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We report on the results of studies of dielectric properties of loparite-(Ce), a naturally occurring member of the perovskite-type family of materials, in the temperature range of 80–400 K. A strong frequency dispersion attributable to disorder and a dielectric anomaly have been observed in the vicinity of T = 157 K. The behavior of the inverse dielectric permittivity 1/ε′(T) has been found to be well described by the Curie–Weiss law with parameters C = 2.2 × 105 K−1 and Tm = 157 K. Studies of a dielectric hysteresis demonstrated the presence of ferroelectric loops below Tm ≈ 157 K, which points to the existence of a ferroelectric phase transition at Tm. The behaviors of spontaneous polarization, remanent polarization, and coercive field indicate that the ferroelectric phase transition is of the first-order type.

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