Magnetism in Gallium Nitride Nanosheets

  • Author: Jenna Pope
  • Published: 16 March 2016
  • Copyright: Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
  • Source / Publisher: International Journal of Quantum Chemistry/John Wiley & Sons
thumbnail image: Magnetism in Gallium Nitride Nanosheets

Gallium nitride (GaN) is a two-dimensional semiconducting nanomaterial, similar to graphene, that has applications in optoelectronics as well as high-temperature and high-power devices, and is ideal for producing blue and ultraviolet LEDs. Pristine GaN is not magnetic; however, doping GaN with transition metals can induce magnetic properties.


Guo-Xiang Chen, Xi’an Shiyou University, Shaanxi, China, and colleagues used density functional theory (DFT) calculations to study the magnetic properties of GaN doped with a variety of transition metals (Cr, Mn, Fe, Co, and Ni). The researchers found that transition metals did indeed induce magnetic properties in doped GaN. While the magnetization came primarily from the transition metal d-electrons, the p-electrons of nitrogen also played a role in inducing magnetism. The transition metal atoms hybridized with neighboring nitrogen atoms, which enhanced charge transfer between the transition metal atoms and the GaN nanosheet.


Of the transition metals studied, manganese and nickel showed 100% spin polarization, making them good candidates for dopants in diluted magnetic semiconductors (DMSs) for spintronic applications.


 

Article Views: 2497

Sign in Area

Please sign in below

Additional Sign In options

Please note that to comment on an article you must be registered and logged in.
Registration is for free, you may already be registered to receive, e.g., the newsletter. When you register on this website, please ensure you view our terms and conditions. All comments are subject to moderation.

Article Comments - To add a comment please sign in

If you would like to reuse any content, in print or online, from ChemistryViews.org, please contact us first for permission. more

Follow on Facebook Follow on Twitter Follow on LinkedIn Follow on Instagram RSS Sign up for newsletters

Magazine of Chemistry Europe (16 European Chemical Societies) published by Wiley-VCH