Structural, electrical and magnetic properties of Nd - A - CoO (A = Sr, Ca) Perovskite Powders by Mechanical Alloying.

In this work, NdCoO (NCO), NdSrCoO (NSCO) and NdCaCoO (NCCO) perovskite cobaltites were synthesised by mechanical alloying method. Structural evolutions, magnetic and electrical properties of these perovskite were systematically examined through X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray detection (SEM-EDX), transmission electron microscopy (TEM), differential scanning calorimetry (DSC), vibration sample magnetometer (VSM) and impedance analyser (IA). The XRD and SEM results revealed that the microstructure of the perovskite materials changed during mechanical alloying.