کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1560847 | 1513928 | 2014 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Nitrogen-vacancy induced intrinsic ferromagnetism and half-metallicity in BN Nitrogen-vacancy induced intrinsic ferromagnetism and half-metallicity in BN](/preview/png/1560847.png)
• Nitrogen vacancies can promote the formation of local magnetic moments.
• The magnetic coupling between these intrinsic defects induced moments is long-ranged.
• A neutral N vacancy brings a spin polarized state with a magnetic moment of 1μB.
• The magnetic moment mainly comes from the spin polarized B atoms around the N vacancies.
• The defective BN system containing N vacancies shows a half-metallic character.
Using the first-principles method based on density functional theory, we investigated the electronic structure, magnetic properties and the formation energy of N vacancies-doped in BN. The results indicate that nitrogen vacancies can promote the formation of local magnetic moments and the magnetic coupling between these intrinsic defects induced moments is long-ranged. A neutral N vacancy brings a spin polarized state with a magnetic moment of 1μB, and the magnetic moment mainly comes from the spin polarized B atoms around the N vacancies. In addition, it also was found that the defective BN system containing N vacancies shows a half-metallic character.
Journal: Computational Materials Science - Volume 81, January 2014, Pages 212–215