The fluctuation-driven dielectric properties of liquid crystalline 8OCB and its nanocolloids

The results of broadband dielectric spectroscopy (BDS) studies 4'-(Octyloxy)-4-biphenylcarbonitrile (8OCB, CAS no: 52364-73-5) liquid crystal and its colloids doped with paraelectric BaTiO3 nanoparticles (diameter d = 50 nm, the cubic crystal system, nanoparticles concentrations: 0.4, 0.5, 1 wt%). The data was collected on cooling from 373.2 K to 273.2 K. Complex dielectric permittivity measurements were performed using two analyzers: Novocontrol Alpha-A analyzer in the frequency range from 1 to 10MHz and Keisight analyzer in the range from 1 MHz to 3 GHz. The results include frequency changes in the real (ε’( f )) and the imaginary (ε’’( f )) part of the complex dielectric permittivity, temperature changes of dielectric constant, loss curve maximum, relaxation time distribution parameters, and relaxation times.The names of the individual files correspond to the numbering of the figures in the paper: Łoś, Joanna, et al. "The fluctuation-driven dielectric properties of liquid crystalline 8OCB and its nanocolloids." Soft Matter 18.24 (2022): 4502-4512. DOI: https://doi.org/10.1039/D2SM00105EFiles included in this collection:Fig01 – dielectric spectra of 8OCB and colloids with 0.5% and 1% addition of BaTiO3 measured at 360 K, 345 K, and 330 K.Fig02_03 – the dielectric constant as a function of temperature.Fig04 – the loss curve maximum as a function of temperature.Fig05 – m and n parameters, describing relaxation time distribution, as a function of temperature.Fig06 – relaxation time as a function of reciprocal temperature.Fig07_08 – DC conductivity as a function of relaxation time.Fig09 – dielectric spectra measured in 8OCB+0.5%BaTiO3 sample at 370 K, 353 K, and 330 K.

宽带介电谱（broadband dielectric spectroscopy, BDS）研究的结果涉及4'-(辛氧基)-4-联苯甲腈（8OCB，CAS号：52364-73-5）液晶及其掺杂顺电（paraelectric）BaTiO₃纳米颗粒（直径d=50 nm，立方晶系，纳米颗粒浓度：0.4、0.5、1质量百分比）的胶体。数据采集于从373.2 K冷却至273.2 K的过程中。复介电常数的测量使用了两台分析仪：Novocontrol Alpha-A分析仪（频率范围为1至10 MHz）和Keisight分析仪（频率范围为1 MHz至3 GHz）。研究结果涵盖复介电常数实部ε'(f)与虚部ε''(f)的频率变化、介电常数的温度变化、损耗曲线最大值、弛豫时间分布参数以及弛豫时间。各个文件对应论文《液晶8OCB及其纳米胶体的涨落驱动介电特性》（Łoś, Joanna等人，《Soft Matter》2022年第18卷第24期，页码4502-4512，DOI：https://doi.org/10.1039/D2SM00105E）中图的编号。本数据集包含的文件如下：
Fig01 – 在360 K、345 K和330 K下测量的8OCB及添加0.5%和1% BaTiO₃的胶体的介电谱。
Fig02_03 – 介电常数随温度的变化关系。
Fig04 – 损耗曲线最大值随温度的变化关系。
Fig05 – 描述弛豫时间分布的m和n参数随温度的变化关系。
Fig06 – 弛豫时间随倒温度的变化关系。
Fig07_08 – 直流电导率随弛豫时间的变化关系。
Fig09 – 在370 K、353 K和330 K下测量的8OCB+0.5%BaTiO₃样品的介电谱。