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

Figure 16

(a) Variation of the impedance phase angle, 𝛿=tan⁻¹−(𝑍_real/𝑍_im), with frequency at different temperatures (255°C, 340°C, 400°C, 450°C, 500°C, and 700°C). (b) Variation of the impedance phase angle, 𝛿=tan⁻¹−(𝑍_real/𝑍_im), with frequency at a few important temperatures (570°C, 573°C, and 600°C).

(a)

(b)