dc.contributor.author | Kahwaji, S. | en_US |
dc.contributor.author | Gordon, R. A. | en_US |
dc.contributor.author | Crozier, E. D. | en_US |
dc.contributor.author | Monchesky, T. L. | en_US |
dc.date.accessioned | 2013-06-19T17:21:14Z | |
dc.date.available | 2013-06-19T17:21:14Z | |
dc.date.issued | 2012-01/01 | en_US |
dc.identifier.citation | Kahwaji, S., R. A. Gordon, E. D. Crozier, and T. L. Monchesky. 2012. "Local structure and magnetic properties of B2- and B20-like ultrathin Mn films grown on Si(001)." Physical Review B (Condensed Matter and Materials Physics) 85(1): 0144059. doi:10.1103/PhysRevB.85.014405 | en_US |
dc.identifier.issn | 1098-0121 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1103/PhysRevB.85.014405 | en_US |
dc.identifier.uri | http://hdl.handle.net/10222/24553 | |
dc.description.abstract | The structural and magnetic properties of ultrathin Mn layers deposited onto Si(001) by molecular beam epitaxy at low temperature are reported. X-ray absorption fine structure studies reveal that the structure of the silicide layer that forms depends on the growth temperature of the capping layer. A capping layer grown at 200C on 0.35-monolayer (ML) Mn results in a metastable MnSi phase with a B2-like (CsCl) structure, whereas a cap grown at room temperature on 0.5 ML followed by annealing at 200C produces a lower coordinated MnSi phase with a B20-like structure. Increasing the Mn thickness from 0.5 to 4 monolayers does not trigger a structural transformation but drives the structure closer to MnSi-B20. The sample with B2-like structure has the largest Mn magnetic moment of 0.33 B/Mn at T= 2 K, and a Curie temperature TC above 250 K. MnSi-B20 layers showed lower moments and much lower TC's, in line with those reported for MnSi-B20 thin films. | en_US |
dc.publisher | American Physical Society | en_US |
dc.relation.ispartof | Physical Review B (Condensed Matter and Materials Physics) | en_US |
dc.subject | Curie temperature | en_US |
dc.subject | Magnetic annealing | en_US |
dc.subject | Magnetic epitaxial layers | en_US |
dc.subject | Magnetic moments | en_US |
dc.subject | Magnetic structure | en_US |
dc.subject | Manganese | en_US |
dc.subject | Metallic epitaxial layers | en_US |
dc.subject | Molecular beam epitaxial growth | en_US |
dc.subject | Monolayers | en_US |
dc.subject | Solid-state phase transformations | en_US |
dc.subject | X-ray absorption | en_US |
dc.title | Local structure and magnetic properties of B2- and B20-like ultrathin Mn films grown on Si(001) | en_US |
dc.type | article | en_US |
dc.identifier.volume | 85 | en_US |
dc.identifier.issue | 1 | en_US |
dc.identifier.startpage | 0144059 | en_US |
dc.rights.holder | ©2012 American Physical Society | |