On the effect of a magnetic field on the yield point and kinetics of macroplasticity in LiF crystals期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

On the effect of a magnetic field on the yield point and kinetics of macroplasticity in LiF crystals

Authors:	A. A. Urusovskaya V. I. Al’shits A. E. Smirnov N. N. Bekkauer

Affiliation:	(1) Institute of Crystallography, Russian Academy of Sciences, 117333 Moscow, Russia

Abstract:	A strong effect of a static magnetic field B on active deformation kinetics ( =const) in LiF crystals is observed. This is a threshold effect with respect to B and ; it is observed only for B> B _c (B≃0.4 T) and $dot in < dot in _c (dot in _c approx 10^{ - 4} s^{ - 1} )$ . Magnetic sensitivity is exhibited by the yield stress τ_y, which decreases by approximately a factor of 1.5 for B=0.48 T, and by the stage-II and stage-III hardening coefficients θ_II and θ _III, the former decreasing and the latter increasing in a magnetic field. A physical interpretation is proposed for the observed behavior. Pis’ma Zh. éksp. Teor. Fiz. 65, No. 6, 470–474 (25 March 1997)

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