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Table 3 The values of s and hopping frequency for the study composites at room temperature and 120°C

From: YBCO as a transition metal oxide ceramic material for energy storage

Sample Mn3O4 Co3O4 Cr2O3
YBCO + x   Room temp. 120 °C   Room temp. 120 °C   Room temp. 120 °C
ω p S S ω p S S ω p S S
YBCO 6.28 × 106 0.237 0.107 6.28 × 106 0.237 0.107 6.28 × 106 0.237 0.107
X = 0.1 6.28 × 106 0.205 0.191 6.28 × 106 0.194 0.064 6.28 × 105 0.133 0.077
X = 0.2 6.28 × 106 0.191 0.190 6.28 × 106 0.285 0.135 6.28 × 105 0.264 0.189
X = 0.3 6.28 × 106 0.222 0.237 6.28 × 106 0.962 0.277 6.28 × 105 0.543 0.195
X = 0.4 3.14 × 106 0.048 −0.245 6.28 × 106 0.291 0.175 6.28 × 105 0.687 1.334
X = 0.5 6.28 × 106 0.423 0.407 6.28 × 106 0.187 0.172 6.28 × 106 0.263 0.212