This article is cited in 9 papers

The effect of low-temperature heat treatment on the magnetic properties of biogenic ferrihydrite nanoparticles

D. A. Balaev^ab, A. A. Krasikov^b, A. A. Doubrovskii^a, O. A. Bayukov^a, S. V. Stolyar^ab, R. S. Iskhakov^a, V. P. Ladygina^c, R. N. Yaroslavtsev<sup>b

a</sup> L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk
^b Siberian Federal University, Krasnoyarsk
^c Krasnoyarsk Scientific Center of SB RAS

Abstract: We have studied the influence of low-temperature heat treatment (annealing) on the magnetic properties of superparamagnetic nanoparticles of biogenic ferrihydrite. It is established that the proposed treatment leads to an increase in the blocking temperature and magnetic susceptibility of samples. After subsequent exposure in aqueous medium, the magnetic properties of annealed sol remain constant. The character of changes in the magnetic properties of samples studied shows that low-temperature heat treatment allows nanoparticle dimensions to be increased in a controlled way.

Received: 13.02.2015

 English version: Technical Physics Letters, 2015, 41:7, 705–709

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