Estudio de las propiedades físicas de sistemas multicapas basados en GaMnSb para aplicaciones en espintrónica
ilustraciones, graficas
- Autores:
-
Calderón Cómbita, Jorge Arturo
- Tipo de recurso:
- Doctoral thesis
- Fecha de publicación:
- 2021
- Institución:
- Universidad Nacional de Colombia
- Repositorio:
- Universidad Nacional de Colombia
- Idioma:
- spa
- OAI Identifier:
- oai:repositorio.unal.edu.co:unal/81348
- Palabra clave:
- 530 - Física::537 - Electricidad y electrónica
530 - Física::538 - Magnetismo
530 - Física::539 - Física moderna
ESPINTRONICA
Spintronics
DC Magnetron Sputtering
GaMnSb
M-RRAM
Multilayer Architectures
DMS
Exchange Bias
Resistive Commutation
Arquitecturas Multicapa
Pulverización Catódica asistida por campo magnético de corriente continua
GaMnSb
MM-RAA
Sesgo de Intercambio
SMD
Conmutación Resistiva
- Rights
- openAccess
- License
- Atribución-CompartirIgual 4.0 Internacional
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| dc.title.spa.fl_str_mv |
Estudio de las propiedades físicas de sistemas multicapas basados en GaMnSb para aplicaciones en espintrónica |
| dc.title.translated.eng.fl_str_mv |
Study of the physical properties of multilayer systems based on GaMnSb for applications in spintronics |
| title |
Estudio de las propiedades físicas de sistemas multicapas basados en GaMnSb para aplicaciones en espintrónica |
| spellingShingle |
Estudio de las propiedades físicas de sistemas multicapas basados en GaMnSb para aplicaciones en espintrónica 530 - Física::537 - Electricidad y electrónica 530 - Física::538 - Magnetismo 530 - Física::539 - Física moderna ESPINTRONICA Spintronics DC Magnetron Sputtering GaMnSb M-RRAM Multilayer Architectures DMS Exchange Bias Resistive Commutation Arquitecturas Multicapa Pulverización Catódica asistida por campo magnético de corriente continua GaMnSb MM-RAA Sesgo de Intercambio SMD Conmutación Resistiva |
| title_short |
Estudio de las propiedades físicas de sistemas multicapas basados en GaMnSb para aplicaciones en espintrónica |
| title_full |
Estudio de las propiedades físicas de sistemas multicapas basados en GaMnSb para aplicaciones en espintrónica |
| title_fullStr |
Estudio de las propiedades físicas de sistemas multicapas basados en GaMnSb para aplicaciones en espintrónica |
| title_full_unstemmed |
Estudio de las propiedades físicas de sistemas multicapas basados en GaMnSb para aplicaciones en espintrónica |
| title_sort |
Estudio de las propiedades físicas de sistemas multicapas basados en GaMnSb para aplicaciones en espintrónica |
| dc.creator.fl_str_mv |
Calderón Cómbita, Jorge Arturo |
| dc.contributor.advisor.none.fl_str_mv |
Dussán Cuenca, Anderson |
| dc.contributor.author.none.fl_str_mv |
Calderón Cómbita, Jorge Arturo |
| dc.contributor.researchgroup.spa.fl_str_mv |
Materiales Nanoestructurados y Sus Aplicaciones |
| dc.subject.ddc.spa.fl_str_mv |
530 - Física::537 - Electricidad y electrónica 530 - Física::538 - Magnetismo 530 - Física::539 - Física moderna |
| topic |
530 - Física::537 - Electricidad y electrónica 530 - Física::538 - Magnetismo 530 - Física::539 - Física moderna ESPINTRONICA Spintronics DC Magnetron Sputtering GaMnSb M-RRAM Multilayer Architectures DMS Exchange Bias Resistive Commutation Arquitecturas Multicapa Pulverización Catódica asistida por campo magnético de corriente continua GaMnSb MM-RAA Sesgo de Intercambio SMD Conmutación Resistiva |
| dc.subject.lemb.spa.fl_str_mv |
ESPINTRONICA |
| dc.subject.lemb.eng.fl_str_mv |
Spintronics |
| dc.subject.proposal.eng.fl_str_mv |
DC Magnetron Sputtering GaMnSb M-RRAM Multilayer Architectures DMS Exchange Bias Resistive Commutation |
| dc.subject.proposal.spa.fl_str_mv |
