@inproceedings{f065662b124b4602b8774f6491ee0357,
title = "Peak effect at microwave frequencies in swift heavy on irradiated YBa2Cu3O7-δ thin films - Investigation of vortex dynamics",
abstract = "The vortex dynamics at microwave frequencies in YBa2Cu3O7-δ (YBCO) films has been studied. We observe a peak in the microwave surface resistance Rs vs. T (temperature) plots at 4.88 GHz in some films in magnetic fields (upto 0.8 T) whereas a few films do not show a pronounced peak in their surface resistance. This is associated with the 'peak-effect' phenomenon and reflects the order-disorder transformation of the flux-line lattice near the transition temperature. Introduction of artificial pinning centers like columnar defects as a result of irradiation with 200 MeV Ag ion leads to the suppression of the peak in films exhibiting the 'peak-effect'. Interestingly, a peak is seen to develop in those films that initially did not show a peak in the surface resistance before irradiation. These results and the dynamics of the vortices at microwave frequencies for the unirradiated and irradiated films will be discussed.",
author = "Tamalika Banerjee and Bhangale, {A. R.} and P. Raychaudhuri and D. Kanjilal and R. Pinto",
year = "2002",
language = "English",
series = "Materials Research Society Symposium - Proceedings",
publisher = "Springer",
pages = "363--368",
booktitle = "Materials for High-Temperature Superconductor Technologies",
note = "Materials for High-Temperature Superconductor Technologies ; Conference date: 26-11-2001 Through 29-11-2001",
}