Resistivity study of RuSr2GdCu2O8 superconductor

• Published in: Physica status solidi. A, Applications and materials science Vol. 207; no. 2; pp. 411 - 416
• Main Authors: Mohan, Rajneesh, Singh, Kiran, Kaur, Nupinderjeet, Kumar, Naresh, Bhattacharya, Shovit, Gaur, Neeraj K., Gupta, Shiv K., Singh, Ram K.
• Format: Journal Article
• Language: English
• Published: Berlin WILEY-VCH Verlag 01.02.2010; WILEY‐VCH Verlag; Wiley-VCH
• Subjects: 74.25.Fy; 74.62.Bf; 74.62.Dh; 74.72.Jt; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Effects of material synthesis, crystal structure, and chemical composition; Exact sciences and technology; Physics; Superconductivity; Transition temperature variations; Scanning electron microscopy; Annealing; Electrical conductivity; Superconducting transitions; Solid state reaction; High-Tc superconductors; Superconductivity; Controlled atmospheres; XRD; Heat treatments; Copper Gadolinium Ruthenium Strontium Oxides Mixed
• ISSN: 1862-6300; 1862-6319
• DOI: 10.1002/pssa.200925465

The superconducting properties of RuSr2GdCu2O8 (Ru‐1212) superconductor strongly depend on the processing conditions. In this report we have made an investigation on the influence of processing method and heat treatments on the superconducting properties, as well as normal state resistivity of RuSr2GdCu2O8 (Ru‐1212) compound. The samples were prepared using solid‐state reaction of high purity oxides and carbonates of constituents cations through direct method, precursor method, and standard method used for the synthesis of Ru‐1212 compounds. These samples were then subjected to different annealing treatments in different atmosphere (oxygen and air) for 120 h. They have been investigated by X‐ray diffraction, dc resistivity and scanning electron microscopy. The normal state resistivity has been studied on the basis of various conduction mechanisms.