A°} and interplanar spacing d(104) 2.75 -2.76A° and d(311) 2.56 A°, respectively, showed changes in lattices of the samples. Similarly, the asymmetric FTIR peaks (Fig. ) for FeCT, FeMC, and FePM around 600-400 cm -1 indicate the varying degrees of the axial ratios (a/b≠1) of nanooscillators, suggesting the morphological differences in iron oxide nanoparticles under varying ligand field. Also, the surface analysis of the samples (Fig. ) shows that along with surface hydroxyl (Fe-O-H) group (~3500 cm -1 broad) due to moisture, the traces of carbonyl and carboxylic functionalities (1600-1400 cm -1 symmetric and asymmetric stretching modes of -C=O) attached to hydrocarbon residues (1400-1200 cm -1 bending modes of -C-H) from ligands are present on the surface of nanoparticles. The previously reported studies have demonstrated similar results but with chemically pure surfactants and different methods. Also, the FESEM images (Fig. )) indicate similar variations in the morphology of these micro aggregates of the samples. The high-resolution TEM images (Fig. ) indicate the change of morphology from more regular shapes (axial ratios a/b ~1)