Pulsed Field-Induced Magnetization Switching in Antiferromagnetic Ferrihydrite Nanoparticles

被引：0
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作者：
D. A. Balaev
A. A. Krasikov
D. A. Velikanov
S. I. Popkov
N. V. Dubynin
S. V. Stolyar
V. P. Ladygina
R. N. Yaroslavtsev
机构：
[1] Russian Academy of Sciences,Kirensky Institute of Physics, Krasnoyarsk Scientific Center, Siberian Branch
[2] Siberian Federal University,Krasnoyarsk Scientific Center, Siberian Branch
[3] Moscow State University of Civil Engineering,undefined
[4] Russian Academy of Sciences,undefined
来源：
Physics of the Solid State | 2018年 / 60卷
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摘要：
The dynamic magnetization switching of ferrihydrite nanoparticles has been investigated by a pulsed magnetometer technique in maximum fields Hmax of up to 130 kOe with pulse lengths of 4, 8, and 16 ms. Ferrihydrite exhibits antiferromagnetic ordering and defects cause the uncompensated magnetic moment in nanoparticles; therefore, the behavior typical of magnetic nanoparticles is observed. The dynamic hysteresis loops measured under the above-mentioned conditions show that the use of pulsed fields significantly broadens the temperature region of existence of the magnetic hysteresis and the coercivity can be governed by varying the maximum field and pulse length. This behavior is resulted from the relaxation effects typical of conventional ferro- and ferrimagnetic nanoparticles and the features typical of antiferromagnetic nanoparticles.
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页码：1973 / 1978
页数：5
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