Oxygen content and structures of La[sub 1-x]Ca[sub x]MnO[sub 3+d] as a function of synthesis conditions

Using thermogravimetric analysis measurements, oxygen content was measured for La[sub 1[minus]x]Ca[sub x]MnO[sub 3+d] (0 [le] x [le] 0.38) samples prepared at high oxygen pressure. The oxygen content was found to decrease uniformly with increasing x for samples annealed at 12 and 140 atm O[sub 2] at...

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