Electron transport, penetration depth and upper critical magnetic field of ZrB12 and MgB2

V. A. Gasparov, N. S. Sidorov, I. I. Zver'kova +2

We report on the synthesis and measurements of the temperature dependence of resistivity, R(T), the penetration depth, l(T), and upper critical magnetic field, Hc2(T), for polycrys…