Polarisation reversal in trissarcosine calcium chloride

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Abstract
The temperature T, electric field E and pressure p dependence of the switching parameters of trissarcosine calcium chloride (TSCC) such as the switching time ts and the maximum switching current imax are measured. The mobility mu of the domain wall motion is expressed by the relation mu varies as exp(-W/kT), where W is the activation energy for the domain wall motion. The value of W is 0.05 eV at p=0 kbar. The effect of pressure on the switching parameters is dominated by the pressure dependence of W and alpha , and delta W/ delta p is 0.03 eV kbar-1 and delta x/ delta p is 0.14 kV cm-1 kbar-1 at -156 degrees C, 0.18 kV cm-1 kbar-1 at -161 degrees C and 0.22 kV cm-1 kbar-1 at -166 degrees C. The symmetry m of the switching current transient is almost constant ( approximately=0.5) at fields below 2.5 kV cm-1 and increases approximately with E according to the relation m varies as E0.3 at fields above 2.5 kV cm-1. Such a switching current transient is explained by the phenomenological theory of the polarisation reversal.