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This article is cited in 17 scientific papers (total in 17 papers)
CONDENSED MATTER
Spin kinetics of liquid $^3$He in contact with a DyF$_3$ micropowder at ferromagnetic ordering of Dy$^{3+}$ ions
E. M. Alakshina, E. I. Kondratyevaab, V. V. Kuzmina, K. R. Safiullinab, A. A. Stanislavovasa, A. V. Savinkova, A. V. Klochkova, M. S. Tagirovab a Institute of Physics, Kazan Federal University, Kazan, Russia
b Institute of Applied Research, Tatarstan Academy of Sciences, Kazan, Russia
Abstract:
The spin kinetics of liquid $^3$He in contact with a mixture of LaF$_3$ ($99.67\%$) and DyF$_3$ ($0.33\%$) micropowders at temperatures of $1.5$–$3$ K has been studied by pulsed nuclear magnetic resonance (NMR). The DyF$_3$ is a dipolar dielectric ferromagnet with the phase transition temperature $T_c= 2.55$ K, whereas the diamagnetic fluoride LaF$_3$ is a diluting substance for the optimal observation conditions of $^3$He NMR in powder pores. The magnetic phase transition in DyF$_3$ is accompanied by a considerable change in the character of fluctuations of the magnetic moments of dysprosium ions, which affect the spin kinetics of $^3$He in contact with the substrate. Significant changes in the relaxations rates of the longitudinal and transverse magnetizations of $^3$He have been discovered in the region of magnetic ordering of the solid matrix. The technique of studying the static and fluctuating magnetic fields of a solid matrix at low temperatures using liquid $^3$He as a probe has been proposed.
Received: 15.11.2017 Revised: 29.11.2017
Citation:
E. M. Alakshin, E. I. Kondratyeva, V. V. Kuzmin, K. R. Safiullin, A. A. Stanislavovas, A. V. Savinkov, A. V. Klochkov, M. S. Tagirov, “Spin kinetics of liquid $^3$He in contact with a DyF$_3$ micropowder at ferromagnetic ordering of Dy$^{3+}$ ions”, Pis'ma v Zh. Èksper. Teoret. Fiz., 107:2 (2018), 115–118; JETP Letters, 107:2 (2018), 111–114
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https://www.mathnet.ru/eng/jetpl5477 https://www.mathnet.ru/eng/jetpl/v107/i2/p115
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Abstract page: | 168 | Full-text PDF : | 22 | References: | 17 | First page: | 5 |
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