In the past few years' investigation in the magnetic properties with different aspect in nano structure have been increased rapidly because of their technological importance, lots of attractive properties like, high surface-volume ratio, electronic, optical and magnetic properties as well as for understanding the physics involved in their many unusual properties comparing with the bulk [1] [2] [3] [4] [5] . Since, the discovery of the high temperature superconductor in copper oxide peroviskit

more »

... d its unique electric and magnetic properties, Copper oxide (CuO) got more attention and made more interesting candidate for research [6] [7] [8] . Our recent ab-intio investigation on magnetism in zigzag and armchair CuO nanotubes shows remarkable magnetic properties at different diameter [9] . So, it is wrathful to investigate the temperature and size dependent magnetic properties in zigzag CuO nano tubes as a function of temperature.