Scholarlink

Abstract <p>The growth of a repolarization nucleus in an electric field is hindered by cohesive forces acting near its tips on the adjacent domain walls. They can take large values when the distance between domain walls becomes comparable to their thickness. It is shown that the cohesive forces are expressed via the coefficients of the Ginzburg–Landau energy expansion, which includes a gradient contribution. For&#xa0;a&#xa0;uniaxial ferroelectric, the maximum internal field associated with the gradient interaction of the domain walls has been estimated. It is related to the internal coercive field <i>E</i><sub><i>c</i>0</sub> of the Ginzburg–Landau theory as <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11445_2025_8179_Article_IEq1.gif" Format="GIF" Height="17" Rendition="HTML" Resolution="72" Type="Linedraw" Width="45" /> </InlineMediaObject> <EquationSource Format="TEX">\({{E}_{{{\text{max}}}}}{\text{*}}\)</EquationSource> <!--Cryst2560048Belov-m1--> </InlineEquation>/<i>E</i><sub><i>c</i>0</sub>&#xa0;= 3√3/8&#xa0;≈ 0.65.</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

Interaction of Ferroelectric Domain Walls and Shape of Equilibrium Repolarization Nuclei

  • 期刊论文

  • 发表日期：

    2025年8月1日

查看全文
  • A. Yu. Belov

摘要

Abstract

The growth of a repolarization nucleus in an electric field is hindered by cohesive forces acting near its tips on the adjacent domain walls. They can take large values when the distance between domain walls becomes comparable to their thickness. It is shown that the cohesive forces are expressed via the coefficients of the Ginzburg–Landau energy expansion, which includes a gradient contribution. For a uniaxial ferroelectric, the maximum internal field associated with the gradient interaction of the domain walls has been estimated. It is related to the internal coercive field Ec0 of the Ginzburg–Landau theory as \({{E}_{{{\text{max}}}}}{\text{*}}\) /Ec0 = 3√3/8 ≈ 0.65.