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Comportamiento termomagnético de los sistemas ferro y ferrimagnético de espines S = 5/2 Y Q = 7/2

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dc.contributor.advisorEspriella Vélez, Nicolás de la
dc.contributor.authorPadilla Montiel, Fabio Anderson
dc.date.accessioned2021-07-16T22:01:24Z
dc.date.available2021-07-16T22:01:24Z
dc.date.issued2021-05-26
dc.description.abstractEl trabajo caracteriza termomagnéticamente un sistema ferrimagnético y otro ferromagnético de espines S = 5/2 y Q=7/2, en una con guración de red cuadrada, mediante un modelo de Ising mixto y a través del método computacional Monte Carlo. Se tienen en cuenta interacciones a primeros y segundos vecinos en la red, campos cristalino y magnético externo. Se encuentran fenómenos físicos interesantes tales como transiciones de fase discontinuas, temperaturas críticas y temperaturas de compensación, mediante el cálculo de diagramas de fase a temperatura fi nita de la magnetización, energía, calor específi co y susceptibilidad magnética.spa
dc.description.degreelevelMaestríaspa
dc.description.degreenameMagíster en Ciencias Físicasspa
dc.description.modalityTrabajo de Investigación y/o Extensiónspa
dc.description.tableofcontentsResumenspa
dc.description.tableofcontentsÍndice de fi gurasspa
dc.description.tableofcontents1. Estructuras magnéticas 20spa
dc.description.tableofcontents1.1. Materiales Ferromagnéticos . . . . . . . . . . . . . . . . . . . . . . . 20spa
dc.description.tableofcontents1.2. Materiales Ferrimagnéticos . . . . . . . . . . . . . . . . . . . . . . . . 24spa
dc.description.tableofcontents1.3. Interacción de Intercambio . . . . . . . . . . . . . . . . . . . . . . . . 30spa
dc.description.tableofcontents1.4. Modelo de Ising . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30spa
dc.description.tableofcontents1.4.1. Modelo de Ising unidimensional . . . . . . . . . . . . . . . . . 31spa
dc.description.tableofcontents1.4.2. Modelo de Ising en dos dimensiones . . . . . . . . . . . . . . . 32spa
dc.description.tableofcontents1.5. Método Monte Carlo . . . . . . . . . . . . . . . . . . . . . . . . . . . 34spa
dc.description.tableofcontents1.5.1. Muestreo Directo . . . . . . . . . . . . . . . . . . . . . . . . . 35spa
dc.description.tableofcontents1.5.2. Muestreo de Importancia . . . . . . . . . . . . . . . . . . . . . 36spa
dc.description.tableofcontents1.5.3. Cadenas de Markov . . . . . . . . . . . . . . . . . . . . . . . . 37spa
dc.description.tableofcontents1.5.4. Algoritmo de Metropolis . . . . . . . . . . . . . . . . . . . . . 38spa
dc.description.tableofcontents1.6. Descripción del algoritmo para sistemas mixtos de Ising: Algoritmo baño térmico . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39spa
dc.description.tableofcontents1.7. Transiciones de fase . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41spa
dc.description.tableofcontents1.7.1. Transiciones de fase de primer orden . . . . . . . . . . . . . . 42spa
dc.description.tableofcontents1.7.2. Transiciones de fase de segundo orden . . . . . . . . . . . . . . 43spa
dc.description.tableofcontents1.7.3. Transiciones de fase Ferromagnéticas . . . . . . . . . . . . . . 44spa
dc.description.tableofcontentsI RESULTADOS Y ANÁLISIS: SISTEMA FERRIMAGNÉTICO 46spa
dc.description.tableofcontents2. Diagramas de fase a temperaturas fi nitas del ferrimagneto de espines S = 5/2 y Q= 7/2 . . . . 47spa
dc.description.tableofcontents2.1. CASO I: Modelo J1 - J2 - D - h . . . . . . . . . . . . . . . . . . 49spa
dc.description.tableofcontents2.1.1. Efecto de h: Diagramas de fase a temperatura fi nita . . . . . . . . . 49spa
