Nanomagnetism Laboratory Universidad de los Andes

Publications · Talks

56 talks, 2015–2026

Talks and posters given by the group, separated by who presented them. Back to publications.

Students and group members

Talks and posters given by members of the group. Contributions at IMRC between 2020 and 2025 are still being recovered and are not all listed yet.

Contributed1

  1. Point defects in zinc oxide quantum dots: a combined first-principles and experimental approach

    Juana Valeria Pinzón Reyes and Santiago Alejandro Lizarazo Villamizar 34th International Materials Research Congress (IMRC 2026), poster SC6-P052

    Juana Pinzón, Santiago Lizarazo

    Cancún, Mexico 16-20 Aug 2026

Seminar5

  1. Correlaciones electrónicas en nanopartículas de niquelatos de tierras raras: evidencia de localización débil a bajas temperaturas

    D. Carranza Condensed Matter Physics Seminar, Universidad de los Andes

    Bogotá, Colombia 13 Aug 2019

  2. FORC analysis: a tool to understand intrinsic magnetic properties

    E. Ramos Condensed Matter Physics Seminar, Universidad de los Andes

    Bogotá, Colombia 27 Feb 2018

  3. Comportamiento multiferroico en nanopartículas de BiFeO₃

    A. Cardona Condensed Matter Physics Seminar, Universidad de los Andes

    Bogotá, Colombia 20 Feb 2018

  4. Memristores basados en materiales ferroeléctricos y sus posibles aplicaciones

    A. Cardona Condensed Matter Physics Seminar, Universidad de los Andes

    Bogotá, Colombia 12 Apr 2016

  5. Computación neuromórfica con dispositivos ferroeléctricos

    M. F. Gómez Condensed Matter Physics Seminar, Universidad de los Andes

    Bogotá, Colombia 3 May 2016

Juan Gabriel Ramírez

Invited and contributed talks, seminars and colloquia given by the PI.

Invited28

  1. Effect of superconductivity on magnetism in a superconducting/magnetic hybrid

    Juan Gabriel Ramírez IMRC 2024

    Cancún, Mexico 21 Aug 2024

  2. Emergence of metastable states in electronic phase-separated manganites

    Juan Gabriel Ramírez IMRC 2024

    Cancún, Mexico 20 Aug 2024

  3. Magnetism dynamics of magnetic oxide heterostructures

    Juan Gabriel Ramírez Colóquio, Instituto de Física Gleb Wataghin (IFGW), UNICAMP

    Campinas, SP, Brazil 6 Jun 2024 Video

  4. Magnetization dynamics: from fundamentals to applications

    Juan Gabriel Ramírez Tercera Escuela Colombiana de Magnetismo, Universidad Nacional sede Manizales

    Manizales, Colombia 17 Nov 2023

  5. Magnetism dynamics of magnetic oxide heterostructures

    Juan Gabriel Ramírez Simposio de Imanes Permanentes y Materiales para Energías Limpias, Universidad del Valle

    Cali, Colombia 8 Nov 2023

  6. Fabrication and characterization of iron-oxide-based nanodisks for medical applications

    Juan Gabriel Ramírez Magnamed meeting, Universidad del País Vasco

    Bilbao, Spain 19 Oct 2023

  7. Physical properties driven by phase separation in electron-correlated materials: percolation and avalanches

    Juan Gabriel Ramírez 4ta Escuela de Física Estadística, Universidad Nacional – Uniandes

    Bogotá, Colombia 6 Oct 2023

  8. Strongly correlated materials for quantum technology: experimental approach

    Juan Gabriel Ramírez 2nd Workshop on Higher Structures in Algebra, Geometry, Topology and Physics

    Barranquilla, Colombia 28 Feb 2023

  9. Nanoscale properties of multifunctional oxide materials: role of defects and microstructure

    Juan Gabriel Ramírez International Workshop on Ceramics, Nanomaterials, Magnetism and Cryogenics, Universidad Nacional sede Medellín

    Medellín, Colombia 25 Nov 2022

  10. Neuromorphic computing: analog vs digital

    Juan Gabriel Ramírez Neuromorphic lecture series, UC San Diego

    San Diego, CA, USA 21 Jul 2022

  11. Magnetism dynamics of oxide-magnetic heterostructures

    Juan Gabriel Ramírez Special Seminar, Materials Science and Engineering, Cornell University

    Ithaca, NY, USA 11 May 2022

  12. Micromagnetic simulations to explore nanoscale effects in complex materials: phase separation and dynamics

    Juan Gabriel Ramírez 1st Latin-American Tutorial of Magnetism — Modeling and Simulations on Magnetism

    Virtual 8–19 Nov 2021

  13. Fenómenos cuánticos en sistemas de baja dimensionalidad

    Juan Gabriel Ramírez Coloquio de Física, Universidad de los Andes

    Bogotá, Colombia 12 Oct 2021 Video

  14. Unusual dynamical properties of oxide-magnetic nanostructures: from nanoparticles to films

    Juan Gabriel Ramírez Condensed Matter Physics Seminar, Universidad Nacional de La Plata

