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Automation of Mode Locking in a Nonlinear Polarization Rotation Fiber Laser through Output Polarization Measurements
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Polar Metallocenes.

Haiwu Zhang1, B Yu Yavorsky2, R E Cohen3,4

  • 1Department of Earth and Environmental Sciences, Ludwig-Maximilians Universität München, Theresienstr., 41 80333 Munich, Germany. zhw3789@sina.com.

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|February 1, 2019
PubMed
Summary
This summary is machine-generated.

Researchers explored crystalline polar metallocenes for advanced electronic applications. Mn₂(C₉H₉N)₂ shows promise as a multiferroic material due to its polar and ferromagnetic properties, indicating high potential for piezoelectric and ferroelectric devices.

Keywords:
DFTmaterials designmetallocenespolarizationvdW interactions

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Area of Science:

  • Materials Science
  • Solid State Physics
  • Computational Chemistry

Background:

  • Crystalline polar metallocenes are investigated for their potential as piezoelectric, ferroelectric, and multiferroic materials.
  • Understanding their electronic and magnetic properties is crucial for developing advanced functional materials.

Purpose of the Study:

  • To computationally investigate the structural, electronic, and magnetic properties of crystalline polar metallocenes.
  • To identify promising candidates for multiferroic applications.

Main Methods:

  • Density Functional Theory (DFT) calculations were employed.
  • Computed structural properties, phase energy differences, molecular configurations, and magnetic states.
  • Calculated polarizations and molecular dipole moments using Wannier function analysis.

Main Results:

  • Mn₂(C₉H₉N)₂ was identified as the most promising multiferroic candidate due to its polar and ferromagnetic ground state.
  • Predicted crystalline polarizations were 30-40% higher than isolated molecule dipole moments.
  • This enhancement is attributed to local effects of the self-consistent internal electric field, indicating high polarizabilities.

Conclusions:

  • Crystalline polar metallocenes, particularly Mn₂(C₉H₉N)₂, exhibit significant potential for multiferroic applications.
  • The enhanced polarization in the crystalline state highlights their suitability for piezoelectric and ferroelectric devices.
  • Computational methods like DFT are effective in predicting the properties of novel functional materials.