Anisotropy of the Resonance Transformation of the Microhardness of Crystals after Their Exposure in the EPR Scheme in the Earth’s Magnetic Field
| Autor: | V. I. Alshits, E. A. Petrzhik, M. V. Koldaeva |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Materials science Physics and Astronomy (miscellaneous) Solid-state physics Condensed matter physics Potassium hydrogen phthalate Resonance 01 natural sciences Triglycine sulfate Magnetic field law.invention chemistry.chemical_compound Earth's magnetic field chemistry law 0103 physical sciences 010306 general physics Anisotropy Electron paramagnetic resonance |
| Zdroj: | JETP Letters. 107:618-623 |
| ISSN: | 1090-6487 0021-3640 |
| Popis: | 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 Bloc ≫ BEarth in the crystals. |
| Databáze: | OpenAIRE |
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