Magnetic properties of Fe0.9-qMn0.1Alq disordered alloys: Theory
ABSTRACT: By using the free-energy variational method based on the Bogoliubov inequality and a diluted and randombond Ising model with nearest-neighbors interactions, we investigate the magnetic phase diagram and some of the magnetic properties of the disordered Fe0.92qMn0.1Alq alloys system. Thus t...
- Autores:
-
Restrepo Cárdenas, Johans
Pérez Alcázar, Germán Antonio
- Tipo de recurso:
- Article of investigation
- Fecha de publicación:
- 2000
- Institución:
- Universidad de Antioquia
- Repositorio:
- Repositorio UdeA
- Idioma:
- eng
- OAI Identifier:
- oai:bibliotecadigital.udea.edu.co:10495/8932
- Acceso en línea:
- http://hdl.handle.net/10495/8932
- Palabra clave:
- Aleaciones
Alloys
Propiedades magnéticas
Magnetics properties
Energía libre
- Rights
- openAccess
- License
- Atribución-NoComercial-SinDerivadas 2.5 Colombia
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Magnetic properties of Fe0.9-qMn0.1Alq disordered alloys: Theory |
| title |
Magnetic properties of Fe0.9-qMn0.1Alq disordered alloys: Theory |
| spellingShingle |
Magnetic properties of Fe0.9-qMn0.1Alq disordered alloys: Theory Aleaciones Alloys Propiedades magnéticas Magnetics properties Energía libre |
| title_short |
Magnetic properties of Fe0.9-qMn0.1Alq disordered alloys: Theory |
| title_full |
Magnetic properties of Fe0.9-qMn0.1Alq disordered alloys: Theory |
| title_fullStr |
Magnetic properties of Fe0.9-qMn0.1Alq disordered alloys: Theory |
| title_full_unstemmed |
Magnetic properties of Fe0.9-qMn0.1Alq disordered alloys: Theory |
| title_sort |
Magnetic properties of Fe0.9-qMn0.1Alq disordered alloys: Theory |
| dc.creator.fl_str_mv |
Restrepo Cárdenas, Johans Pérez Alcázar, Germán Antonio |
| dc.contributor.author.none.fl_str_mv |
Restrepo Cárdenas, Johans Pérez Alcázar, Germán Antonio |
| dc.subject.lemb.none.fl_str_mv |
Aleaciones Alloys Propiedades magnéticas Magnetics properties |
| topic |
Aleaciones Alloys Propiedades magnéticas Magnetics properties Energía libre |
| dc.subject.proposal.spa.fl_str_mv |
Energía libre |
| description |
ABSTRACT: By using the free-energy variational method based on the Bogoliubov inequality and a diluted and randombond Ising model with nearest-neighbors interactions, we investigate the magnetic phase diagram and some of the magnetic properties of the disordered Fe0.92qMn0.1Alq alloys system. Thus the mean magnetization per site, and hence the average hyperfine magnetic field, are computed. The so-obtained results are compared with room-temperature experimental data obtained by 57Fe Mo¨ssbauer spectroscopy and vibrating sample magnetometry, from which a very good agreement is achieved. Here, the occurrence of a ‘‘critical concentration’’ at 40.0 at.% Al, for which the system passes from a ferromagnetically ordered state to a paramagnetic one, is evidenced. The model allows obtaining an estimate of the exchange energy between Fe-Fe pairs. How this energy depends on the Al concentration and the role of the manganese atoms is also presented and discussed. |
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2000 |
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2000 |
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2018-01-25T20:06:31Z |
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2018-01-25T20:06:31Z |
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info:eu-repo/semantics/article |
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Artículo de investigación |
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http://purl.org/coar/resource_type/c_2df8fbb1 |
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publishedVersion |
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Restrepo Cárdenas, J., & Pérez Alcázar, G. A. (2000). Magnetic properties of Fe0.9-qMn0.1Alq disordered alloys: Theory. Physical Review B (Condensed Matter). 61(9), 5880-5883. |
| dc.identifier.issn.none.fl_str_mv |
0163-1829 |
| dc.identifier.uri.none.fl_str_mv |
http://hdl.handle.net/10495/8932 |
| dc.identifier.eissn.none.fl_str_mv |
2469-9969 |
| identifier_str_mv |
Restrepo Cárdenas, J., & Pérez Alcázar, G. A. (2000). Magnetic properties of Fe0.9-qMn0.1Alq disordered alloys: Theory. Physical Review B (Condensed Matter). 61(9), 5880-5883. 0163-1829 2469-9969 |
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http://hdl.handle.net/10495/8932 |
