NMR study in sodium-hydrogen-C{sub 60} superconductor

Conference · Thu Dec 31 00:00:00 EST 1998

OSTI ID:308132

Ogata, H; Miyajima, S; Imaeda, K; Inokuchi, H ^[1]

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1. Inst. for Molecular Science, Myodaiji, Okazaki (Japan)

{sup 23}Na and {sup 1}H NMR studies have been carried out for a Na{sub x}H{sub y}C{sub 60} superconductor. The peak position of the {sup 23}Na NMR spectrum exhibits discontinuous upfield shift of 30 ppm at about 250 K, indicates a first order phase transition. From the line shape of the {sup 23}Na spectrum obtained at 7 K, the quadrupole coupling constant tensor is evaluated to be {vert_bar}e{sup 2}Qq/h{vert_bar} = 3.7 MHz with the asymmetry parameter {eta} = 0.95. The {sup 1}H NMR spectrum suggests an anionic hydrogen state with weakly delocalized nature.

• OSTI ID: 308132
• Report Number(s): CONF-980405-; TRN: IM9907%%58
• Resource Relation: Conference: Spring meeting of the Materials Research Society, San Francisco, CA (United States), 13-17 Apr 1998; Other Information: PBD: 1998; Related Information: Is Part Of Hydrogen in semiconductors and metals; Nickel, N.H. [ed.] [Hahn-Meitner-Inst., Berlin (Germany)]; Jackson, W.B. [ed.] [Xerox Palo Alto Research Center, CA (United States)]; Bowman, R.C. [ed.] [Jet Propulsion Lab., Pasadena, CA (United States)]; Leisure, R.G. [ed.] [Colorado State Univ., Fort Collins, CO (United States)]; PB: 469 p.; Materials Research Society symposium proceedings, Volume 513
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
NMR SPECTRA
ORGANIC SUPERCONDUCTORS
FULLERENES
SODIUM COMPOUNDS
HYDROGEN COMPOUNDS
CLATHRATES
ELECTRONIC STRUCTURE
CRYSTAL STRUCTURE
TEMPERATURE DEPENDENCE
SPIN-LATTICE RELAXATION