Table 1.

ε′ at 1 kHz and 20 °C, R_g at 20 °C, and calculated E_g, E_gb, and C_gb of Na_1/2Y_1/2Cu₃Ti_4.1O₁₂ sintered at 1070 °C for 1, 5, and 15 h and sintered at 1080 and 1090 °C for 5 h.

Sample	Rg (Ω)	Eg (eV)	Egb (eV)	Cgb (nF)	ε’
1NYCTTiO	83	0.126	0.764	1.07	5396
2NYCTTiO	54	0.119	0.612	2.38	8370
3NYCTTiO	41	0.114	0.520	10.7	25,565
4NYCTTiO	48	0.117	0.627	2.32	9972
5NYCTTiO	49	0.116	0.675	2.32	8896