S K Arora
Articles written in Pramana – Journal of Physics
Volume 10 Issue 5 May 1978 pp 511-517 Atomic And Molecular Physics
Volume 16 Issue 6 June 1981 pp 467-472 Atomic And Molecular Physics
Volume 24 Issue 3 March 1985 pp 521-525 Solid State Physics
The photorefractive effect has been studied experimentally in single crystals of Fe and Mn-doped lithium niobate as a function of external static magnetic field. A strong dependence of changes in birefringence is observed on the magnitude and direction of the external field.
Volume 35 Issue 4 October 1990 pp 1- Rapid Communications
RF SQUID behaviour due to grain boundary weak links in a bulk YBCO is observed at 77 K using modified commercial rf electronics. Porous samples with low
Volume 36 Issue 2 February 1991 pp 243-243 Erratum
Volume 39 Issue 4 October 1992 pp 381-390
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 94, 2020
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