Doping of polyvinylidene difluoride with cobalt nitrate: Structural, electrical, and magnetic properties

Authors

Katie Fontaine, University of Rhode Island
Wendy Lopez, University of Rhode Island
Everett Crisman, Hanscom AFB
John Derov, Hanscom AFB
William B. Euler, University of Rhode Island

Document Type

Article

Date of Original Version

10-1-2012

Abstract

Polyvinylidene difluoride (PVDF) doped with a few percentage of cobalt nitrate hexahydrate induces transition into the ferroelectric β-phase. Infrared spectra show peaks indicative of β-phase PVDF at 1277 cm -1 and loss of the α-phase peak at 790 cm -1 while polarization measurements show loops consistent with relaxor ferroelectric behavior. Electronic spectroscopy shows that the Co 2+ ion is in a six-coordinate environment, and this is confirmed by magnetic susceptibility. Thermal measurements show that the PVDF melts near 155 °C, depending on the Co 2+ content, and that there are several other thermal features that are associated with the hydrated cobalt nitrate. © 2012 Wiley Periodicals, Inc.

Publication Title, e.g., Journal

Journal of Polymer Science, Part A: Polymer Chemistry

Volume

50

Issue

19

Citation/Publisher Attribution

Fontaine, Katie, Wendy Lopez, Everett Crisman, John Derov, and William B. Euler. "Doping of polyvinylidene difluoride with cobalt nitrate: Structural, electrical, and magnetic properties." Journal of Polymer Science, Part A: Polymer Chemistry 50, 19 (2012): 3970-3975. doi: 10.1002/pola.26191.