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Relevant, systematic variation of morphology and magnetism according to annealing in InMnP : Zn
- Authors
- Shon, Yoon; Lee, Seungwoong; Park, Chang-soo; Lee, Sejoon; Jeon, Hee Change; Kim, Deukyoung; Kang, Taewon Wang; Yoon, Chong Seung; Kim, Eun Kyu; Lee, Jeoung Ju
- Issue Date
- Sep-2007
- Publisher
- Elsevier BV
- Keywords
- MOCVD; MBE; InMnP : Zn epilayer; morphology; auger electron spectroscopy; hysteresis loop
- Citation
- Applied Surface Science, v.254, no.2, pp 494 - 498
- Pages
- 5
- Indexed
- SCIE
SCOPUS
- Journal Title
- Applied Surface Science
- Volume
- 254
- Number
- 2
- Start Page
- 494
- End Page
- 498
- ISSN
- 0169-4332
1873-5584
- Abstract
- 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 InMn3 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 InMn3 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.
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Related Researcher
- Yoon, Chong Seung
- COLLEGE OF ENGINEERING (SCHOOL OF MATERIALS SCIENCE AND ENGINEERING)