Structural and magnetic properties of rhombohedral Sm-2(Co,Fe,Cr)(17)B-x and Sm-2(Co,Fe,Mn)(17)B-x compounds
| dc.contributor.author | Makridis, S. S. | en |
| dc.contributor.author | Litsardakis, G. | en |
| dc.contributor.author | Efthimiadis, K. G. | en |
| dc.contributor.author | Pavlidou, E. | en |
| dc.contributor.author | Panagiotopoulos, I. | en |
| dc.contributor.author | Hadjipanayis, G. C. | en |
| dc.contributor.author | Niarchos, D. | en |
| dc.date.accessioned | 2015-11-24T17:38:37Z | |
| dc.date.available | 2015-11-24T17:38:37Z | |
| dc.identifier.issn | 0018-9464 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/14522 | |
| dc.rights | Default Licence | - |
| dc.subject | hard magnetic materials | en |
| dc.subject | permanent magnets | en |
| dc.subject | rare-earth metals and compounds | en |
| dc.title | Structural and magnetic properties of rhombohedral Sm-2(Co,Fe,Cr)(17)B-x and Sm-2(Co,Fe,Mn)(17)B-x compounds | en |
| heal.abstract | Single-phase rhombohedral Sm-2(CobalFe0.2My)(17) B-x with M = Cr or Mn substituting for Co have been prepared and the influence of transition metals on crystal structure, anisotropy field, and Curie temperature, is examined. Sm2Co17 as-cast bulk sample has the 2: 17 hexagonal structure (type Th2Ni17), while boron addition stabilizes the 2: 17 rhombohedral structure (type Th2Zn17). Anisotropy field for Cr-doped as-cast sample is 74 kOe. Secondary phases of fcc-Co or Fe-Co are observed in some cases. A Cr-doped sample with y = 0.1 after annealing at 1190 degreesC for 26 h is single phase. Curie temperatures of as-cast samples vary from similar to849 degreesC to similar to687 degreesC depending on the composition. Mechanical alloying and melt spinning were used to develop coercivity. As-spun ribbons at 53 m/s with Cr present a nanocomposite structure with H-c = 5.2 kOe. Samples with Mn have a coercive field close to 0.4 kOe. Scanning electron microscopy studies-show different microstructure for Mn and Cr substituted ribbon samples. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | Doi 10.1109/Tmag.2003.815732 | - |
| heal.identifier.secondary | <Go to ISI>://000185722100214 | - |
| heal.journalName | Ieee Transactions on Magnetics | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2003 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικών | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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