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 Pis'ma v Zh. Èksper. Teoret. Fiz., 2018, Volume 107, Issue 10, Pages 650–655 (Mi jetpl5576)

CONDENSED MATTER

Anisotropy of the resonance transformation of the microhardness of crystals after their exposure in the EPR scheme in the Earth’s magnetic field

V. I. Alshits, M. V. Koldaeva, E. A. Petrzhik

Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics, Russian Academy of Sciences, Moscow, Russia

Abstract: It is shown that the preliminary exposure of ZnO, triglycine sulfate, and potassium hydrogen phthalate crystals in ultralow crossed magnetic fields—Earth’s magnetic field and ac pump field — leads to a resonance change in their microhardness. The resonance frequency of microhardness peaks is determined by the classical condition of electron paramagnetic resonance only at certain orientations of the crystals with respect to the Earth’s magnetic field $B_{Earth}$. Rotations of all samples with respect to the direction $B_{Earth}$ by angle $\theta$ reduce the resonance frequency in proportion to $\cos\theta$. The observed anisotropy has been attributed to the presence of their own local magnetic fields $B_{loc}\gg B_{Earth}$ in the crystals.

 Funding Agency Grant Number Russian Academy of Sciences - Federal Agency for Scientific Organizations 32007-ÃÇ/×3363/26

DOI: https://doi.org/10.7868/S0370274X18100065

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English version:
Journal of Experimental and Theoretical Physics Letters, 2018, 107:10, 618–623

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Document Type: Article

Citation: V. I. Alshits, M. V. Koldaeva, E. A. Petrzhik, “Anisotropy of the resonance transformation of the microhardness of crystals after their exposure in the EPR scheme in the Earth’s magnetic field”, Pis'ma v Zh. Èksper. Teoret. Fiz., 107:10 (2018), 650–655; JETP Letters, 107:10 (2018), 618–623

Citation in format AMSBIB
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