Estudio experimental de aleaciones ternarias semimagnéticas de (III-V) (Mn, Cr).

ilustraciones

Autores:: Doria Andrade, Jose Gregorio

Tipo de recurso:: Doctoral thesis

Fecha de publicación:: 2021

Institución:: Universidad Nacional de Colombia

Repositorio:: Universidad Nacional de Colombia

Idioma:: spa

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dc.title.spa.fl_str_mv	Estudio experimental de aleaciones ternarias semimagnéticas de (III-V) (Mn, Cr).
dc.title.translated.eng.fl_str_mv	Experimental study of ternary alloys semi-magnetic of (III-V) (Mn, Cr).
title	Estudio experimental de aleaciones ternarias semimagnéticas de (III-V) (Mn, Cr).
spellingShingle	Estudio experimental de aleaciones ternarias semimagnéticas de (III-V) (Mn, Cr). 530 - Física Semiconductores Materiales termoeléctricos III-V Semiconductores Magnetrón Sputtering Aleaciones ternarias III-V Semiconductors Magnetron Sputtering Ternary Alloys
title_short	Estudio experimental de aleaciones ternarias semimagnéticas de (III-V) (Mn, Cr).
title_full	Estudio experimental de aleaciones ternarias semimagnéticas de (III-V) (Mn, Cr).
title_fullStr	Estudio experimental de aleaciones ternarias semimagnéticas de (III-V) (Mn, Cr).
title_full_unstemmed	Estudio experimental de aleaciones ternarias semimagnéticas de (III-V) (Mn, Cr).
title_sort	Estudio experimental de aleaciones ternarias semimagnéticas de (III-V) (Mn, Cr).
dc.creator.fl_str_mv	Doria Andrade, Jose Gregorio
dc.contributor.advisor.none.fl_str_mv	Pulzara Mora, Alvaro
dc.contributor.author.none.fl_str_mv	Doria Andrade, Jose Gregorio
dc.contributor.researchgroup.spa.fl_str_mv	Materiales Cerámicos y Vítreos Magnetismo y Materiales Avanzados
dc.subject.ddc.spa.fl_str_mv	530 - Física
topic	530 - Física Semiconductores Materiales termoeléctricos III-V Semiconductores Magnetrón Sputtering Aleaciones ternarias III-V Semiconductors Magnetron Sputtering Ternary Alloys
dc.subject.lemb.none.fl_str_mv	Semiconductores Materiales termoeléctricos
dc.subject.proposal.spa.fl_str_mv	III-V Semiconductores Magnetrón Sputtering Aleaciones ternarias
dc.subject.proposal.eng.fl_str_mv	III-V Semiconductors Magnetron Sputtering Ternary Alloys
description	ilustraciones
publishDate	2021
dc.date.accessioned.none.fl_str_mv	2021-06-24T15:55:25Z
dc.date.available.none.fl_str_mv	2021-06-24T15:55:25Z
dc.date.issued.none.fl_str_mv	2021-06-22
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
status_str	acceptedVersion
dc.identifier.uri.none.fl_str_mv	https://repositorio.unal.edu.co/handle/unal/79705
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/79705 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
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dc.format.extent.spa.fl_str_mv	174 páginas
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dc.publisher.spa.fl_str_mv	Universidad Nacional de Colombia
dc.publisher.program.spa.fl_str_mv	Medellín - Ciencias - Doctorado en Ciencias - Física
dc.publisher.department.spa.fl_str_mv	Escuela de física
dc.publisher.faculty.spa.fl_str_mv	Facultad de Ciencias
dc.publisher.place.spa.fl_str_mv	Medellín
dc.publisher.branch.spa.fl_str_mv	Universidad Nacional de Colombia - Sede Medellín
institution	Universidad Nacional de Colombia
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spelling	Atribución-NoComercial-SinDerivadas 4.0 Internacionalhttp://creativecommons.org/licenses/by-nd/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Pulzara Mora, Alvaro67b9a8430ddf9671229e9a454d3f8c4b600Doria Andrade, Jose Gregoriod9587b2a0668f83c2a37a0cb461ef0ba600Materiales Cerámicos y VítreosMagnetismo y Materiales Avanzados2021-06-24T15:55:25Z2021-06-24T15:55:25Z2021-06-22https://repositorio.unal.edu.co/handle/unal/79705Universidad Nacional de ColombiaRepositorio Institucional Universidad Nacional de Colombiahttps://repositorio.unal.edu.co/ilustracionesDurante más de dos décadas, el estudio de las impurezas magnéticas en semiconductores ha recibido una gran atención. El interés en estos compuestos es impulsado en parte por el deseo de utilizar el spin del electrón en la electrónica, un campo de rápida expansión en la que hoy conocemos como la espintrónica. El descubrimiento del ferromagnetismo en el grupo III-V dopados con metales de transición como Mn, Fe y Cr es de gran interés en la investigación de semiconductores magnéticos, abrió un campo de investigación de mucho interés para aplicaciones tecnológicas. La