Effects of Annealing Conditions on the Microstructure and Magnetic   Properties of the Perovskite Manganite, La0.75Sr0.25MnO3
  The effects of annealing conditions upon the microstructure and the magnetic properties of the colossal magnetoresistive manganite La0.75Sr0.25MnO3 have been investigated. Increasing the annealing temperature and time of annealing is seen to increase the size of crystallites within the samples. The spontaneous magnetic moment per formula unit and the Curie temperature, as obtained from Arrott plot analysis, are observed to depend upon the average size of crystallites. 
D.O.J.Green and K-U. Neumann
cond-mat.mtrl-sci