Articles written in Pramana – Journal of Physics
Volume 39 Issue 4 October 1992 pp 381-390
Performance of 2-hole YBCO rf SQUID in flux-locked-loop mode at 77 K
S K Arora A K Gupta Neeraj Khare Ramesh Chandra V S Tomar
A 2-hole rf SQUID has been fabricated using naturally present grain boundary Josephson weaklinks in a microbridge of bulk Y-Ba-Cu-O superconductor. Periodic oscillations in voltage-flux characteristics have been observed up to 80.5 K. The spectral density of flux noise of the SQUID is 8 × 10−4 Φ0/√Hz at 100 Hz and 77 K for open-loop mode. The SQUID has been successfully operated in flux-locked-loop mode at 77 K, demonstrating the feasiblity of the device for practical applications. In the flux-locked-loop mode the stability as well as flux noise of the SQUID has been found to improve considerably as compared to that in the open-loop mode. Various SQUID parameters have also been estimated and reported here.
Volume 65 Issue 5 November 2005 pp 959-965
Electroless Ni—P—ferrite composite coatings for microwave applications
Electroless, EL coating technique is one of the elegant ways of coating by controlling the temperature and pH of the coating bath in which there is no usage of electric current. It is estimated that the market for this chemistry will increase at a rate of about 15% per year. Use of microwave energy for synthesis of material with novel microstructures is an exciting new field in material science with enormous application.
In this investigation, nanograined BaZn2−yCoyFe16O27
As a forward step towards EL nano-composite coatings, Ni-P-
Volume 97, 2023
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