Ferromagnetism in Mn doped copper oxide nanoflake like structures with high Neel temperature

Abstract

Copper oxide is an excellent oxide based semiconductor with a wide bandgap and also a promising candidate for dilute magnetic semiconductor (DMS) when doped with some transition elements. We report 0.5% of manganese doped copper oxide based DMS with glycine as surfactant and surface assisting agent using a simple chemical route. The synthesized DMS material forms a nanoflake like structures and exhibit magnetic hysteresis at room temperature. At low temperature, the material exhibit weak hysteresis and exhibit antiferromagnetic ordering. This was explained on the basis of hopping mechanism. Low temperature magnetic study reveals Neel temperature of about 99K, which is high for previously reported and can be a promising candidate for spintronic devices.