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Author Bhattacharjee, S. ♦ Baishya, B.
Source IACS Kolkata
Content type Text
Publisher Indian J. Phys.
File Format PDF
Language English
Subject Domain (in DDC) Natural sciences & mathematics ♦ Physics
Subject Keyword ρ -T characteristics ♦ EBCO film, high vacuum technique ♦ Superconductivity
Abstract Europium oxide (Eu2O3) substituted compound has been prepared bysolid-solid reaction of the powders of Eu2O3, BaCO3 and CuO at 950°C for 16 hours.The thin films have been deposited by high vacuum evaporation technique (vacuum ˜10–6 torr). The variation of current (I ) with voltage (V ) at room temperature (RT) i.e. 294 K and in ice (273 K) are found to be linear. The variation of electricalresistivity (.) with temperature (T ) by heating the sample above RT has been determined. Resistivity is found todecrease with increase in temperature. Further the variation of electricalresistivity (.) with temperature (T) from 77 K, liquid nitrogen temperature (LNT),to 270 K has also been determined. It is observed that resistivity suddenly becomeszero at around 87 K. Thus the prepared material has superconducting properties withsuperconducting transition temperature, Tc at 87 K.
Education Level UG and PG
Learning Resource Type Article
Journal Indian J Phys
Volume Number 83
Issue Number 4
Page Count 4
Starting Page 539
Ending Page 542