Scholarlink

<p>Temperature dependencies of the linear permittivity for nanoporous Teflon matrices (220&#xa0;nm) filled with a molecular ferroelectric of thiourea are investigated. The obtained results for single crystals of thiourea are also analyzed for comparison. The measurements are carried out upon heating and cooling in a range from 100&#xa0;K to room temperature. It was revealed that the ferroelectric phase transition point from I → II of thiourea in the porous Teflon was found to be lower than those of the single-crystal thiourea. The Landau–Ginzburg theory with the consideration of the surface and size effects is utilized to explain the observed anomaly.</p> Graphical abstract <p></p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Experimental and theoretical analysis of dielectric properties of thiourea embedded in nanoporous Teflon

  • 期刊论文

  • 发表日期：

    2025年1月27日

查看全文
  • Hoai Thuong Nguyen,
  • A. Yu. Milinsky,
  • S. V. Baryshnikov

摘要

Temperature dependencies of the linear permittivity for nanoporous Teflon matrices (220 nm) filled with a molecular ferroelectric of thiourea are investigated. The obtained results for single crystals of thiourea are also analyzed for comparison. The measurements are carried out upon heating and cooling in a range from 100 K to room temperature. It was revealed that the ferroelectric phase transition point from I → II of thiourea in the porous Teflon was found to be lower than those of the single-crystal thiourea. The Landau–Ginzburg theory with the consideration of the surface and size effects is utilized to explain the observed anomaly.

Graphical abstract