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Fabrication and Optimization of Type II Silicon Clathrate Films
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Hard BN Clathrate Superconductors.

Xue Li1, Xue Yong2, Min Wu3

  • 1State Key Laboratory of Superhard Materials & Innovation Center for Computational Physics Methods and Software, College of Physics , Jilin University , Changchun , Jilin 130012 , China.

The Journal of Physical Chemistry Letters
|May 4, 2019
PubMed
Summary
This summary is machine-generated.

Researchers predict new sodalite-like BN materials, X(BN)6, exhibiting high hardness and superconducting critical temperatures (Tc). Al(BN)6 shows a predicted Tc of ~47 K, surpassing MgB2.

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Solid-State Chemistry

Background:

  • The quest for hard, high-temperature superconductors is driven by fundamental interest and potential applications.
  • Existing superconductors often lack sufficient hardness or require extreme conditions.

Purpose of the Study:

  • To predict and identify novel hard superconducting materials.
  • To explore sodalite-like boron nitride (BN) frameworks doped with various elements (X) for superconductivity.

Main Methods:

  • Computational simulations were employed to predict material properties.
  • Electron-phonon coupling calculations were utilized to determine superconducting critical temperatures (Tc).

Main Results:

  • A new class of materials, X(BN)6, was predicted to possess both high hardness and high superconducting critical temperatures.
  • The superconducting Tc is dependent on the doping element (X), with Al(BN)6 predicted to reach ~47 K.
  • These sodalite-based phases are predicted to be metastable yet dynamically stable, suggesting potential recoverability.

Conclusions:

  • The study presents a novel strategy for discovering hard, high-Tc superconductors.
  • Doped sodalite-like BN frameworks represent a promising avenue for developing advanced superconducting materials.