Energy product of cylindrical FePt@CoFe2 and FePt@Fe nanoparticles
We report a theoretical discussion of the impact the composition on the maximum energy product ((BH)max) of core@shell FePt@CoFe2 and FePt@Fe nanocylinders. We have found that the best composition is determined by the competing trends imposed by a strong ferromagnetic core@shell interface exchange e...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2019-12-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5129535 |
| _version_ | 1819093403087929344 |
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| author | R. M. Souza Y. S. M. Santos L. L. Oliveira M. S. Nunes Ana L. Dantas A. S. Carriço |
| author_facet | R. M. Souza Y. S. M. Santos L. L. Oliveira M. S. Nunes Ana L. Dantas A. S. Carriço |
| author_sort | R. M. Souza |
| collection | DOAJ |
| description | We report a theoretical discussion of the impact the composition on the maximum energy product ((BH)max) of core@shell FePt@CoFe2 and FePt@Fe nanocylinders. We have found that the best composition is determined by the competing trends imposed by a strong ferromagnetic core@shell interface exchange energy, and the core@shell dipolar interaction energy. The dipolar interaction has a negative impact on the nanocylinder (BH)max value, for shell thickness above a shell material dependent threshold value. We have also found that Fe is the best shell material owing to its much larger exchange stiffness. |
| first_indexed | 2024-12-21T23:10:57Z |
| format | Article |
| id | doaj.art-f333ff612e6040f8b25e967d41051fd3 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-21T23:10:57Z |
| publishDate | 2019-12-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-f333ff612e6040f8b25e967d41051fd32022-12-21T18:47:02ZengAIP Publishing LLCAIP Advances2158-32262019-12-01912125131125131-510.1063/1.5129535Energy product of cylindrical FePt@CoFe2 and FePt@Fe nanoparticlesR. M. Souza0Y. S. M. Santos1L. L. Oliveira2M. S. Nunes3Ana L. Dantas4A. S. Carriço5Departament of Theoretical and Experimental Physcis, UFRN, 59072-970 Natal, RN, BrazilDepartament of Science and Technology, UERN, 59104-200 Natal, RN, BrazilDepartament of Science and Technology, UERN, 59104-200 Natal, RN, BrazilDepartament of Physics, UERN, 59610-210 Mossoró, RN, BrazilDepartament of Science and Technology, UERN, 59104-200 Natal, RN, BrazilDepartament of Theoretical and Experimental Physcis, UFRN, 59072-970 Natal, RN, BrazilWe report a theoretical discussion of the impact the composition on the maximum energy product ((BH)max) of core@shell FePt@CoFe2 and FePt@Fe nanocylinders. We have found that the best composition is determined by the competing trends imposed by a strong ferromagnetic core@shell interface exchange energy, and the core@shell dipolar interaction energy. The dipolar interaction has a negative impact on the nanocylinder (BH)max value, for shell thickness above a shell material dependent threshold value. We have also found that Fe is the best shell material owing to its much larger exchange stiffness.http://dx.doi.org/10.1063/1.5129535 |
| spellingShingle | R. M. Souza Y. S. M. Santos L. L. Oliveira M. S. Nunes Ana L. Dantas A. S. Carriço Energy product of cylindrical FePt@CoFe2 and FePt@Fe nanoparticles AIP Advances |
| title | Energy product of cylindrical FePt@CoFe2 and FePt@Fe nanoparticles |
| title_full | Energy product of cylindrical FePt@CoFe2 and FePt@Fe nanoparticles |
| title_fullStr | Energy product of cylindrical FePt@CoFe2 and FePt@Fe nanoparticles |
| title_full_unstemmed | Energy product of cylindrical FePt@CoFe2 and FePt@Fe nanoparticles |
| title_short | Energy product of cylindrical FePt@CoFe2 and FePt@Fe nanoparticles |
| title_sort | energy product of cylindrical fept cofe2 and fept fe nanoparticles |
| url | http://dx.doi.org/10.1063/1.5129535 |
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