A study of helium-3 nuclear magnetic relaxation mechanism in contact with 20 nm DyF 3 nanoparticles.

Autor: Garaeva A; Kazan Federal University, Institute of Physics, Kremlevskaya 18, Kazan 420008, Russian Federation., Boltenkova E; Kazan Federal University, Institute of Physics, Kremlevskaya 18, Kazan 420008, Russian Federation. Electronic address: katarina.kondratyeva@gmail.com., Safiullin K; Kazan Federal University, Institute of Physics, Kremlevskaya 18, Kazan 420008, Russian Federation., Romanova I; Kazan Federal University, Institute of Physics, Kremlevskaya 18, Kazan 420008, Russian Federation., Alakshin E; Kazan Federal University, Institute of Physics, Kremlevskaya 18, Kazan 420008, Russian Federation.
Jazyk: angličtina
Zdroj: Journal of magnetic resonance (San Diego, Calif. : 1997) [J Magn Reson] 2024 May; Vol. 362, pp. 107672. Date of Electronic Publication: 2024 Apr 22.
DOI: 10.1016/j.jmr.2024.107672
Abstrakt: The spin kinetics of adsorbed and liquid 3 He in contact with a mixture of LaF 3 (99.67 %) and DyF 3 (0.33 %) 20 nm powders at temperatures of 1.5-4.2 K in magnetic fields up to 505mT was studied by pulsed nuclear magnetic resonance (NMR). Two-component of nuclear magnetic relaxation was observed in the experiment and theoretical relaxation model was proposed. The possible explanation of this phenomena can be carried out by a model that consider the exchange of magnetization of helium-3 nuclei located in the adsorbed layer and in the bulk of the liquid. The proposed relaxation model can be applied to other systems with the strong influence of adsorbed layer.
Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Egor Alakshin reports financial support was provided by Russian Science Foundation. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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Databáze: MEDLINE
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