Research Article
Dielectric Properties of PbNb2O6 up to 700°C from Impedance Spectroscopy
Table 1
Comparison of recently reported Curie temperatures of orthorhombic PbNb2O6 samples.
| Sample | Sintering | Curie temperature in °C | Temp. (°C) | Time (h) |
| Present | 1270 | 4.5 | for 4.0 MHz, and >574 for 0.5 kHz. | [17] | 1270 | 4.5 | 517 | [18] | 1270 | — | 534 and 540 (both at 10 kHz) | [19] | — | — | 540 (presumably at 80 kHz) | [20] | 1240–1260 | 4 | 530 (at 10 kHz) | [13] | 1270 | 4.5 | 531 (at 1 kHz), 528 (at 1 MHz) and 533 (at 10 MHz) |
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