What is it about?
It is about the magnetoplastic effect in non-magnetic materials (MPE). This effect says that even in the non-magnetic materials, like Al or semiconductors, one can influence on their micro-hardness properties putting them into a direct magnetic field. The MPE is already confirmed by many experiments and by many authors
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Why is it important?
In the paper the experimental and computer simulations of the effect are presented and explained.
Perspectives
The next step was already made and the effect (MPE) was observed also in crystals of various types and also in crossed static and alternating magnetic fields in the electron paramagnetic resonance (EPR) regime at the resonance frequency niu = g miu_B B/h. A similar resonance and the corresponding resonance change in the microhardness of the ZnO, TGS, and KAP crystals was also detected and studied in ultralow fields: the Earth’s field ~50 μT and the pump field with an amplitude of 3 μT with a frequency of ~1 MHz. This low-frequency resonance becomes very sensitive to the angle theta of rotation of the sample about the Earth’s field (giant anisotropy of the g-factor: g = g_0 cos theta). An important consequence of the existence of magnetic resonance transformations of defects is the recognition of new dangers of modern technical civilization. The mentioned processes can occur uncontrollably in critical elements of constructions and devices, leading to their degradation, when weak background radiofrequency fields are imposed on the Earth’s magnetic field.
Romuald Kotowski
Polish-Japanese Academy of Information Technology
Read the Original
This page is a summary of: New Methodology of Controlling Mechanical Properties of Materials, Key Engineering Materials, August 2017, Trans Tech Publications,
DOI: 10.4028/www.scientific.net/kem.748.369.
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