Doping of polyvinylidene difluoride with cobalt nitrate: Structural, electrical, and magnetic properties
Date of Original Version
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.
Journal of Polymer Science, Part A: Polymer Chemistry
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.