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Updated: May 21, 2026

Measuring Magnetically-Tuned Ferroelectric Polarization in Liquid Crystals
07:03

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Published on: August 15, 2018

Interface control of bulk ferroelectric polarization.

P Yu1, W Luo, D Yi

  • 1Department of Physics, University of California, Berkeley, CA 94720, USA. yupu.phy@gmail.com

Proceedings of the National Academy of Sciences of the United States of America
|June 1, 2012
PubMed
Summary
This summary is machine-generated.

Researchers precisely engineered complex oxide interfaces at the atomic level to control ferroelectric polarization. This breakthrough utilizes interfacial valence mismatch to tune electrostatic potential, impacting material functionality.

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Area of Science:

  • Condensed matter physics
  • Materials science
  • Surface science

Background:

  • Atomic-level control of material interfaces unlocks novel properties.
  • Polar discontinuities at complex oxide interfaces are a key research area.

Purpose of the Study:

  • To demonstrate control of ferroelectric polarization in heteroepitaxial bilayers via atomic-scale interface engineering.
  • To investigate the influence of interfacial valence mismatch on electrostatic potential and ferroelectric states.

Main Methods:

  • Combination of experimental measurements and theoretical calculations.
  • Atomic-scale interface engineering.
  • Analysis of ferroelectric hysteresis loops and biased voltage.

Main Results:

  • Precise atomic-scale engineering successfully controlled bulk ferroelectric polarization.
  • Interfacial valence mismatch was exploited to influence the electrostatic potential step.
  • The electrostatic potential step directly determined the ferroelectric state and biased voltage.

Conclusions:

  • Atomic-scale interface engineering offers a powerful method to control ferroelectric properties.
  • The phenomenon is general, observed across diverse ferroelectric and perovskite systems.
  • Understanding interfacial effects is crucial for designing advanced functional materials.