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Thermal effects on the electrical properties of Potassium Nitrate: Polyvinyl Alcohol Composite Films

NEERAJ KUMAR1, NAVNEET DABRA2,3,* , JASBIR S. HUNDAL3, RABINDER NATH4

Affiliation

  1. Department of Physics, Amity School of Engineering and Technology, Amity University Rajasthan, Jaipur (Raj.)-302 001, India
  2. Mata Sahib Kaur Girls College (affiliated to Punjabi University, Patiala), Talwandi Sabo-151001, Punjab, India
  3. Materials Science Laboratory, Department of Applied Physics, Giani Zail Singh Punjab Technical University Campus, Bathinda-151001, Punjab, India
  4. Ferroelectric Materials & Devices Research Laboratory, Department of Physics, Indian Institute of Technology, Roorkee-247667, India

Abstract

This manuscript describes the experimental results of the potassium nitrate (KNO3): polyvinyl alcohol (PVA) composite thick films. To explain the nature of ferroelectric phase (phase III) of potassium nitrate (KNO3), the composite films of potassium nitrate with polyvinyl alcohol containing equal weight percentage have been prepared by solvent-cast methods. Temperature dependence characteristics of the dc electrical conductivity of these samples have been investigated. The Current versus Voltage (I-V) characteristics exhibit the polarization current at room temperature, which reveals the existence of ferroelectricity in these composite films. Current versus Temperature (I-T) measurements have been performed to identify the ferroelectric phase transition in KNO3: PVA composite films..

Keywords

PVA, KNO3, DC conductivity, (I-V) characteristics, Polymer composite films.

Citation

NEERAJ KUMAR, NAVNEET DABRA, JASBIR S. HUNDAL, RABINDER NATH, Thermal effects on the electrical properties of Potassium Nitrate: Polyvinyl Alcohol Composite Films, Optoelectronics and Advanced Materials - Rapid Communications, 8, 7-8, July-August 2014, pp.804-809 (2014).

Submitted at: March 12, 2014

Accepted at: July 10, 2014