Fig. 7. Plot of ln[(1/K)-(1/Km)] vs. ln(T-Tm) when different dopants are added to BT. The inset shows the temperature dependence of the reciprocal dielectric constant of BT with different dopants added. (a) BT-Nb5, (b) BT-Ta5, (c) BT-Bi3, and (d) BT-Sb3.
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