◽  
D. Bonnin ◽  
A.P. Legrand ◽  
...  

ABSTRACT19F nuclear magnetic resonance and As X-ray absorption results on AsF5-graphite intercalation compounds are discussed in terms of species of the commonly used oxidation reaction of the graphitic planes. Three fluorine populations and two oxidation states of the arsenic are clearly present, but they cannot be easily related to the oxidation reaction of the graphite planes.


1991 ◽  
Vol 94 (1) ◽  
pp. 79-88 ◽  
Author(s):  
V. Codazzi ◽  
G. Loupias ◽  
S. Rabii ◽  
L. Elansari ◽  
D. Guérard ◽  
...  

1983 ◽  
Vol 27 ◽  
Author(s):  
L. Salamanca-Riba ◽  
B.S. Elman ◽  
M.S. Dresselhaus ◽  
T. Venkatesan

ABSTRACTRutherford backscattering spectrometry (RBS) is used to characterize the stoichiometry of graphite intercalation compounds (GIC). Specific application is made to several stages of different donor and acceptor compounds and to commensurate and incommensurate intercalants. A deviation from the theoretical stoichiometry is measured for most of the compounds using this non-destructive method. Within experimental error, the RBS results agree with those obtained from analysis of the (00ℓ) x-ray diffractograms and weight uptake measurements on the same samples.


1992 ◽  
Vol 270 ◽  
Author(s):  
M. Kraus ◽  
M. Baenitz ◽  
S. GÄrtner ◽  
H.M. Vieth ◽  
H. Werner ◽  
...  

ABSTRACTPrompted by earlier work showing that graphite intercalation compounds form superconducting ternary compounds in which thallium plays an important role C60 has been doped with Tl-alloys. Results of dc-magnetization, ac-susceptibility, X-ray analysis and NMR investigations will be presented.


1984 ◽  
Vol 39 (6) ◽  
pp. 788-790 ◽  
Author(s):  
Robert Schlögl ◽  
Hanns-Peter Boehm

AbstractIntercalation compounds of graphite with Sn(CH3)3Cl have been prepared by UV irradiation, in the presence of graphite, of solutions of Sn(CH3)3Cl, Sn(CH3)4, or of Sn(CH3)4 + SnCl4 in CCl4. Mixtures of stage 1, stage 2, and stage 3 compounds have been obtained. They were characterized by X-ray diffraction, 119Sn Mossbauer spectroscopy, and by chemical analysis. Apparently an oligomeric, anionic species is intercalated together with some solvent.


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