Among the superconducting graphite intercalation compounds, CaC 6 exhibits the highest
critical temperature T c= 11.5 K. Bulk samples of CaC 6 are obtained by immersing highly …

We report the measurements of the temperature dependence of the resistivity, ρ (T),
magnetic penetration depth, λ (T), the lower, H c 1 (T), and upper, H c 2 (T), critical magnetic …

The magnetic penetration depth λ (T) in the basal plane of a magnesium diboride (MgB 2)
film was measured using a two-coil mutual-inductance technique at 50 kHz. This film has T …

The temperature dependence of the in-plane magnetic penetration depth, λ ab (T), has been
measured in ac-axis oriented polycrystalline CaC 6 bulk sample using a high-resolution …

We have measured the temperature dependence of the microwave surface impedance Z s=
R s+ i ω μ 0 λ of two c-axis oriented MgB 2 films employing dielectric resonator techniques …

Electronic specific heat C as a function of temperature T was calculated for a mesoscopically
disordered s-wave superconductor treated as a spatial ensemble of domains with …

The microwave surface impedance Z/sub s/= R/sub s/+ j/spl omega//spl mu//sub 0//spl
lambda/of MgB/sub 2/thin films was measured via advanced dielectric resonator (DR) …

In this paper we present the results of measurements of the microwave surface impedance
of a powder sample and two films of MgB 2. The powder sample has a T c= 39 K and the …

We report on the synthesis and measurements of the temperature dependences of the
resistivity ρ, the penetration depth λ, and the upper critical magnetic field H c 2, for …

We present a systematic characterization of Mg 1− x Li x B 2 polycrystalline samples with
nominal Li content x up to 0.30. We explore the effectiveness of the substitution and …