Abstract: The dynamic magnetization switching of antiferromagnetic nickel oxide nanoparticles with a characteristic size of 8 nm has been experimentally investigated by pulsed field magnetometry. It is shown that, due to the presence of defects in NiO nanoparticles, as in other antiferromagnetic particles, the uncompensated magnetic moment is induced by the incomplete compensation of spins at the antiferromagnetic ordering. The dynamic magnetic hysteresis loops have been studied in pulsed fields with the maximum field (Hmax) of up to 130 kOe and pulse lengths (τP) of 4, 8, and 16 ms. According to the results obtained, the coercivity (HC) depends on both the τP and Hmax values. The observed increase in the HC value with decreasing pulse length (i.e., with increasing switching field frequency) is unambiguously related with the relaxation processes typical of single-domain ferromagnetic nanoparticles. However, the observed effect of the maximum applied field (Hmax) on the HC value is assumed to be a feature of antiferromagnetic nanoparticles.

Cite: Balaev D.A. , Krasikov A.A. , Dubrovskiy A.A. , Balaev A.D. , Popkov S.I. , Kirillov V.L. , Martyanov O.N.
Dynamic Magnetization Switching in NiO Nanoparticles: Pulsed Field Magnetometry Study
Journal of Superconductivity and Novel Magnetism. 2019. V.32. N2. P.405-411. DOI: 10.1007/s10948-018-4726-4 WOS Scopus РИНЦ РИНЦ AN OpenAlex

Files: Full text from publisher

Dates:

Submitted:	Mar 7, 2018
Accepted:	May 7, 2018
Published online:	May 19, 2018
Published print:	Feb 1, 2019

Identifiers:

Web of science:	WOS:000462985700036
Scopus:	2-s2.0-85047126750
Elibrary:	38614114 | 41781302
Chemical Abstracts:	2018:980258
OpenAlex:	W2803395471

Citing:

DB	Citing
Scopus	7
Elibrary	1 6
Web of science	7
OpenAlex	7

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