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Defect engineering in perovskite oxide thin films.

Yunlong Sun1, Jack Yang, Sean Li

  • 1UNSW Materials and Manufacturing Futures Institute, School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052, Australia. dy.wang@unsw.edu.au sean.li@unsw.edu.au.

Chemical Communications (Cambridge, England)
|August 5, 2021
PubMed
Summary
This summary is machine-generated.

Defect engineering in perovskite oxide thin films is crucial for controlling their electrical and magnetic properties. Understanding and manipulating defects, like defect dipoles, enables precise tuning of material functionalities for advanced microelectronics.

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Solid State Chemistry

Background:

  • Perovskite oxide thin films possess multifunctional properties vital for microelectronics.
  • Defects are inherent in perovskites and significantly influence their electrical, magnetic, and photovoltaic characteristics.
  • Defect engineering offers a pathway to control and optimize these material properties.

Purpose of the Study:

  • To review common defects in perovskite oxide thin films.
  • To discuss factors influencing defect formation and their mechanisms.
  • To highlight defect engineering as a strategy for property modulation.

Main Methods:

  • Literature review of common defects (point defects, dopants, domains, domain walls).
  • Analysis of defect formation factors and mechanisms.
  • Discussion of defect coupling with strains, interfaces, and domain walls.

Main Results:

  • Defects, often as dipoles, alter ion oxidation states, inducing phenomena like ferroelectricity and enhanced conductivity.
  • Coupling defects with epitaxial strains and interfaces offers new modulation strategies.
  • Defect-domain wall interactions provide a universal method for tuning electric and magnetic properties.

Conclusions:

  • Defect engineering is a key strategy for tailoring perovskite oxide thin film properties.
  • Understanding defect chemistry is essential for harnessing their beneficial effects.
  • This review promotes defect engineering for enhancing perovskite functionalities.