ventaja de III (Mn, Cr) V es que los efectos magnéticos, ópticos y electrónicos están todos interconectados. Además, todas estas propiedades son sensibles a los estímulos externos y pueden modificarse fácilmente mediante la aplicación de un campo eléctrico o magnético externo y también mediante radiación. Es por eso, que en el presente trabajo de tesis nos enfocamos en mostrar resultados experimentales de aleaciones semiconductoras III-V, específicamente películas delgadas de: GaCrAs, GaMnAs, y GaMnSb obtenidas por la técnica de evaporación catódica asistida por campo magnético o magnetrón sputtering. Esta técnica de preparación de películas delgadas permite controlar variables físicas involucradas en los procesos (tiempo, presión, temperatura y atmósfera), lo que hace que se convierta en una técnica ideal para obtener películas delgadas semiconductoras. Con el fin de aprovechar esta versatilidad de la técnica de preparación, recolectamos información de las propiedades físicas de cada una de las muestras obtenidas, utilizando: difracción de rayos X (DRX), microscopía Raman, microscopía electrónica de barrido (SEM), microscopía de fuerza atómica (AFM), espectroscopia de masas de iones secundarios (SIMS) y magnetometría de muestra vibrante (VSM). Lo anterior permitió corroborar la obtención del semiconductor de interés y además correlacionar las propiedades ópticas, estructurales y magnéticas en función de algunas de las variables experimentales, resultados que coinciden con los reportados en la literatura. (Tomado de la fuente)For more than two decades, the study of magnetic impurities in semiconductors has received great attention. Interest in these compounds is driven in part by the desire to use the spin of the electron in electronics, a rapidly expanding field from what it is now known as spintronics. The discovery of ferromagnetism in group III-V doped with transition metals such as Mn, Fe and Cr is of great interest in magnetic semiconductor research, it opened a field of research which appears to be appealing for technological applications. The advantage of III (Mn, Cr) V is that the magnetic, optical and electronic effects are all interconnected. Furthermore, all these properties are sensitive to external stimuli and can be easily modified by applying an external electric or magnetic field and also by radiation. That is why, in this thesis work we focus on showing experimental results of III-V semiconductor alloys, specifically layers of: GaCrAs, GaMnAs, and GaSbAs obtained by the cathodic evaporation technique assisted by magnetic field or magnetron sputtering. This technique for preparing thin layers allows controlling physical variables involved in the processes (time, pressure, temperature and atmosphere), which makes it an ideal technique to obtain semiconductor layers. In order to take advantage of this versatility of the preparation technique, we collected information on the physical properties of each of the samples obtained, using: X-ray diffraction (XRD), Raman microscopy, scanning electron microscopy (SEM), Atomic Force Microscopy (AFM), Secondary Ion Mass Spectroscopy (SIMS), and Vibrating Sample Magnetometry (VSM). This allowed corroborating the obtaining of the semiconductor of interest and also correlating the optical, structural and magnetic properties based on some of the experimental variables, results that coincide with those reported in the literature. (Tomado de la fuente)DoctoradoDoctor en Ciencias -FísicaMateriales semiconductores Nanoestructurados174 páginasapplication/pdfspaUniversidad Nacional de ColombiaMedellín - Ciencias - Doctorado en Ciencias - FísicaEscuela de físicaFacultad de CienciasMedellínUniversidad Nacional de Colombia - Sede Medellín530 - FísicaSemiconductoresMateriales termoeléctricosIII-V SemiconductoresMagnetrón SputteringAleaciones ternariasIII-V SemiconductorsMagnetron SputteringTernary AlloysEstudio experimental de aleaciones ternarias semimagnéticas de (III-V) (Mn, Cr).Experimental study of ternary alloys semi-magnetic of (III-V) (Mn, Cr).Trabajo 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] D.C. Cronemeyer, Perpendicular Anisotropy in, 18 (2009) 85–89. https://doi.org/10.1063/1.3141747.[2] S.A. 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Estudio experimental de aleaciones ternarias semimagnéticas de (III-V) (Mn, Cr).

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