Exchange Spring in a Heterostructure with Pd0.96Fe0.04 Low-Temperature Ferromagnet
- Authors: Yanilkin I.V.1, Mukhametova E.T.1, Vakhitov I.R.1, Gumarov A.I.1, Yusupov R.V.1, Tagirov L.R.1,2,3
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Affiliations:
- Institute of Physics, Kazan Federal University
- E.K. Zavoisky Physical-Technical Institute, Kazan Scientific Center of the Russian Academy of Sciences
- Institute of Applied Research, Tatarstan Academy of Sciences
- Issue: Vol 45, No 4 (2019)
- Pages: 379-382
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/208282
- DOI: https://doi.org/10.1134/S1063785019040321
- ID: 208282
Cite item
Abstract
The exchange bias of the magnetic hysteresis loop and the exchange-spring effect have been observed in thin-film heterostructures comprising layers of Pd0.96Fe0.04 low-temperature ferromagnet, metallic cobalt, and cobalt monoxide (CoO) grown on single-crystalline sapphire by methods of magnetron sputtering and molecular beam epitaxy in an ultrahigh-vacuum system. It is established that the exchange anisotropy of Pd0.96Fe0.04 layer in Pd0.96Fe0.04/CoO/Co/Al2O3 thin-film heterostructure is absent and the exchange-spring effect in this system is not manifested. In the case of a Pd0.96Fe0.04/Co/CoO/Al2O3 structure, it is shown that, according to the results of magnetometric measurements, the inversion of the order of antiferromagnetic and ferromagnetic layers leads to pinning of the magnetic moment of Pd0.96Fe0.04 layer at the interface with cobalt and to realization of the exchange-spring effect. Additional evidence in favor of this interpretation was obtained using the micromagnetic modeling of magnetic hysteresis loops.
About the authors
I. V. Yanilkin
Institute of Physics, Kazan Federal University
Author for correspondence.
Email: yanilkin-igor@yandex.ru
Russian Federation, Kazan, 420008
E. T. Mukhametova
Institute of Physics, Kazan Federal University
Email: yanilkin-igor@yandex.ru
Russian Federation, Kazan, 420008
I. R. Vakhitov
Institute of Physics, Kazan Federal University
Email: yanilkin-igor@yandex.ru
Russian Federation, Kazan, 420008
A. I. Gumarov
Institute of Physics, Kazan Federal University
Email: yanilkin-igor@yandex.ru
Russian Federation, Kazan, 420008
R. V. Yusupov
Institute of Physics, Kazan Federal University
Email: yanilkin-igor@yandex.ru
Russian Federation, Kazan, 420008
L. R. Tagirov
Institute of Physics, Kazan Federal University; E.K. Zavoisky Physical-Technical Institute, Kazan Scientific Center of the Russian Academy of Sciences; Institute of Applied Research, Tatarstan Academy of Sciences
Email: yanilkin-igor@yandex.ru
Russian Federation, Kazan, 420008; Kazan, 420029; Kazan, 420111