Arquitecturas Multicapa Pulverización Catódica asistida por campo magnético de corriente continua GaMnSb MM-RAA Sesgo de Intercambio SMD Conmutación Resistiva |
| description |
ilustraciones, graficas |
| publishDate |
2021 |
| dc.date.issued.none.fl_str_mv |
2021 |
| dc.date.accessioned.none.fl_str_mv |
2022-03-24T12:20:37Z |
| dc.date.available.none.fl_str_mv |
2022-03-24T12:20:37Z |
| dc.type.spa.fl_str_mv |
Trabajo de grado - Doctorado |
| dc.type.driver.spa.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
| dc.type.version.spa.fl_str_mv |
info:eu-repo/semantics/acceptedVersion |
| dc.type.coar.spa.fl_str_mv |
http://purl.org/coar/resource_type/c_db06 |
| dc.type.content.spa.fl_str_mv |
Text |
| dc.type.redcol.spa.fl_str_mv |
http://purl.org/redcol/resource_type/TD |
| format |
http://purl.org/coar/resource_type/c_db06 |
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acceptedVersion |
| dc.identifier.uri.none.fl_str_mv |
https://repositorio.unal.edu.co/handle/unal/81348 |
| dc.identifier.instname.spa.fl_str_mv |
Universidad Nacional de Colombia |
| dc.identifier.reponame.spa.fl_str_mv |
Repositorio Institucional Universidad Nacional de Colombia |
| dc.identifier.repourl.spa.fl_str_mv |
https://repositorio.unal.edu.co/ |
| url |
https://repositorio.unal.edu.co/handle/unal/81348 https://repositorio.unal.edu.co/ |
| identifier_str_mv |
Universidad Nacional de Colombia Repositorio Institucional Universidad Nacional de Colombia |
| dc.language.iso.spa.fl_str_mv |
spa |
| language |
spa |
| dc.relation.references.spa.fl_str_mv |
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Atribución-CompartirIgual 4.0 Internacionalhttp://creativecommons.org/licenses/by-sa/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Dussán Cuenca, Anderson393dbd423635d474564f566b8ee5f549Calderón Cómbita, Jorge Arturocf0804d5f93317f8eba6c3b4430c4decMateriales Nanoestructurados y Sus Aplicaciones2022-03-24T12:20:37Z2022-03-24T12:20:37Z2021https://repositorio.unal.edu.co/handle/unal/81348Universidad Nacional de ColombiaRepositorio Institucional Universidad Nacional de Colombiahttps://repositorio.unal.edu.co/ilustraciones, graficasEn este trabajo se fabricaron muestras de películas delgadas de GaSb y sistemas multicapas de [GaSb/Mn]_n por medio de la técnica de pulverización catódica asistida por Campo Magnético de corriente directa (“DC magnetron Sputtering”), para valores de n=1,3,6 y 12. Utilizando XRD, FTIR y Raman se estableció la presencia de fases de GaSb, Mn2Sb2, para las muestras depositadas a temperatura ambiente (300 K), junto con Mn3Ga para muestras con temperatura de sustrato de 423 K. A través de medidas de SEM, HR-SEM y AFM-MFM fue posible estudiar la formación granular en la superficie de las muestras. Se estableció que la formación de granos está descrita por el modelo de Burke para crecimiento anormal y no se tiene una correlación de la formación de dominios magnéticos en la superficie. Además, la constitución de las multicapas sigue el crecimiento columnar denso dado por el modelo MD. A partir de medidas espectroscopia de electrones Auger-Meitner y RBS fue posible estudiar los procesos de auto-difusión (D_Ga≈D_Sb~5,03×10^(-17) cm^2/s) y se propuso una solución para la segunda ley de Fick para sistemas multicapas obteniendo coeficientes de difusión de D_Mn~6,50×10^(-15) cm^2/s. Adicionalmente, el comportamiento magnético de las muestras fue estudiado utilizando un magnetrómetro SQUID y se evidenció la manifestación del fenómeno de sesgo de intercambio (“Exchange Bias”) correlacionado con la contribución ferromagnética de las fases Mn2Sb2, Mn3Ga y la contribución del comportamiento tipo ferromagnético del diluido GaSb:Mn, todas presentes en las regiones de