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Magnetic assembles of FePt (001) nanoparticles with SiO2 addition
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| Zeitschriftentitel: | Journal of Applied Physics |
|---|---|
| Personen und Körperschaften: | |
| In: | Journal of Applied Physics, 105, 2009, 7 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
AIP Publishing
|
| Schlagwörter: |
| author_facet |
Wei, D. H. Wei, D. H. |
|---|---|
| author |
Wei, D. H. |
| spellingShingle |
Wei, D. H. Journal of Applied Physics Magnetic assembles of FePt (001) nanoparticles with SiO2 addition General Physics and Astronomy |
| author_sort |
wei, d. h. |
| spelling |
Wei, D. H. 0021-8979 1089-7550 AIP Publishing General Physics and Astronomy http://dx.doi.org/10.1063/1.3058690 <jats:p>Isolated FePt (001) nanoparticles surrounded with amorphous SiO2 have been fabricated by electron beam evaporation onto MgO (001) single-crystal substrates via the introduction of a SiO2 intermediate layer into the FePt film structures. The formation of two-dimensional magnetic assemblies of ordered FePt (001) nanoparticles with an average size of about 6nm was directly obtained with this process at only 400°C due to the interpenetration of SiO2, which has a lower surface energy. Studies of angular dependent coercivity show a tendency of a domain-wall motion to weaken toward rotation of reverse-domain type upon thickness of SiO2 additive layer into the FePt film structures. On the other hand, the exchange coupling between neighboring particles in the FePt nanostructures could be reduced with ultrathin SiO2 addition, which is confirmed from the Kelly–Henkel (δM) plot.</jats:p> Magnetic assembles of FePt (001) nanoparticles with SiO2 addition Journal of Applied Physics |
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AIP Publishing, 2009 |
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Journal of Applied Physics |
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| title |
Magnetic assembles of FePt (001) nanoparticles with SiO2 addition |
| title_unstemmed |
Magnetic assembles of FePt (001) nanoparticles with SiO2 addition |
| title_full |
Magnetic assembles of FePt (001) nanoparticles with SiO2 addition |
| title_fullStr |
Magnetic assembles of FePt (001) nanoparticles with SiO2 addition |
| title_full_unstemmed |
Magnetic assembles of FePt (001) nanoparticles with SiO2 addition |
| title_short |
Magnetic assembles of FePt (001) nanoparticles with SiO2 addition |
| title_sort |
magnetic assembles of fept (001) nanoparticles with sio2 addition |
| topic |
General Physics and Astronomy |
| url |
http://dx.doi.org/10.1063/1.3058690 |
| publishDate |
2009 |
| physical |
|
| description |
<jats:p>Isolated FePt (001) nanoparticles surrounded with amorphous SiO2 have been fabricated by electron beam evaporation onto MgO (001) single-crystal substrates via the introduction of a SiO2 intermediate layer into the FePt film structures. The formation of two-dimensional magnetic assemblies of ordered FePt (001) nanoparticles with an average size of about 6nm was directly obtained with this process at only 400°C due to the interpenetration of SiO2, which has a lower surface energy. Studies of angular dependent coercivity show a tendency of a domain-wall motion to weaken toward rotation of reverse-domain type upon thickness of SiO2 additive layer into the FePt film structures. On the other hand, the exchange coupling between neighboring particles in the FePt nanostructures could be reduced with ultrathin SiO2 addition, which is confirmed from the Kelly–Henkel (δM) plot.</jats:p> |
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| author | Wei, D. H. |
| author_facet | Wei, D. H., Wei, D. H. |
| author_sort | wei, d. h. |
| container_issue | 7 |
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| description | <jats:p>Isolated FePt (001) nanoparticles surrounded with amorphous SiO2 have been fabricated by electron beam evaporation onto MgO (001) single-crystal substrates via the introduction of a SiO2 intermediate layer into the FePt film structures. The formation of two-dimensional magnetic assemblies of ordered FePt (001) nanoparticles with an average size of about 6nm was directly obtained with this process at only 400°C due to the interpenetration of SiO2, which has a lower surface energy. Studies of angular dependent coercivity show a tendency of a domain-wall motion to weaken toward rotation of reverse-domain type upon thickness of SiO2 additive layer into the FePt film structures. On the other hand, the exchange coupling between neighboring particles in the FePt nanostructures could be reduced with ultrathin SiO2 addition, which is confirmed from the Kelly–Henkel (δM) plot.</jats:p> |
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| imprint | AIP Publishing, 2009 |
| imprint_str_mv | AIP Publishing, 2009 |
| institution | DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-D161 |
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| series | Journal of Applied Physics |
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| spelling | Wei, D. H. 0021-8979 1089-7550 AIP Publishing General Physics and Astronomy http://dx.doi.org/10.1063/1.3058690 <jats:p>Isolated FePt (001) nanoparticles surrounded with amorphous SiO2 have been fabricated by electron beam evaporation onto MgO (001) single-crystal substrates via the introduction of a SiO2 intermediate layer into the FePt film structures. The formation of two-dimensional magnetic assemblies of ordered FePt (001) nanoparticles with an average size of about 6nm was directly obtained with this process at only 400°C due to the interpenetration of SiO2, which has a lower surface energy. Studies of angular dependent coercivity show a tendency of a domain-wall motion to weaken toward rotation of reverse-domain type upon thickness of SiO2 additive layer into the FePt film structures. On the other hand, the exchange coupling between neighboring particles in the FePt nanostructures could be reduced with ultrathin SiO2 addition, which is confirmed from the Kelly–Henkel (δM) plot.</jats:p> Magnetic assembles of FePt (001) nanoparticles with SiO2 addition Journal of Applied Physics |
| spellingShingle | Wei, D. H., Journal of Applied Physics, Magnetic assembles of FePt (001) nanoparticles with SiO2 addition, General Physics and Astronomy |
| title | Magnetic assembles of FePt (001) nanoparticles with SiO2 addition |
| title_full | Magnetic assembles of FePt (001) nanoparticles with SiO2 addition |
| title_fullStr | Magnetic assembles of FePt (001) nanoparticles with SiO2 addition |
| title_full_unstemmed | Magnetic assembles of FePt (001) nanoparticles with SiO2 addition |
| title_short | Magnetic assembles of FePt (001) nanoparticles with SiO2 addition |
| title_sort | magnetic assembles of fept (001) nanoparticles with sio2 addition |
| title_unstemmed | Magnetic assembles of FePt (001) nanoparticles with SiO2 addition |
| topic | General Physics and Astronomy |
| url | http://dx.doi.org/10.1063/1.3058690 |