Superconductors.ORG reports signs of superconductivity near 267K magnetic (-6C, 21F). This suggests a resistive Tc (temperature critical) around 264-265 Kelvin, which would be another world record for a 9223 copper-oxide structure
Sharif University (Iran) published some confirmation of Joe Ecks work with Ultra-YCBO in several peer reviewed physics journals (Physica C, European Physical Journal B)
After the recent discovery (also by Joe Eck) of superconductivity near 258 Kelvin, an effort was made to identify a small anomaly a few degrees above 260K in the magnetization plots of (Tl4Ba)-9223-Mg2. A stoichiometric mix with one less Mg and one more Cu atom was produced using the "layer cake" method. The resulting formulation (Tl4Ba)Ba2MgCu8O13+ produced diamagnetic transitions near 267K in five separate magnetization tests.
Sharif University (Iran) published some confirmation of Joe Ecks work with Ultra-YCBO in several peer reviewed physics journals (Physica C, European Physical Journal B)
After the recent discovery (also by Joe Eck) of superconductivity near 258 Kelvin, an effort was made to identify a small anomaly a few degrees above 260K in the magnetization plots of (Tl4Ba)-9223-Mg2. A stoichiometric mix with one less Mg and one more Cu atom was produced using the "layer cake" method. The resulting formulation (Tl4Ba)Ba2MgCu8O13+ produced diamagnetic transitions near 267K in five separate magnetization tests.
If this is verified by other sources, then it's a huge breakthrough in high temperature superconductivity. Although the metallurgy is exquisitely complex, the copper-oxide compound approach does not require the development of new and untested exotic materials, like graphene, for example. To read the rest of the article, click here.