| dc.language.iso.spa.fl_str_mv |
eng |
| language |
eng |
| dc.relation.ispartofjournalabbrev.spa.fl_str_mv |
Phys Rev B |
| dc.rights.*.fl_str_mv |
Atribución-NoComercial-SinDerivadas 2.5 Colombia |
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info:eu-repo/semantics/openAccess |
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http://creativecommons.org/licenses/by-nc-nd/2.5/co/ |
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https://creativecommons.org/licenses/by-nc-nd/4.0/ |
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Atribución-NoComercial-SinDerivadas 2.5 Colombia http://creativecommons.org/licenses/by-nc-nd/2.5/co/ http://purl.org/coar/access_right/c_abf2 https://creativecommons.org/licenses/by-nc-nd/4.0/ |
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openAccess |
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application/pdf |
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American Physical Society |
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Grupo de Magnetismo y Simulación |
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Estados Unidos |
| institution |
Universidad de Antioquia |
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Restrepo Cárdenas, JohansPérez Alcázar, Germán Antonio2018-01-25T20:06:31Z2018-01-25T20:06:31Z2000Restrepo Cárdenas, J., & Pérez Alcázar, G. A. (2000). Magnetic properties of Fe0.9-qMn0.1Alq disordered alloys: Theory. Physical Review B (Condensed Matter). 61(9), 5880-5883.0163-1829http://hdl.handle.net/10495/89322469-9969ABSTRACT: By using the free-energy variational method based on the Bogoliubov inequality and a diluted and randombond Ising model with nearest-neighbors interactions, we investigate the magnetic phase diagram and some of the magnetic properties of the disordered Fe0.92qMn0.1Alq alloys system. Thus the mean magnetization per site, and hence the average hyperfine magnetic field, are computed. The so-obtained results are compared with room-temperature experimental data obtained by 57Fe Mo¨ssbauer spectroscopy and vibrating sample magnetometry, from which a very good agreement is achieved. Here, the occurrence of a ‘‘critical concentration’’ at 40.0 at.% Al, for which the system passes from a ferromagnetically ordered state to a paramagnetic one, is evidenced. The model allows obtaining an estimate of the exchange energy between Fe-Fe pairs. How this energy depends on the Al concentration and the role of the manganese atoms is also presented and discussed.application/pdfengAmerican Physical SocietyGrupo de Magnetismo y SimulaciónEstados Unidosinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_2df8fbb1https://purl.org/redcol/resource_type/ARTArtículo de investigaciónhttp://purl.org/coar/version/c_970fb48d4fbd8a85Atribución-NoComercial-SinDerivadas 2.5 Colombiainfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/2.5/co/http://purl.org/coar/access_right/c_abf2https://creativecommons.org/licenses/by-nc-nd/4.0/Magnetic properties of Fe0.9-qMn0.1Alq disordered alloys: TheoryAleacionesAlloysPropiedades magnéticasMagnetics propertiesEnergía librePhys Rev BPhysical Review B: Condensed Matter58805883619LICENSElicense.txtlicense.txtArtículo de investigacióntext/plain; charset=utf-81748https://bibliotecadigital.udea.edu.co/bitstream/10495/8932/5/license.txt8a4605be74aa9ea9d79846c1fba20a33MD55ORIGINALRestrepoJohans_2000_MagneticPropertiesDisordered.pdfRestrepoJohans_2000_MagneticPropertiesDisordered.pdfArtículo de investigaciónapplication/pdf67763https://bibliotecadigital.udea.edu.co/bitstream/10495/8932/1/RestrepoJohans_2000_MagneticPropertiesDisordered.pdfbcdac67726653ddbaeeb5a735dd505daMD51CC-LICENSElicense_urllicense_urltext/plain; charset=utf-849https://bibliotecadigital.udea.edu.co/bitstream/10495/8932/2/license_url4afdbb8c545fd630ea7db775da747b2fMD52license_textlicense_texttext/html; charset=utf-80https://bibliotecadigital.udea.edu.co/bitstream/10495/8932/3/license_textd41d8cd98f00b204e9800998ecf8427eMD53license_rdflicense_rdfapplication/rdf+xml; charset=utf-80https://bibliotecadigital.udea.edu.co/bitstream/10495/8932/4/license_rdfd41d8cd98f00b204e9800998ecf8427eMD5410495/8932oai:bibliotecadigital.udea.edu.co:10495/89322023-04-26 15:56:04.924Repositorio Institucional Universidad de Antioquiaandres.perez@udea.edu.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 |