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Enhanced Ferromagnetic Interaction in Modulation-Doped GaMnN Nanorods
- Source :
- Nanoscale Research Letters, Vol 12, Iss 1, Pp 1-9 (2017)
- Publication Year :
- 2017
- Publisher :
- SpringerOpen, 2017.
-
Abstract
- Abstract In this report, ferromagnetic interactions in modulation-doped GaMnN nanorods grown on Si (111) substrate by plasma-assisted molecular beam epitaxy are investigated with the prospect of achieving a room temperature ferromagnetic semiconductor. Our results indicate the thickness of GaN layer in each GaN/MnN pair, as well as Mn-doping levels, are essential for suppressing secondary phases as well as enhancing the magnetic moment. For these optimized samples, structural analysis by high-resolution X-ray diffractometry and Raman spectroscopy verifies single-crystalline modulation-doped GaMnN nanorods with Ga sites substituted by Mn atoms. Energy dispersive X-ray spectrometry shows that the average Mn concentration can be raised from 0.4 to 1.8% by increasing Mn fluxes without formation of secondary phases resulted in a notable enhancement of the saturation magnetization as well as coercive force in these nanorods.
Details
- Language :
- English
- ISSN :
- 19317573 and 1556276X
- Volume :
- 12
- Issue :
- 1
- Database :
- Directory of Open Access Journals
- Journal :
- Nanoscale Research Letters
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.53df2a6b53f64160981e6dd87b61d856
- Document Type :
- article
- Full Text :
- https://doi.org/10.1186/s11671-017-2061-5