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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2019, Volume 110, Issue 4, Pages 241–247
DOI: https://doi.org/10.1134/S0370274X19160069
(Mi jetpl5978)
 

This article is cited in 2 scientific papers (total in 2 papers)

CONDENSED MATTER

Electron paramagnetic resonance in Ho$_x$Lu$_{1-x}$B$_{12}$ dodecaborides

M. I. Gilmanova, S. V. Demishevba, B. Z. Malkinc, A. N. Samarinab, N. Yu. Shitsevalovad, V. B. Filipovd, N. E. Sluchankoab

a Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow, Russia
b Moscow Institute of Physics and Technology, State University, Dolgoprudnyi, Moscow region, Russia
c Kazan Federal University, Kazan, Russia
d Frantsevich Institute for Problems of Materials Science, National Academy of Sciences of Ukraine, Kyiv, Ukraine
Full-text PDF (903 kB) Citations (2)
References:
Abstract: The high-frequency ($60$ GHz) electron paramagnetic resonance is studied in Ho$_x$Lu$_{1-x}$B$_{12}$ single crystals at low temperatures ($2$$80$ K) in an applied magnetic field up to $7$ T within a wide doping range, $0.01 \leqslant x\leqslant 1$. These compounds are characterized by the presence of a low-temperature cage glass phase with random displacements of magnetic holmium ions from the centrosymmetric position in B$_{12}$ boron cuboctahedra. For the samples with $x\geqslant 0.1$, it is demonstrated that the electron paramagnetic resonance in the form of a single broad line with a $g$-factor of about $5$ appears in the cage glass phase at $T < T^*= 60$ K because of the decrease in the relaxation rate for magnetic moments of Ho$^{3+}$ ions. For the compounds with $x > 0.3$, the pronounced broadening of the resonance line and a steep decrease in the $g$-factor related to antiferromagnetic correlations is observed on cooling at $T < 30$ K. The performed simulation of the electron paramagnetic resonance spectra suggests the dominant role of the exchange interaction effects and positional disorder in determining the characteristic features of spin dynamics in Ho$_x$Lu$_{1-x}$B$_{12}$.
Funding agency Grant number
Russian Science Foundation 17-12-01426
This work was supported by the Russian Science Foundation (project no. 17-12-01426).
Received: 09.07.2019
Revised: 09.07.2019
Accepted: 14.07.2019
English version:
Journal of Experimental and Theoretical Physics Letters, 2019, Volume 110, Issue 4, Pages 266–272
DOI: https://doi.org/10.1134/S0021364019160057
Bibliographic databases:
Document Type: Article
Language: Russian
Citation: M. I. Gilmanov, S. V. Demishev, B. Z. Malkin, A. N. Samarin, N. Yu. Shitsevalova, V. B. Filipov, N. E. Sluchanko, “Electron paramagnetic resonance in Ho$_x$Lu$_{1-x}$B$_{12}$ dodecaborides”, Pis'ma v Zh. Èksper. Teoret. Fiz., 110:4 (2019), 241–247; JETP Letters, 110:4 (2019), 266–272
Citation in format AMSBIB
\Bibitem{GilDemMal19}
\by M.~I.~Gilmanov, S.~V.~Demishev, B.~Z.~Malkin, A.~N.~Samarin, N.~Yu.~Shitsevalova, V.~B.~Filipov, N.~E.~Sluchanko
\paper Electron paramagnetic resonance in Ho$_x$Lu$_{1-x}$B$_{12}$ dodecaborides
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  • This publication is cited in the following 2 articles:
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    Письма в Журнал экспериментальной и теоретической физики Pis'ma v Zhurnal Иksperimental'noi i Teoreticheskoi Fiziki
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