Accession Number : ADA303688

Title :   Growth and Study of Superconducting C60 Compounds.

Descriptive Note : Final rept. Oct 92-Sep 95,

Corporate Author : CALIFORNIA UNIV DAVIS

Personal Author(s) : Liu, J. Z. ; Shelton, R. N. ; Klavins, P. ; Irons, S. H. ; Chang, I-C

PDF Url : ADA303688

Report Date : DEC 1995

Pagination or Media Count : 10

Abstract : A home made semi-automatic feeding plasma arc reactor was used for the mass production fullerenes. Large, high quality single crystals of C60 up to 3mm in length have been grown by both the open-end and sealed vapor transport techniques. Millimeter-sized superconducting single crystals of K3C60 were successfully produced by a sophisticated vacuum doping method. Magnetic and superconducting properties were obtained. Information on the field and temperature dependences of the critical current density J(sub c) and the H(c1) have been reported. New compounds of Yb(x) C60 with x=1-6 were synthesized using a liquid ammonia route at low T and in an inert atmosphere. It turns out that these compounds are amorphous and have a spin glass behavior at a temperature T<15K. Finally, new superconductors with T(sub c) of 134K were found in the system of Tl(1-x)HgBa2Ca2Cu3O(8+y). jg p1

Descriptors :   *FULLERENES, *CARBON, *SUPERCONDUCTIVITY, CALCIUM, MAGNETIC PROPERTIES, PRODUCTION, VAPORS, MASS, VACUUM, CURRENT DENSITY, SINGLE CRYSTALS, GLASS, OXIDES, COPPER, TRANSPORT, ORGANIC COMPOUNDS, MERCURY, DOPING, HIGH TEMPERATURE SUPERCONDUCTORS, PLASMA DEVICES, BARIUM, ATMOSPHERES, POTASSIUM, SEALED SYSTEMS, THALLIUM, REACTOR OPERATION, RARE GASES.

Subject Categories : Inorganic Chemistry
      Physical Chemistry
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE