Dataset for 'The thermodynamic potential of ferroelectric nematic liquid crystals and consequences for polarisation switching'

The dataset contains spontaneous polarisation data for the ferroelectric nematic liquid crystal, FNLC-919. The tests are done using the current reversal technique (as described by Miyasato et al. in 1983) which gives values of polarisation when a voltage is applied to a sample, so the data mainly consists of polarisation values for the samples taken at a range of voltages. Tests were done to check the polarisation response in four different thicknesses (4, 10, 23, and 46 microns) as well as to check the longevity of a sample when preparation conditions were varied (i.e. if it was prepared in the polar (ferroelectric nematic) phase or one of the nonpolar phases (nematic or isotropic)).

本数据集包含铁电向列相液晶FNLC-919的自发极化（spontaneous polarisation）数据。本次测试采用电流反转技术（current reversal technique，详见Miyasato等人1983年的研究报道），该方法可在向样品施加电压时获取极化数值，因此本数据集主要包含不同电压下采集的样品极化数据。此外，测试还针对4种不同厚度（4、10、23与46微米）的样品考察了其极化响应，并通过改变样品的制备相态——即样品在极化相（铁电向列相）或非极化相（向列相或各向同性相）中制备——验证了样品的使用寿命稳定性。