Abstract
This paper describes the structural and magnetic properties of the (Sr1−xCax) MnO3 (0.0≤x≤1.0) ceramics in bulk form synthesized by the chemical co-precipitation method. We observed that the increase in calcium concentration in strontium manganite changes the crystal symmetry from monoclinic to orthorhombic. The (Sr1−xCax) MnO3 (0.0≤x≤1.0) ceramic shows negative magnetization below ~42K; above this temperature it shows paramagnetic nature and below this it shows antiferromagnetic nature. Negative magnetization in this oxide seems to result from a competition between single-ion magneto crystalline anisotropy and antisymmetric Dzyaloshinsky–Moriya interactions.
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