Half-metallic character and electronic properties of inverse magnetoresistant Fe1-xCoxSi alloys

Based on ab initio calculations we find that Fe1-xCo xSi alloys in the Fe-rich region behave as a disordered ferromagnetic half metal. Half metallicity can explain the recently found electronic, magnetic, and transport properties. We can also determine a sharp transition from the paramagnetic metall...

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Detalles Bibliográficos
Autores principales: Guevara, J., Vildosola, V., Milano, J., Llois, A.M.
Formato: JOUR
Materias:
alloy
cobalt complex
iron
silicon
ab initio calculation
article
crystal
electric resistance
electron
electronics
energy
magnetic field
molecular interaction
semiconductor
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_01631829_v69_n18_p184422_Guevara
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_01631829_v69_n18_p184422_Guevara
record_format dspace
spelling todo:paper_01631829_v69_n18_p184422_Guevara2023-10-03T15:01:57Z Half-metallic character and electronic properties of inverse magnetoresistant Fe1-xCoxSi alloys Guevara, J. Vildosola, V. Milano, J. Llois, A.M. alloy cobalt complex iron silicon ab initio calculation article crystal electric resistance electron electronics energy magnetic field molecular interaction semiconductor Based on ab initio calculations we find that Fe1-xCo xSi alloys in the Fe-rich region behave as a disordered ferromagnetic half metal. Half metallicity can explain the recently found electronic, magnetic, and transport properties. We can also determine a sharp transition from the paramagnetic metallic behavior to the ferromagnetic half-metallic state as a function of Co concentration. At concentrations higher than 0.25 the system starts to segregate Co from Fe atoms, this giving rise to the disappearance of half metallicity and to reflect it in the decreasing value of the magnetic moment. Fil:Guevara, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Vildosola, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Milano, J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Llois, A.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01631829_v69_n18_p184422_Guevara
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic alloy
cobalt complex
iron
silicon
ab initio calculation
article
crystal
electric resistance
electron
electronics
energy
magnetic field
molecular interaction
semiconductor
spellingShingle alloy
cobalt complex
iron
silicon
ab initio calculation
article
crystal
electric resistance
electron
electronics
energy
magnetic field
molecular interaction
semiconductor
Guevara, J.
Vildosola, V.
Milano, J.
Llois, A.M.
Half-metallic character and electronic properties of inverse magnetoresistant Fe1-xCoxSi alloys
topic_facet alloy
cobalt complex
iron
silicon
ab initio calculation
article
crystal
electric resistance
electron
electronics
energy
magnetic field
molecular interaction
semiconductor
description Based on ab initio calculations we find that Fe1-xCo xSi alloys in the Fe-rich region behave as a disordered ferromagnetic half metal. Half metallicity can explain the recently found electronic, magnetic, and transport properties. We can also determine a sharp transition from the paramagnetic metallic behavior to the ferromagnetic half-metallic state as a function of Co concentration. At concentrations higher than 0.25 the system starts to segregate Co from Fe atoms, this giving rise to the disappearance of half metallicity and to reflect it in the decreasing value of the magnetic moment.
format JOUR
author Guevara, J.
Vildosola, V.
Milano, J.
Llois, A.M.
author_facet Guevara, J.
Vildosola, V.
Milano, J.
Llois, A.M.
author_sort Guevara, J.
title Half-metallic character and electronic properties of inverse magnetoresistant Fe1-xCoxSi alloys
title_short Half-metallic character and electronic properties of inverse magnetoresistant Fe1-xCoxSi alloys
title_full Half-metallic character and electronic properties of inverse magnetoresistant Fe1-xCoxSi alloys
title_fullStr Half-metallic character and electronic properties of inverse magnetoresistant Fe1-xCoxSi alloys
title_full_unstemmed Half-metallic character and electronic properties of inverse magnetoresistant Fe1-xCoxSi alloys
title_sort half-metallic character and electronic properties of inverse magnetoresistant fe1-xcoxsi alloys
url http://hdl.handle.net/20.500.12110/paper_01631829_v69_n18_p184422_Guevara
work_keys_str_mv AT guevaraj halfmetalliccharacterandelectronicpropertiesofinversemagnetoresistantfe1xcoxsialloys
AT vildosolav halfmetalliccharacterandelectronicpropertiesofinversemagnetoresistantfe1xcoxsialloys
AT milanoj halfmetalliccharacterandelectronicpropertiesofinversemagnetoresistantfe1xcoxsialloys
AT lloisam halfmetalliccharacterandelectronicpropertiesofinversemagnetoresistantfe1xcoxsialloys
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