MAGNETO-POLYMER COMPOSITES PREPARED FROM METALLOORGANIC IRON COMPLEXES

We have prepared samples of magneto-polymer composites from two metall o-organic magnetic fillers of the Fe complexes of 3-thiosemicarbasone 2,3-indolinedione (isatin) which have been immersed in defined ratio t ogether with an inorganic magnetic filler of MnZnO-Fe2O3 ferrite into poly(vinyl chloride) paste. The metallo-organic iron complexes are mag netically ordered up to about 305 degrees C. The permeability curves o f the magneto-polymer composite materials have been measured and it ha s been found that their physical parameters show a significant increas e in magnetic permeability compared with magneto-polymer composite mat erials including only MnZnO-Fe2O3 ferrite. These results are supported by Mossbauer spectroscopy measurements, and it has been found that su bstantial increase in magnetic permeability implies an increase in the s-elecuon density on Fe2+ and Fe3+ nuclei due to the interaction of t he organic magnetic filler with the inorganic one.