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| DC Field | Value | Language |
|---|---|---|
| dc.contributor.author | Panagiotopoulos, I. | en |
| dc.contributor.author | Stavroyiannis, S. | en |
| dc.contributor.author | Niarchos, D. | en |
| dc.contributor.author | Christodoulides, J. A. | en |
| dc.contributor.author | Hadjipanayis, G. C. | en |
| dc.date.accessioned | 2015-11-24T17:34:38Z | - |
| dc.date.available | 2015-11-24T17:34:38Z | - |
| dc.identifier.issn | 0021-8979 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/14004 | - |
| dc.rights | Default Licence | - |
| dc.subject | thin-films | en |
| dc.subject | coercivity | en |
| dc.title | Granular CoPt/C films for high-density recording media | en |
| heal.type | journalArticle | - |
| heal.type.en | Journal article | en |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.identifier.primary | Doi 10.1063/1.373078 | - |
| heal.identifier.secondary | <Go to ISI>://000086724100051 | - |
| heal.language | en | - |
| heal.access | campus | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικών | el |
| heal.publicationDate | 2000 | - |
| heal.abstract | Granular CoPt/C films, consisting of nanoparticles of the face-centered-tetragonal (fct) CoPt phase embedded in a carbon matrix, have been made by cosputtering from CoPt and C targets using a tandem deposition mode. The as-made films have a disordered face-centered-cubic structure and low coercivity (below 100 Oe). The granular structure is obtained after an aging heat treatment, which is followed by a drastic increase in coercivity to values up to 9 kOe due to the formation of the highly anisotropic fct phase. Transmission electron microscope studies showed the size of the CoPt particles to increase from 5 nm in the as-made state to 7-12 nm in the optimally annealed state. The measured coercivities are much lower than the value expected for noninteracting, randomly distributed single-domain particles. The large discrepancy is attributed to interparticle interactions, particle-size effects, and mainly to a lower anisotropy of the fct phase because of incomplete ordering. (C) 2000 American Institute of Physics. [S0021- 8979(00)00909-9]. | en |
| heal.publisher | American Institute of Physics | en |
| heal.journalName | Journal of Applied Physics | en |
| heal.journalType | peer reviewed | - |
| heal.fullTextAvailability | TRUE | - |
| Appears in Collections: | Άρθρα σε επιστημονικά περιοδικά ( Ανοικτά) | |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Panagiotopoulos-2000-Gra.pdf | 464.13 kB | Adobe PDF | View/Open Request a copy |
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