STUDY OF THE COMPLEX OF THE SCHIFF-BASE POLYMER WITH SULFATE IRON BY MAGNETIC FORCE MICROSCOPY

The micromagnetic distribution of the clusters of the PPH-FeSO4 comple x (Schiff-base polymer with sulfate iron) was investigated by magnetic force microscopy (MFM). MFM results exhibited that magnetites (Fe3O4) were irregularly included in PPH-FeSO, complexes. Some nanocrystallin e Fe3O4 magnetites aggregated and formed magnetic clusters of 50-140 n m length. The ferromagnetic properties of the PPH-FeSO4 complex were a ssociated with the existence of Fe3O4 magnetites. Moreover, the influe nce of the distance between tip and sample surface on the MFM images w as also discussed. The observation suggested that MFM was a very usefu l tool for studying the micromagnetic structure of organic ferromagnet s. (C) 1997 American Vacuum Society.. [S0734-211X(97)13104-3].