    La Plata, Argentina 5 Oct 2021

  15. Unusual dynamical properties of oxide-magnetic heterostructures: proximity effects

    Juan Gabriel Ramírez Condensed Matter Physics Seminar, Universidad de Chile

    Virtual 7 Apr 2021 Video

  16. Unusual dynamical properties of oxide-magnetic heterostructures

    Juan Gabriel Ramírez Annual Conference on Magnetism and Magnetic Materials 2020

    Virtual 2 Nov 2020

  17. Confinement effects in quantum matter

    Juan Gabriel Ramírez Universidad del Norte

    Barranquilla, Colombia 23 Jan 2020

  18. Mechanisms of the photo- and voltage-induced phase transition in the electron-correlated V₂O₃

    Juan Gabriel Ramírez XXVIII International Materials Research Congress — IMRC 2019

    Cancún, Mexico 18–23 Aug 2019

  19. Tailoring novel functionalities in quantum materials

    Juan Gabriel Ramírez Materials Science & Engineering Seminar, University of Florida

    Gainesville, FL, USA 4 Sep 2018

  20. Size-induced multiferroicity in oxide nanoparticles

    Juan Gabriel Ramírez XXVII International Materials Research Congress — IMRC 2018

    Cancún, Mexico 19–24 Aug 2018

  21. Magnetism @ Uniandes

    Juan Gabriel Ramírez 1st Cali Magnetism School, Universidad del Valle

    Cali, Colombia 26 Feb – 2 Mar 2018

  22. Dinámica ultra-rápida de transiciones de fase de primer orden

    Juan Gabriel Ramírez Physics Seminar, Universidad del Valle

    Cali, Colombia 18 Oct 2017

  23. Correlaciones cuánticas en sólidos

    Juan Gabriel Ramírez Physics Colloquium, Universidad Distrital

    Bogotá, Colombia 8 Sep 2017 Video

  24. Pathways to control magnetization dynamics with first-order phase transitions

    Juan Gabriel Ramírez Physics Seminar, Bar-Ilan University

    Ramat Gan, Israel 20 Dec 2016

  25. Controlling magnetization dynamics in heterostructures with first-order phase transitions

    Juan Gabriel Ramírez Physics Seminar, Universidad Autónoma de Madrid

    Madrid, Spain 14 Dec 2016

  26. Strongly correlated materials: nanoscale phase coexistence as a tool for magnetic control in hybrid materials

    Juan Gabriel Ramírez 1st International Workshop on Superconductivity and Magnetism at Low Dimensionality, Universidad de los Andes

    Bogotá, Colombia 5 Dec 2016

  27. Controlling magnetization dynamics in hybrid heterostructures with first-order phase transitions

    Juan Gabriel Ramírez 61st Annual Conference on Magnetism and Magnetic Materials

    New Orleans, LA, USA 31 Oct – 4 Nov 2016

  28. Control of magnetization dynamics in hybrid materials at the nanoscale

    Juan Gabriel Ramírez 3rd International Conference on Nanoscience, Nanotechnology and Nanobiotechnology, University of Brasília

    Brasília, Brazil 14–18 Dec 2015

Contributed21

  1. Magnetism dynamics of oxide-magnetic heterostructures

    Juan Gabriel Ramírez CMRR Spring Meeting, UC San Diego

    La Jolla, CA, USA 25 May 2022

  2. Evidence of phase separation in a (La,Pr,Ca)MnO₃ thin film by ferromagnetic resonance

    Juan Gabriel Ramírez APS March Meeting 2021

    D. Carranza, E. Skoropata, A. Biswas, M. Fitzsimmons, I. K. Schuller, J. G. Ramírez

    Virtual 15–19 Mar 2021

  3. Strain control in multiferroic BiFeO₃ nanoparticles

    Juan Gabriel Ramírez XXVIII International Materials Research Congress — IMRC 2019

    A. Cardona, D. Carranza, A. Hojem, A. Reiber, I. Schuller, J. G. Ramírez

    Cancún, Mexico 18–23 Aug 2019

  4. Magnetism of BiFeO₃ nanoparticles across its ferroelectric phase transition

    Juan Gabriel Ramírez APS March Meeting 2019

    A. Cardona, E. Ramos, A. Hojem, A. Reiber, I. Schuller, J. G. Ramírez

    Boston, MA, USA 4–8 Mar 2019

  5. Coercivity distributions in BiFeO₃ nanoparticles

    Juan Gabriel Ramírez APS March Meeting 2019

    E. Ramos, A. Cardona, J. G. Ramírez

    Boston, MA, USA 4–8 Mar 2019

  6. Resistive switching in La₀.₃Ca₀.₇MnO₃/YBa₂Cu₃O₇₋δ devices

    Juan Gabriel Ramírez APS March Meeting 2019 (poster)

    J. Betancourt et al., J. G. Ramírez

    Boston, MA, USA 4–8 Mar 2019

  7. Volatile resistive memory and dynamics of VOₓ nanodevices

    Juan Gabriel Ramírez APS March Meeting 2018

    J. del Valle et al.

    Los Angeles, CA, USA 5–9 Mar 2018

  8. Multiferroic order in BiFeO₃ nanoparticles

    Juan Gabriel Ramírez APS March Meeting 2018

    Juan Gabriel Ramírez et al.

