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Table 1 Dielectric constant ε′ for doped YBCO ceramic samples at 50 Hz and 1MHz at room temperature

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

Sample Mn3O4 Co3O4 Cr2O3
YBCO + x 50 Hz 1 MHz 50 Hz 1 MHz 50 Hz 1 MHz
X = 0.1 9.45 × 104 1.55 × 101 4.02 × 104 2.23 × 101 1.13 × 106 8.38 × 103
X = 0.2 1.17 × 104 1.33 × 101 3.83 × 105 5.25 × 101 6.54 × 105 3.85 × 103
X = 0.3 1.36 × 106 2.51 × 103 3.01 × 103 4.54 × 101 1.23 × 106 1.05 × 104
X = 0.4 2.14 × 105 4.76 × 102 3.35 × 103 3.98 × 101 6.21 × 102 2.37 × 101
X = 0.5 7.95 × 104 5.50 × 102 1.03 × 105 7.98 × 101 5.92 × 105 5.09 × 101