Magnetoplastic Effect in NaNO₂ Ferroelectric Crystals

B. I. Smirnov, N. N. Peschanskaya, and V. I. Nikolaev

Ioffe Physicotechnical Institute, Russian Academy of Sciences, Politekhnicheskaya ul. 26, St. Petersburg, 194021 Russia

e-mail: smir.bi@pop.ioffe.rssi.ru

Received May 22, 2001

Abstract—This paper reports on a laser interferometric study of the effect of a dc magnetic field (MF) on the
rate of plastic deformation (creep) of NaNO₂ ferroelectric crystals under compression. It is established that
the application of a dc MF to a loaded specimen results in an increase in the creep rate and that removal of the
MF brings about a decrease in . Subjecting an unloaded specimen to a dc MF beforehand also affects its strain
rate under the subsequent loading. The observed magnetoplastic effect is most clearly pronounced within a cer-
tain interval, and the magnitude of this effect for the NaNO₂ ferroelectric is several times larger than that for
LiF crystals. © 2001 MAIK “Nauka/Interperiodica”.

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