Ferromagnetism and Half-Metallicity in a High-Band-Gap Hexagonal Boron Nitride System

Indrani Choudhuri, Biswarup Pathak

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

Metal-free half-metallicity is the subject of intense research in the field of spintronics devices. Using density functional theoretical calculations, atom-thin hexagonal boron nitride (h-BN)-based systems are studied for possible spintronics applications. Ferromagnetism is observed in patterned C-doped h-BN systems. Interestingly, such a patterned C-doped h-BN exhibits half-metallicity with a Curie temperature of approximately 324 K at a particular C-doping concentration. It shows half-metallicity more than metal-free systems studied to date. Thus, such a BN-based system can be used to achieve a 100 % spin-polarised current at the Fermi level. Furthermore, this C-doped system shows excellent dynamical, thermal, and mechanical properties. Therefore, a stable metal-free planar ferromagnetic half-metallic h-BN-based system is proposed for use in room-temperature spintronics devices.

Original languageEnglish (US)
Pages (from-to)153-161
Number of pages9
JournalChemPhysChem
Volume19
Issue number1
DOIs
StatePublished - Jan 5 2018

Keywords

  • carbon doping
  • ferromagnetism
  • half-metallicity
  • hexagonal boron nitride
  • spintronics

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