interfaz para las muestras multicapas y la contribución antiferromagnética del Mn a 5 K; junto con la generación de histéresis a temperatura ambiente para sistemas de n=3 y n=6. A partir de medidas de I-V fue posible establecer la conmutación resistiva de las muestras, la cual se ve alterada bajo la presencia de un campo magnético externo, cuyo comportamiento fue explicado basándose en la conjunción de dos mecanismos de conducción dados por la presencia de regiones espaciales de carga y la formación de hilos de conducción manifestando su potencial uso como memorias M-RRAM. (Texto tomado de la fuente)In this work, thin film samples of GaSb and multilayer systems of [GaSb/Mn]_n were manufactured by DC magnetron Sputtering, for values of n = 1, 3, 6 and 12. Using XRD, FTIR and Raman, the presence of GaSb phases, Mn2Sb2, was established for the samples deposited at room temperature (300 K), together with Mn3Ga for samples with a substrate temperature of 423 K. SEM, HR-SEM and AFM-MFM measurements allowed to study the granular formation on the surface of the samples. The grain formation was described by the abnormal growth using the Burke model, and the magnetic responses is not correlated with the grains on the surface. Furthermore, the constitution of the multilayers follows the dense columnar growth given by MD model. From Auger-Meitner electron spectroscopy and RBS measurements it was possible to study the self-diffusion processes (D_Ga≈D_Sb~5,03×10^(-17) cm^2/s) and a solution was proposed for the second Fick's law for multilayer systems obtaining diffusion coefficients of D_Mn~6,50×10^(-15) cm^2/s. Additionally, the magnetic behavior of the samples was studied using a SQUID magnetrometer, and the Exchange Bias phenomenon was correlated with the ferromagnetic contribution of the Mn2Sb2, Mn3Ga phases and the contribution of the ferromagnetic-type behavior of the diluted GaSb: Mn, all present in the interface regions for the multilayer samples and the antiferromagnetic contribution of Mn at 5 K; together with the generation of hysteresis at room temperature for systems of n = 3 and n = 6. From I-V curves, it was possible to establish the resistive switching of the samples, which is altered under the presence of an external magnetic field, whose behavior was explained based on the conjunction of two conduction mechanisms given by the presence of spatial regions and the formation of conduction wires manifesting their potential use as M-RRAM memories.DoctoradoDoctor en Ciencias - FísicaBecas de Doctorados Nacionales convocatoria 785 de 2017Este trabajo corresponde a una investigación experimental.Fabricación de Dispositivos Nanoestructurados con Aplicaciones Tecnológicasxx, 234 páginasapplication/pdfspaUniversidad Nacional de ColombiaBogotá - Ciencias - Doctorado en Ciencias - FísicaDepartamento de FísicaFacultad de CienciasBogotá, ColombiaUniversidad Nacional de Colombia - Sede Bogotá530 - Física::537 - Electricidad y electrónica530 - Física::538 - Magnetismo530 - Física::539 - Física modernaESPINTRONICASpintronicsDC Magnetron SputteringGaMnSbM-RRAMMultilayer ArchitecturesDMSExchange BiasResistive CommutationArquitecturas MulticapaPulverización Catódica asistida por campo magnético de corriente continuaGaMnSbMM-RAASesgo de IntercambioSMDConmutación ResistivaEstudio de las propiedades físicas de sistemas multicapas basados en GaMnSb para aplicaciones en espintrónicaStudy of the physical properties of multilayer systems based on GaMnSb for applications in spintronicsTrabajo de grado - Doctoradoinfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_db06Texthttp://purl.org/redcol/resource_type/TD[1] J. 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