THERMOPOLYCHROMISM AND ELECTROTHERMAL PROPERTIES OF FERRIC ACETYLACETONATE AND ITS RESONATING STRUCTURES

Ferric acetylacetonate Fe(ac. ac)(3) was prepared by the reaction of f erric chloride with acetylacetone in ethanolic solution. Vergin and va rious samples preheated at 170, 220 and 330 degrees C were carefully o btained. X-ray diffraction, IR absorption spectra, scanning electron m icroscopy and differential thermal analysis (DTA) were done for all sa mples. The temperature dependence of the electrical and dielectric pro perties of selective batches of Fe(ac. ac) phases and intermediates we re evaluated. The results obtained are discussed on the basis of induc ed lattice imperfections which may lead to phase change and change in the degree of crystallinity, polythermochromism is established herein for the first time.