Dielectric Properties of PbNb₂O₆ up to 700°C from Impedance Spectroscopy

Table 2

Result of fitting 𝜀 versus 𝑇 data to the modified Curie-Weiss equation, as detailed in the text.

Frequency (Hz)	𝑇𝑚 (°C)	𝐶𝑤×10^5 (°C)	𝛾	𝜀^′max
5.5 M	579.5 ± 4	2.187	1.141	5472.6
3.0 M	575.2 ± 2	1.739	1.136	1876.1
2.0 M	574.8 ± 1	1.471	1.110	1574.2
50 k	574.9 ± 1	1.236	1.035	1752.2
1.0 k	573.8 ± 1	5.237	1.283	3613.9
0.5 k	573.0 ± 1	2.635	1.117	3632.5
0.1 k	572.5 ± 1	0.877	0.744	7103.5