Sign in Subscribe
Alloys

Research Uncovers Potential of Cobalt-Doped MgS Alloys for Optoelectronic and Spintronic Applications

Strategic Insights

— 1 min read

Researchers at Princess Nourah Bint Abdulrahman University have conducted a thorough investigation into the effect of cobalt doping on the properties of MgS, a non-magnetic semiconductor. The study, published in Physica B-condensed Matter, employed first principles computations to examine the geometrical stability, magneto-electronic, and optical properties of Co-MgS configurations. The findings suggest that these alloys exhibit potential for optoelectronic and spintronic applications due to their unique properties.

Key Takeaways:

  • The research employed first principles computations to examine the effect of cobalt doping on MgS properties.
  • The Co-MgS configurations were found to be geometrically and thermodynamically stable.
  • The study revealed that cobalt doping induces spin polarization, leading to asymmetric spin-dependent electronic properties.
  • Lightly doped Co-MgS alloys exhibit a dilute magnetic semiconducting state, while densely doped Co-MgS systems exhibit a half metallic ferromagnetic state.
  • The Co-3d state along S-3p states contributes to the emergence of the ferromagnetic phase.
  • The optical parameters, including absorption, scattering, refraction, and dielectric function, were explored for respective alloys.
  • Peak absorption values were found in the ultra-violet (UV) region for Mg0.9375Co0.0625S and Mg0.875 Co0.125S alloys.
  • The research concluded that the highest absorption and low reflectivity in the UV zone, along with dilute magnetic semiconducting and half metallicity with ferromagnetic ordering, make these alloys an appropriate option for optoelectronic and spintronic applications.

Statistics:

  • 3.9 eV: mBJ predicted bandgap of pristine MgS.
  • 5.8-6.4 eV: peak absorption range in the ultra-violet (UV) region for Mg0.9375Co0.0625S and Mg0.875 Co0.125S alloys.
  • 715: Volume of the Physica B-condensed Matter journal issue where the research was published.

Sources:

  • Physica B-condensed Matter, 2025;715.
  • NewsRx. Findings from Princess Nourah Bint Abdulrahman University in Electronics Reported (Modified Becke-johnson Potential Calculations of Co-substituted Mgs Alloys for Spintronic and Optoelectronic Applications). Electronics Newsweekly. October 21, 2025; p 806.

Read more