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Electrical and magnetic properties of Nd3+-substituted GdBaSrCu3O7 superconductor

✍ Scribed by A. Manigandan; V. Anbarasu; K. Sivakumar

Publisher
Elsevier Science
Year
2011
Tongue
English
Weight
718 KB
Volume
471
Category
Article
ISSN
0921-4534

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✦ Synopsis

The compounds GdBaSr 1Γ€x Nd x Cu 3 O y (where x = 0, 0.1, 0.2 and 0.3) were prepared using the solid-state reaction technique. The single phase and microrange crystalline nature of the compounds were studied by powder X-ray diffraction and SEM analysis. The electrical resistivity and magnetic properties of the compounds were studied as a function of temperature. A decrease in superconducting transition temperature for an increase in Nd substitution was observed. A decreasing trend of diamagnetic strength and an increasing trend of magnetic moment of the samples with Nd substitution were observed from magnetization measurement. The optimal sintering temperature of the compounds was found to be 950 Β°C.

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Temperature and magnetic field dependences of the thermal conductivity of a GdBa2Cu307-0 high-To superconductor have been measured between 1.5}( and 7.OK. It has been found that the thermal conductivity increases around 2.2K, at which the magnetic orderin~ peak is observed in the specific heat meas