  La$_{0.7}$Sr$_{0.3}$MnO$_3$ polycrystalline samples have been prepared using
different synthesis routes. X-ray Diffraction (XRD) confirms that the samples
are of single phase with R$\bar{3}$c space group. The surface morphology and
particle size has been measured using Field Emission Scanning Electron
Microscopy (FESEM). Magnetic measurement shows that the magnetization in the
materials are affected by low crystallite size which destroys the spin ordering
due to strain at grain boundaries and in turn also lead to reduction in
magnetization as well as an enhanced coercivity in the material.
