Paramagnetic to Superparamagnetic Transition in Ni(OH)_2 Nanoparticles

Details Paramagnetic to Superparamagnetic Transition in Ni(OH)_2 Nanoparticles Paramagnetic to Superparamagnetic Transition in Ni(OH)_2 Nanoparticles

2007-07-25

arxiv.org/abs/0707.3676v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 7 figures, a floating reference removed

Scientific paper

We report the temperature and field dependence of dc magnetization on sol-gel
prepared nanoparticles of Ni(OH)_2. At higher temperature the system is found
to behave as a paramagnet while we find evidence for superparamagnetic blocking
at low temperature. The system shows a paramagnet-superparamagnet transition
and we discuss the underlying mechanism.

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