Abstract
A new physical phenomenon, the magnetoplastic effect, was found and investigated in a series of non-magnetic crystals (NaCl, CsI, LiF, Zn, Al). The phenomenon manifests itself in dislocation displacements as a result of exposing the specimens to a static magnetic field in the absence of mechanical loading. The effect was studied experimentally as a function of the time of magnetic treatment of the samples, the magnitude and orientation of the magnetic field ( B=0.05−;2 T), the temperature ( T=4.2–293 K), the type and concentration of impurities, the density of “forest” dislocations and the frequency ( v=0−200 Hz) of the alternating (over orientation) magnetic field. A strong effect of a weak static electric field ( E=2–30 V cm −1) on the dislocation mobility in NaCl specimens simultaneously exposed to a static magnetic field ( B=0.1−0.4 T) is found (with no electric influence at B=0). A physical interpretation of the phenomenon is proposed. Possible manifestations of the magnetoplastic effect in the internal friction are discussed.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call