dorsal/arxiv
View SchemaGiant Magnetic Moments of Nitrogen Stabilized Mn Clusters and Their Relevance to Ferromagnetism in Mn Doped GaN
| Authors | B. K. Rao, P. Jena |
|---|---|
| Categories | |
| ArXiv ID | physics/0204064 |
| URL | https://arxiv.org/abs/physics/0204064 |
| DOI | 10.1103/PhysRevLett.89.185504 |
Abstract
Using first principles calculations based on density functional theory, we show that the stability and magnetic properties of small Mn clusters can be fundamentally altered by the presence of nitrogen. Not only are their binding energies substantially enhanced, but also the coupling between the magnetic moments at Mn sites remains ferromagnetic irrespective of their size or shape. In addition, these nitrogen stabilized Mn clusters carry giant magnetic moments ranging from 4 Bohr magnetons in MnN to 22 Bohr magnetons in Mn_5N. It is suggested that the giant magnetic moments of Mn_xN clusters may play a key role in the ferromagnetism of Mn doped GaN which exhibit a wide range (10K - 940K) of Curie temperatures.
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"abstract": "Using first principles calculations based on density functional theory, we\nshow that the stability and magnetic properties of small Mn clusters can be\nfundamentally altered by the presence of nitrogen. Not only are their binding\nenergies substantially enhanced, but also the coupling between the magnetic\nmoments at Mn sites remains ferromagnetic irrespective of their size or shape.\nIn addition, these nitrogen stabilized Mn clusters carry giant magnetic moments\nranging from 4 Bohr magnetons in MnN to 22 Bohr magnetons in Mn_5N. It is\nsuggested that the giant magnetic moments of Mn_xN clusters may play a key role\nin the ferromagnetism of Mn doped GaN which exhibit a wide range (10K - 940K)\nof Curie temperatures.",
"arxiv_id": "physics/0204064",
"authors": [
"B. K. Rao",
"P. Jena"
],
"categories": [
"physics.atm-clus"
],
"doi": "10.1103/PhysRevLett.89.185504",
"title": "Giant Magnetic Moments of Nitrogen Stabilized Mn Clusters and Their Relevance to Ferromagnetism in Mn Doped GaN",
"url": "https://arxiv.org/abs/physics/0204064"
},
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