dc.description.tableofcontents2.1.2. Efecto de J2: Diagramas de fase a temperatura fi nita . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59spa
dc.description.tableofcontents2.2. CASO II: Modelo J1 - J2 - J3 - h . . . . . . . . . . . . . . . . . . 68spa
dc.description.tableofcontents2.2.1. Comportamiento termomagnético de la energía y el calor específi co . ... 69spa
dc.description.tableofcontents2.2.2. Comportamiento termomagnético de las magnetizaciones y la susceptibilidad magnética . . . . . . . . . . . . . . . . . . . . 72spa
dc.description.tableofcontentsII RESULTADOS Y ANÁLISIS: SISTEMA FERROMAGNÉTICO 84spa
dc.description.tableofcontents3. Diagramas de fase a temperaturas finitas del ferromagneto de espines S = 5/2 y Q = 7/2 85spa
dc.description.tableofcontents3.1. CASO I: Modelo ferromagnético J1 - J2 - J3 - h . . . . . . . . 85spa
dc.description.tableofcontents3.1.1. Comportamiento termomagnético de la energía y el calor específi co . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86spa
dc.description.tableofcontents3.1.2. Comportamiento termomagnético de las magnetizaciones y la susceptibilidad magnética . . . . . . . . . . . . . . . . . . . . 89spa
dc.description.tableofcontents3.2. CASO II: Modelo ferromagnético J1 - J2 - D - h . . . . . . . . 95spa
dc.description.tableofcontents3.2.1. Efecto de h: Diagramas de fase C, Tc y MT . . . . . . . . . . . 96spa
dc.description.tableofcontents3.2.2. Efecto de J2: Diagramas de fase C, Tc y MT . . . . . . . . . . 98spa
dc.description.tableofcontents4. Conclusiones 101spa
dc.description.tableofcontents4.1. Parte I: Sistema Ferrimagnético . . . . . . . . . . . . . . . . . . . . . 101spa
dc.description.tableofcontents4.1.1. CASO I: Modelo J1 -J2 - D - h . . . . . . . . . . . . . . . . 101spa
dc.description.tableofcontents4.1.2. CASO II: Modelo J1 - J2 - J3 - h . . . . . . . . . . . . . . . 102spa
dc.description.tableofcontents4.2. Parte II: Sistema Ferromagnético . . . . . . . . . . . . . . . . . . . . 103spa
dc.description.tableofcontents4.2.1. CASO I: Modelo ferromagnético J1 - J2 - J3 - h . . . . . . . 103spa
dc.description.tableofcontents4.2.2. CASO II: Modelo ferromagnético J1 - J2 - D - h . . . . . . . 103spa
dc.format.mimetypeapplication/pdfspa
dc.identifier.urihttps://repositorio.unicordoba.edu.co/handle/ucordoba/4366
dc.language.isospaspa
dc.publisherUniversidad de Córdoba
dc.publisher.facultyFacultad de Ciencias Básicasspa
dc.publisher.placeMontería, Córdoba, Colombiaspa
dc.publisher.programMaestría en Ciencias Físicasspa
dc.rightsCopyright Universidad de Córdoba, 2021spa
dc.rights.accessrightsinfo:eu-repo/semantics/restrictedAccessspa
dc.rights.creativecommonsAtribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)spa
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/spa
dc.subject.keywordsFerromagnetic systemeng
dc.subject.keywordsFerrimagnetic systemeng
dc.subject.keywordsCompensation temperatureeng
dc.subject.keywordsMixed Ising modeleng
dc.subject.keywordsCritical temperatureeng
dc.subject.proposalSistema ferromagnéticospa
dc.subject.proposalSistema ferrimagnéticospa
dc.subject.proposalTemperatura de compensaciónspa
dc.subject.proposalModelo de Ising Mixtospa
dc.subject.proposalTemperatura críticaspa
dc.titleComportamiento termomagnético de los sistemas ferro y ferrimagnético de espines S = 5/2 Y Q = 7/2spa
dc.typeTrabajo de grado - Maestríaspa
dc.type.coarhttp://purl.org/coar/resource_type/c_bdccspa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/masterThesisspa
dc.type.redcolhttps://purl.org/redcol/resource_type/TMspa
dc.type.versioninfo:eu-repo/semantics/submittedVersionspa
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