Relevant, systematic variation of morphology and magnetism according to annealing in InMnP:Zn
| Autor: | Yoon Shon, Seung-Woong Lee, ChanKyoung Park, T. W. Kang, D. Y. Kim, Sejoon Lee, Chong Seung Yoon, Euikwoun Kim, H.C. Jeon, Jeoung Ju Lee |
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| Rok vydání: | 2007 |
| Předmět: |
Auger electron spectroscopy
Materials science Annealing (metallurgy) Magnetism Doping Analytical chemistry General Physics and Astronomy Mineralogy Surfaces and Interfaces General Chemistry Condensed Matter Physics Surfaces Coatings and Films Hysteresis Ferromagnetism Curie temperature Molecular beam epitaxy |
| Zdroj: | Applied Surface Science. 254:494-498 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2007.06.020 |
| Popis: | InMnP:Zn epilayers doped with Mn (0.290 at.%) were annealed at 723–873 K for 60 s and 473–573 K for 30 min. Using Auger electron spectroscopy, the changes in concentration profiles of the epilayers correlated to the ferromagnetic origin as a function of the annealing conditions. The epilayers annealed at 723–873 K for 60 s exhibited InMn 3 persisting up to 583 K. For InMnP:Zn epilayers annealed at 523–573 K for 30 min, the concentration depth profiles remained flat so that the stoichiometry was well maintained without precipitates such as InMn 3 and MnP comparable to the as-grown InP:Zn before doping Mn. These samples showed clear ferromagnetic hysteresis loops. Curie temperature was about 150 K. A ferromagnetic hysteresis loop was obtained even at very lower annealing temperature of 473 K. |
| Databáze: | OpenAIRE |
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