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High-Throughput Scanning Second-Harmonic-Generation Microscopy for Polar Materials.

Yuan Zhang1,2, Yangchun Tan3, Yangda Dong1,2

  • 1Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, P. R. China.

Advanced Materials (Deerfield Beach, Fla.)
|March 14, 2023
PubMed
Summary
This summary is machine-generated.

A new high-throughput microscope rapidly screens polar materials for advanced applications. This technique accelerates the discovery of novel ferroelectrics and complex oxide films, supporting the Materials Genome Initiative.

Keywords:
ferroelectricshigh-throughput analysispolar materialspolarizationsecond-harmonic generation

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Optics

Background:

  • The Materials Genome Initiative (MGI) seeks to accelerate materials discovery and deployment.
  • High-throughput characterization is crucial for rapid screening of candidate materials.
  • Polar materials, such as ferroelectrics, possess unique properties vital for advanced technologies.

Purpose of the Study:

  • To develop a high-throughput scanning second-harmonic-generation (SHG) microscope for rapid screening of polar materials.
  • To demonstrate the microscope's capability in analyzing domain structures and material gradients.
  • To support the Materials Genome Initiative's goals for accelerated materials development.

Main Methods:

  • Development of a scanning second-harmonic-generation microscope with automated partitioning, precise positioning, and high-speed scanning.
  • Investigation of standard ferroelectrics like periodically poled lithium niobate and lead zirconate titanate (PZT) thin films.
  • Application to compositional-gradient BaTiO3-SrTiO3 and thickness-gradient PZT films to showcase high-throughput analysis.

Main Results:

  • The developed SHG microscope successfully revealed microscopic domain structures in ferroelectric materials.
  • High-throughput screening capabilities were demonstrated on gradient thin films.
  • The SHG signal was shown to correlate with macroscopic remnant polarization, unaffected by leakage current or electrostatic interference.

Conclusions:

  • The high-throughput SHG microscopy technique is effective for rapid probing and screening of polar materials.
  • This method facilitates the detailed analysis of domain structures and polarization in complex materials.
  • The developed technique contributes to the Materials Genome Initiative by accelerating the discovery and development of advanced polar materials.