Bloch law for low temperature dependence magnetization behavior of Ni nanotubes has been investigated. The magnetization behavior of the nanotubes is compared with nanowires and the Ni-bulk. Bloch law holds good for Ni nanowires and bulk at all temperatures from 300 K to 5 K, whereas it is valid for Ni nanotubes up to 60 K.
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The authors are thankful to Higher Education Commission (HEC) of Pakistan to provide financial support for this research project.
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