Temperature dependence of antiferromagnetic susceptibility in ferritin

Departamento de F´isica and CICECO, Universidade de Aveiro, 3810-193 Aveiro, Portugal(Dated: February 6, 2009)We show that antiferromagnetic susceptibility in ferritin increases with temperature between 4.2K and 180 K (i. e. below the N´eel temperature) when taken as the derivative of the magnetization athigh fields (30×10

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