Dynamic tuning of dielectric permittivity in BaTiO3 via electrical biasing

Shikhar Misra; Matias Kalaswad; Di Zhang; Haiyan Wang

doi:10.1080/21663831.2020.1757527

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Dynamic tuning of dielectric permittivity in BaTiO3 via electrical biasing

Reports | 更新时间：2026-08-19

- Dynamic tuning of dielectric permittivity in BaTiO3 via electrical biasing
- Materials Research Letters Vol. 8, Issue 9, Pages: 321-327(2020)
- 作者机构：
  
  1. School of Materials Engineering Purdue University West Lafayette
  2. School of Materials Engineering Purdue University West Lafayette IN USA
  3. School of Electrical and Computer Engineering Purdue University West Lafayette
- 作者简介：
- 基金信息：
- DOI：10.1080/21663831.2020.1757527
  CLC：
- Online First：19 May 2020，
  
  Published：2020
- 稿件说明：
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Shikhar Misra, Matias Kalaswad, Di Zhang, et al. Dynamic tuning of dielectric permittivity in BaTiO3 via electrical biasing[J]. Materials Research Letters, 2020, 8(9): 321-327.
DOI：

Shikhar Misra, Matias Kalaswad, Di Zhang, et al. Dynamic tuning of dielectric permittivity in BaTiO3 via electrical biasing[J]. Materials Research Letters, 2020, 8(9): 321-327. DOI： 10.1080/21663831.2020.1757527.

摘要

Abstract

BSTRACTDynamic tuning of optical properties is technologically important for the development of future integrated electronic and photonic devices. Here

we demonstrate the electrically tunable permittivity in optical frequency in epitaxial BaTiO

(BTO) thin films using spectroscopic ellipsometer measurements under DC bias condition. The lattice tetragonal distortion and domain switching of biased BTO is evident based on the increased anisotropy in permittivity in-plane and out-of-plane. Specifically

out-of-plane permittivity

arising from the

domains

shows a continuous decrease with the applied voltage

relative to the in-plane permittivity

arising from the

domains. The dielectric constant can also be reversibly adjusted through electric-reset cycles.

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