Please use this identifier to cite or link to this item:
|Type:||Artigo de periódico|
|Title:||Complex magnetic internal order in structurally disordered Ni nanoparticles|
|Author:||De Biasi, E|
Santos Duque, JG
|Abstract:||A detailed study of the magnetic properties of colloidal Ni nanoparticles (similar to 5.2 nm) that do not present long range order is presented. Two magnetic contributions were observed at high temperatures (> 25 K), a dominating paramagnetic one and a ferromagnetic contribution, detected by ferromagnetic resonance and low field magnetic measurements. Interestingly, the ferromagnetic behavior does not follow a classical superparamagnetic description. The effective anisotropy increases at low temperatures due to interactions among the ferromagnetic clusters, which leads the system to a frustrated state.|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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