Anisotropy of the Resonance Transformation of the Microhardness of Crystals after Their Exposure in the EPR Scheme in the Earth’s Magnetic Field


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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 BEarth. Rotations of all samples with respect to the direction BEarth by angle θ reduce the resonance frequency in proportion to cosθ. The observed anisotropy has been attributed to the presence of their own local magnetic fields BlocBEarth in the crystals.

Sobre autores

V. Alshits

Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics

Autor responsável pela correspondência
Email: valshits@mail.ru
Rússia, Moscow, 119333

M. Koldaeva

Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics

Email: valshits@mail.ru
Rússia, Moscow, 119333

E. Petrzhik

Shubnikov Institute of Crystallography, Federal Research Center Crystallography and Photonics

Email: valshits@mail.ru
Rússia, Moscow, 119333

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