Sökning: "Stephen Berger"

Hittade 1 avhandling innehållade orden Stephen Berger.

  1. 1. Preparation, structure and properties of Hg, Tl-containing high-temperature superconductors

    Författare :Martin Valldor; Stephen Berger; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; oorganisk kemi; Inorganic Chemistry;

    Sammanfattning : Powder samples with the general composition (Tl,Hg)2(Ba,Sr)2(Sr,Ca)Cu2O8-d, abbreviated 2212, were synthesised by solid-state reaction of metal oxides in closed silica ampoules. Depending on the relative amounts of Ba, Sr, and Ca, the superconducting transition temperature, Tc, varied significantly (45-100 K). LÄS MER