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Radhikesh Raveendran, N.; Amaladass, E.P.; Geetha Kumary, T.; Janaki, J.; Mani, Awadhesh, E-mail: mani@igcar.gov.in
Proceedings of the seventeenth international conference on thin films: abstracts2017
Proceedings of the seventeenth international conference on thin films: abstracts2017
AbstractAbstract
[en] The synthesis of Nd2-xCexCuO4 thin films (x=0.1,0.15) have been carried out using pulsed laser deposition and their superconducting and normal state properties are investigated in the range 4-300 K. The influence of Ce doping, and annealing effects have been studied. Characterization by X-ray Diffraction, SEM and EDS indicates that the films are phase pure with uniform micro-structure and compositionally homogeneous. The Nd2-xCexCuO4 thin film (x=0.15) exhibits a metal to semiconductor transition followed by a sharp increase in resistivity with decreasing temperature below 13 K presumably due to the long range magnetic ordering to the anti-ferromagnetic (AFM) state. It exhibits positive MR and linear in-plane MR at low fields. The Nd2-xCexCuO4 thin film (x=0.1) exhibits a sharp superconducting transition upon annealing with a systematic evolution of superconductivity with annealing temperature and time. It exhibits a large anisotropy in the critical field (HC2) which is much larger in-plane than out of- plane. Our experimental results lead to the fact that magnetic ordering and superconductivity are both exhibited by this system; they are mutually exclusive and the coupled effect of both Ce doping and controlled atmosphere annealing influence the superconducting, magnetic and normal state behavior. (author)
Source
CSIR-National Physical Laboratory, New Delhi (India); Indian Vacuum Society, Mumbai (India); 236 p; 2017; p. 134; ICTF-2017: 17. international conference on thin films; New Delhi (India); 13-17 Nov 2017
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Conference
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