    Los Angeles, CA, USA 5–9 Mar 2018

  9. Size effects in the ferroelectricity of BaTiO₃ single nanoparticles

    Juan Gabriel Ramírez APS March Meeting 2018

    Jackeline Narváez et al.

    Los Angeles, CA, USA 5–9 Mar 2018

  10. Conmutación resistiva y ferroeléctrica en películas delgadas de BiFeO₃

    Juan Gabriel Ramírez Congreso Nacional de Física

    María F. Gómez et al.

    Cartagena, Colombia 3 Oct 2017

  11. Síntesis y caracterización individual de la respuesta ferroeléctrica en nanopartículas de BiFeO₃

    Juan Gabriel Ramírez Congreso Nacional de Física

    Diego Carranza et al.

    Cartagena, Colombia 3 Oct 2017

  12. Control of multiferroic order in BiFeO₃ nanoparticles

    Juan Gabriel Ramírez 62nd Annual Conference on Magnetism and Magnetic Materials

    A. Cardona, D. Carranza, I. Valmianski, J. del Valle, I. K. Schuller, A. Reiber, J. G. Ramírez

    Pittsburgh, PA, USA 6–10 Nov 2017

  13. Domain wall pinning driven by nanoscale phase coexistence in Ni/V₂O₃ bilayers

    Juan Gabriel Ramírez 62nd Annual Conference on Magnetism and Magnetic Materials

    A. Fraile Rodríguez, I. Valmianski, M. García del Muro, J. G. Ramírez, F. Kronast, I. K. Schuller, A. Labarta, X. Batlle

    Pittsburgh, PA, USA 6–10 Nov 2017

  14. Size effects in the ferroelectricity of BaTiO₃ single nanoparticles

    Juan Gabriel Ramírez APS March Meeting 2017

    Juan Gabriel Ramírez et al.

    New Orleans, LA, USA 13–17 Mar 2017

  15. Simple transition metal oxides

    Juan Gabriel Ramírez International French–US Laboratory on Nanoelectronics

    I. K. Schuller, A. C. Basaran, J. de la Venta, J. G. Ramírez, T. Saerbeck, I. Valmianski, S. Wang

    4 Nov 2016

  16. Collective mode splitting in coupled ferromagnet/oxide heterostructures

    Juan Gabriel Ramírez APS March Meeting 2016

    J. G. Ramírez, J. de la Venta, S. Wang, T. Saerbeck, A. C. Basaran, X. Batlle, I. K. Schuller

    Baltimore, MD, USA 14–18 Mar 2016

  17. Voltage-mediated metal-to-insulator transition in VO₂ and V₂O₃ nanodevices

    Juan Gabriel Ramírez APS March Meeting 2016

    I. Valmianski, J. G. Ramírez, S. Wang, S. Guénon, I. K. Schuller

    Baltimore, MD, USA 14–18 Mar 2016

  18. Cryogenic optical nano-imaging of phase coexistence in correlated oxides

    Juan Gabriel Ramírez APS March Meeting 2016

    A. S. McLeod et al.

    Baltimore, MD, USA 14–18 Mar 2016

  19. Characterizing phase transitions in known materials with magnetic field modulated microwave spectroscopy (MFMMS)

    Juan Gabriel Ramírez APS March Meeting 2016

    J. Wampler, J. G. Ramírez, A. Basaran, I. K. Schuller

    Baltimore, MD, USA 14–18 Mar 2016

  20. Search for new superconductors: an electromagnetic phase transition in an iron meteorite inclusion at 117 K

    Juan Gabriel Ramírez APS March Meeting 2016

    S. Guénon, J. G. Ramírez, A. Basaran, J. Wampler, I. K. Schuller

    Baltimore, MD, USA 14–18 Mar 2016

  21. Resistive and ferroelectric-domain switching in multiferroic BiFeO₃ films

    Juan Gabriel Ramírez 1st Workshop on Superconductivity and Magnetism at Low Dimensions

    A. Cardona et al.

    Bogotá, Colombia 2016

Colloquium1

  1. Correlaciones cuánticas en sólidos: avalanchas, auto-organización y separación de fases

    Juan Gabriel Ramírez Coloquio de Física, Universidad de los Andes

    Bogotá, Colombia 24 Oct 2016