Naslov
Enhanced MgB(2) superconductivity under high pressure

Autori
Liu, Z.X. ; Jin, C.Q. ; You, Jiangyang ; Li, S.C. ; Zhu, J.L. ; Yu, R.C. ; Li, F.Y. ; Su, S.K.

Izvornik
Chinese physics letters (0256-307X) 19 (2002), 1; 120-121

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, kratko priopcenje, znanstveni

Ključne riječi
Transition temperature variations; phase diagrams; Effects of pressure; Pressure treatment

Sažetak
We report on in situ high-pressure studies up to 1.0 GPa on the MgB2 superconductor which was high- pressure synthesized. The as-prepared sample is of high quality in terms of sharp superconducting transition (Tc) at 39 K from the magnetic measurements. The in situ high-pressure measurements were carried out using a Be-Cu piston-cylinder-type instrument with mixed oil as the pressure transmitting medium which warrants a quasi-hydrostatic pressure environment at low temperature. The superconducting transitions were measured using the electrical conductance method. It is found that Tc increases by more than 1 K with pressure in the low-pressure range, before the Tc value decreases with the further increase of the pressure.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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