Email this article Anomaly in the Temperature Dependence of the Coercive Force of an Ensemble of Ferromagnetic CrO2 Nanoparticles under Conditions of Percolation Conductivity
- Authors: Dalakova N.V.1, Beliayev E.Y.1, Horielyi V.A.1, Osmolowskaya O.M.2, Osmolowsky M.G.2
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Affiliations:
- Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine
- St. Petersburg State University
- Issue: Vol 83, No 6 (2019)
- Pages: 778-780
- Section: Article
- URL: https://journals.rcsi.science/1062-8738/article/view/187431
- DOI: https://doi.org/10.3103/S106287381906011X
- ID: 187431
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Abstract
The temperature dependence of coercive force Hc(T) of pressed powders of ferromagnetic half metal CrO2 is compared to the temperature dependence of the maximum field of positive tunneling magnetoresistance Hp(T). It is established that the multidomain alters the nature of the reverse magnetization of transport channels and violates relation Hp ≈ Hc at low temperatures (4.2–70 K).
About the authors
N. V. Dalakova
Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine
Author for correspondence.
Email: dalakova@ilt.kharkov.ua
Ukraine, Kharkiv, 61103
E. Yu. Beliayev
Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine
Email: dalakova@ilt.kharkov.ua
Ukraine, Kharkiv, 61103
V. A. Horielyi
Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine
Email: dalakova@ilt.kharkov.ua
Ukraine, Kharkiv, 61103
O. M. Osmolowskaya
St. Petersburg State University
Email: dalakova@ilt.kharkov.ua
Russian Federation, St. Petersburg, 198504
M. G. Osmolowsky
St. Petersburg State University
Email: dalakova@ilt.kharkov.ua
Russian Federation, St. Petersburg, 198504
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