Structural and magnetic studies of Ti4+ substituted M-type BaFe12O19 hexa-nanoferrites

M-type hexagonal BaTixFe12-(4/3)xO19 nanoparticles, 0 <= x <= 1, were prepared by the chemical co-precipitation method. XRD, TEM, FT-IR, TGA, DTA and VSM techniques were used to characterize the samples. This study proved the formation of single-phase M-type hexagonal nanoferrites. The average particle and crystallite (R) sizes, lattice parameter c, experimental and theoretical densities, strain (epsilon), saturation magnetization (M-s), magnetic moment showed decrease against x, whereas the lattice constant a, porosity (P) and specific surface area showed increase. The force constants and trend of band positions and Debye temperature were x dependent, whereas the coercivity, remanent magnetization, squareness and anisotropy constant did not. The net weight loss of the samples led in the range of 0.00418-0.01834% weight where the maximum weight loss occurred before heating at 500 degrees C. P and R showed strong effect on M-s and e. (C) 2015 Elsevier Ltd. All rights reserved.