Reversible Resistive Switching in Electrically Nonhomogeneous La_0.67Ca_0.33MnO₃Thin Films by Short Electrical Pulses

Abstract

Resistance changes in thin electrically nonhomogeneous La 0.67 Ca 0.33 MnO 3 films were investigated using electrical pulses of nanosecond duration in the 80-300 K temperature range. Two types of reversible switching to higher resistive states with different starting temperature induced by series of the positive pulses were observed. Possible mechanisms of the resistance switching by short electrical pulses in the vicinity of Tm and at 80-90 K are discussed.

Modification of Electrical Properties of Thin La0.67Ca0.33MnO3 Films by Pulsed Thermocycling

“…3 by an arrow. Beginning stage of explanation of the switching near T m was presented in [12]. Extending these results we suppose that when the fields reach 10 kV/cm local heating of PM parts becomes apparent.…”

“…Fast cooling to ambient temperature also plays an important role in retaining of structural nonhomogeneities in thin films. Experimental results representing resistance switching, induced by pulsed thermocycling are presented in [12]. It was found that the duration of pulse in the series and temperatures runs during measurements plays an significant role on the results.…”