Fatigue processes in triglycine sulfate and the effect of a magnetic field on them
| Autor: | E. A. Petrzhik, Radmir V. Gainutdinov, T. R. Volk, E. S. Ivanova, A. K. Lashkova |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Permittivity Phase transition Materials science Condensed matter physics 02 engineering and technology Dielectric 021001 nanoscience & nanotechnology Condensed Matter Physics Magnetostatics 01 natural sciences Triglycine sulfate Electronic Optical and Magnetic Materials Magnetic field Nanoclusters chemistry.chemical_compound Hysteresis Nuclear magnetic resonance chemistry 0103 physical sciences 0210 nano-technology |
| Zdroj: | Physics of the Solid State. 59:569-574 |
| ISSN: | 1090-6460 1063-7834 |
| Popis: | For the first time, fatigue processes in triglycine sulfate crystals were studied using a combination of electrical and scanning probe microscopy methods. Long-term (>100 h) influence of a sinusoidal field with a frequency of 50 Hz and an amplitude of 1 kV/cm lead to a sharp decrease of the permittivity in the phase transition region and degradations of P–E hysteresis loops (a decrease of spontaneous polarization, an increase of coercive and bias fields). Changes in dielectric properties were accompanied by an increase of the defect nanoclusters density and broadening their size distribution spectrum on the (010) cleavage surface. A subsequent exposure of “fatigued” crystals in the static magnetic field of 2 T for 20 min led to hysteresis loop symmetrization, which indicates a magnetoinduced transformation in the structure of defects responsible for fatigue effects. |
| Databáze: | OpenAIRE |
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