ZIB

Hits per page

hits 1 - 2 | 2 hits

Sorting

Electronic Resource

Investigation of ytterbium fulleride compounds (2000)

Cao, X.-W. ; Hao, J.-M. ; Wu, X.-S. ; [et al.]

Springer

Applied physics 70 (2000), S. 223-225

add to mindlist on the mindlist

Details

ISSN: 1432-0630

Keywords: PACS: 61.10.Nz; 68.65; 71.20.T; 81.05.Tp

Source: Springer Online Journal Archives 1860-2000

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics

Notes: Abstract. We have synthesized the ytterbium fulleride compounds YbxC60 (x=1–6) at a range of lower temperature (530 °C–570 °C). Except for the nominal composition Yb3C60 compound, which has been reported in the references, we also obtained a new phase Yb6C60, whose structure is orthorhombic with space group P21212 and unit cell parameters a=21.28 Å, b=20.13 Å and c=15.89 Å. The YbxC60 compounds are sensitive to oxygen, the samples exposed in air convert to an amorphous phase and Yb2O3 compound.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/s003390050037

Permalink

Library	Location	Call Number	Volume/Issue/Year	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

New high Tc superconductor: (In,Pb,Cu)Sr2(Ca,Y)Cu2O7−δ (1991)

Liu, R. S. ; Hu, S. F. ; Edwards, P. P.

Woodbury, NY : American Institute of Physics (AIP)

Applied Physics Letters 59 (1991), S. 985-987

add to mindlist on the mindlist

Details

ISSN: 1077-3118

Source: AIP Digital Archive

Topics: Physics

Notes: Bulk superconductivity was observed in the new system (InxPb0.75−xCu0.25)Sr2(Ca0.5Y0.5)Cu2 O7−δ. An increase in indium doping, 0≤x≤0.2, into the Pb sites results in an increase in the superconducting transition temperature Tc from 45 K for x=0 to 60 K for x=0.2. For nominal compositions x(approximately-greater-than)0.2, a decrease in Tc was observed, and an increase in the concentration of an impurity phase. From the results of the x-ray diffraction and energy- dispersive spectrometry, we identify the phase responsible for the superconductivity to be [In0.06(1)Pb0.69(1)Cu0.25]Sr1.99(7)[Ca0.47(1)Y 0.53(2)]Cu2O7−δ; this phase resulted from the synthesis of a sample of nominal composition (In0.2Pb0.55Cu0.25)Sr2(Ca0.5Y0.5)Cu2 O7−δ.