  The present letter explores the electrocaloric effect (ECE) in the lead free
oxide Ba0.8Ca0.2Ti0.95Ge0.05O3 ceramics (BCTG). The electrocaloric responsivity
(dT/dE) was determined by two different methods using the Maxwell relationship
(dT/dE)~(dP/dT)_E. In a first well-known indirect method, P-E hysteresis loops
were measured in a wide temperature range from which the pyroelectric
coefficient p_E=(dP/dT)_E and thus (dT/dE) were determined by derivation of
P(T,E) data. In the second novel method the pyroelectric coefficient p_E and
consequently the electrocaloric responsivity was determined by direct
measurements of the pyroelectric currents under different applied electric
fields. Within the experimental error good agreement was obtained between two
methods with an electrocaloric responsivity equal to 0.18 +/- 0.05 10-6 K.m.V-1
was obtained at about 410 K
