DTA curve of the sample. The exothermic peaks are located at 488, 566, and and the endothermic trough is at .
XRD patterns of the green sample (a) and the samples sintered at 500 (b), 600 (c), 650 (d), 700 (e), 750 (f), and (g).
[(a)–(c)] SEM micrographs of the samples sintered at 650, 750, and . (d). Electron diffraction pattern of a platelet.
Plots of the specific magnetic moment against temperature for different samples: green sample (a) and samples sintered at 550 (b), 600 (c), 650 (d), 700 (e), 750 (f), and (g).
Induced magnetization loops of samples sintered at 600 (a) and (b) for the measuring temperatures at 13, 18, 23, 28, 33, and (outer to inner loops).
Critical temperatures and lattice constants and of the phase in samples prepared at different sintering temperatures .
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