Ferroelectricity in {N(CH3)4}2ZnI4
1988 年 57 巻 11 号 p. 3698-3701
詳細
1988 年 57 巻 11 号 p. 3698-3701
Dielectric properties of the {N(CH3)4}2ZnI4 crystal were studied between room temperature and 4.2 K. Two phase transitions were seen from dielectric constant anomalies at T1=254 K and Tc=210 K on cooling. Ferroelectric hysteresis loops were observed along the c-direction below Tc with a low frequency applied field of 0.0025 Hz. The spontaneous polarization obtained by pyroelectric charge measurement tended to be 2.5×10−3 C/m2 at 0 K.
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