NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.47 [2009] >
IJPAP Vol.47(10) [October 2009] >


Title: Electrode effect on electrical conduction in thin film of polyvinyl pyrrolidone
Authors: Verma, Ashutosh
Khare, P K
Srivastava, Rudra Kant
Keywords: Polyvinyl pyrrolidone
Transient current
Steady state conduction
Dipolar orientation
Richardson Schottky conduction
Richardson Schottky conduction
Issue Date: Oct-2009
Publisher: CSIR
Abstract: Electrical conduction behaviour in ployvinyl pyrrolidone (PVP) has been investigated in both transient and steady state conditions in the temperature range 40-80°C at different dc electric fields from 05 to 100 kV/cm using similar and dissimilar, both types of electrode systems. The nature of transient currents has mainly been attributed to the dipolar nature of PVP in the lower temperature region where slope value n of the Curie Von Schweidler law is found to vary from 0.43 to 0.62 for similar electrode system and from 0.78 to 0.98 for dissimilar electrode system. The low field steady state conduction is found to be ohmic in nature. The high field non-linear nature of conduction currents is found to be strongly temperature dependent and an attempt has been made to explain these curves taking into account various conduction processes. A strong temperature dependence of the conduction current rules out tunnelling as the possible conduction mechanism. The Poole-Frankel and Richardson-Schottky coefficients estimation shows that Richardson-Schottky conduction mechanism is operative in controlling the transport of charges in PVP foil electrets. This result is, further, confirmed using different electrodes systems of Jonscher and Ansari.
Page(s): 737-744
ISSN: 0975-1041 (Online); 0019-5596 (Print)
Source:IJPAP Vol.47(10) [October 2009]

Files in This Item:

File Description SizeFormat
IJPAP 47(10) 737-744.pdf284.29 kBAdobe PDFView/Open
 Current Page Visits: 647 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 639962 since 06-Feb-2009  Last updated on 15-Dec-2014Webmaster: nopr@niscair.res.in