2007
Event:
Pan- American Advanced Study Institute: Electronic States
and Excitations on Nanostructures
Place and date: Zacatecas, México- junio del
11 al 22
Oral Presentations:
• Finite size and surface effects on the magnetic
properties of a single magnetite nanoparticle
Participants: Johans Restrepo Cárdenas
Event: The Sixth International Conference on Low Dimensional
Structures and Devices LDSD 2007
Place and date: San Andrés Islas, Colombia- abril
del 15 al 20
Oral Presentations:
• Monte Carlo study of magnetic properties in
two-dimensional lattices of manganites La2/3Ca1/3MnO3
• Impurity-related polarizability and photoionization-cross
section in GaAs-Ga1-xAlxAs double quantum wells under
electric Field and hydrostatic pressure
• Magnetic properties and stoichiometry on magnetite
nanoparticles
• Magnetic properties on alfa-Fe and disordered
alfa-FeMnAl nanoparticles: a variational approach
• Influence of the hydrostatic pressure onto the
electronic and transport properties of n-type double
delta-doped quantum wells in GaAs
• Exciton diamagnetic shitf in GaAs/Ga1-xAlxAs
quantum wells under in-plane magnetic fields
• Optical transitions in self-assembled InAs/GaAs
quantum lens under high hydrostatic pressure
• Energy states in GaAs delta-doped field effect
transistors under hydrostatic pressure
• Magnetic and hysteretic behavior of a magnetite
nanoparticle: a Monte Carlo simulation
Participants: A. L. Morales, N. Raigoza, E. Reyes-Gómez,
J. M. Osorio-Guillén, A. Montes, S. Y. López,
J. Restrepo, Carlos Alberto Duque Echeverri, I. Rodríguez-Vargas,
M. E. Mora-Ramos, M. De Dios-Leyva, L. E. Oliveira,
Arezky H. Rodríguez, C. Trallero-Giner, G. J.
Vázquez, Porras-Montenegro, J. C. Martinez-Orozco,
J. Mazo-Zuluaga, J. Mejia-López
2006
Event:
Tenth latin america conference on the applications of
the Mössbauer Effect LACAME 2006.
Place and date: Río de Janeiro, Brazil- Noviembre
del 5 al 9
Oral Presentations:
• Magnetic properties across grain boundaries
in nanocrystalline ball-milled iron.
• Structural and hyperfine properties in nanocrystalline
ball-milled iron
Participants: Johans Restrepo Cárdenas, Johan
Mazo-Zuluaga, E. A. Velásquez, Luis Fernando
Duque.
Event:
At the Frontiers of Condensed Matter III. New trends
in structural, electronic and magnetic properties of
matter FCM2006
Place and date: Buenos Aires, Argentina- diciembre del
11 al 15
Oral Presentations:
• Magnetic behavior across intergranular regions
• Surface Néel anisotropy in a magnetite
nanoparticle: Monte Carlo simulation
Participants: Johans Restrepo Cárdenas
Event:
Workshop on Properties of Nanostructures
Place and date: Santiago de Chile, Chile- Diciembre
del 4 al 7
Participants: Johans Restrepo Cárdenas
2005
Event:
VII Latin American Workshop on Magnetism, Magnetic Materials
and their Applications LAW3M-05
Place and date: Reñaca, Chile- Diciembre del
12 al 16
Oral Presentations:
• Monte Carlo study of the magnetic properties
of Magnetite thin films
• Magnetic critical behavior of ferromagnetic
ising thin films
• Magnetic properties of maghemite nanoparticles:
A Heisenberg- Monte Carlo study
Participants: Johans Restrepo Cárdenas, Johan
Mazo Zuluaga, Pilar Cossio, J. M. Greneche, Y. Labaye
Event:
XIV International Materials Research Congress (CIAM
Workshop)
Place and date: Cancun, Mexico
Oral Preesentations:
• B-FeOOH prepared by hydrolysis of FeCl3 solutions
in the presence of Cu2+, Al3+, Cr3+, and Ti4+ ions
• Hematites obtained from thermal decomposition
of Cr- goethites and Fe-Ni or Fe-Zn oxinates
Participants: César Augusto Barrero Meneses,
Álvaro Luís Morales Aramburo, Jean Marc
Greneche, Karen Edilma García Tellez, Celia Saragovi,
Elsa Sileo, Diego Pérez
Event:
Internacional Conference on Applications of the Mössbauer
Effect ICAME 2005
Place and date: Montpellier, Francia- septiembre del
5 al 9
Oral Presentations:
• A 57Fe Mössbauer study of the rust formed
on steels submitted to dry-wet cycles
• A 57Fe Mössbauer study of synthetic B-FeOOH
obtained in the presence of different ions and urea
• Mössbauer analysis of ball-milled nanostructured
hematite
• Magnetic phase diagram for goethites as a function
of water content, surface area and temperature
Participants: César Augusto Barrero Meneses,
Álvaro Luís Morales Aramburo, Jean Marc
Greneche, Karen Edilma García Tellez, Gerardo
F Goya, Thelma De Souza Berquo, Juan David Betancur
Ríos.
Event:
HFILP 2005 - 35th Anniversary of Hyperfine interactions
at La Plata International Workshop & Humboldt Kolleg
on SOLID STATE PHYSICS
Place and date: La Plata, Argentina- noviembre del 7
al 10
Oral Presentations:
• Fe-57 Mössbauer study of ß-FeOOH
obtained in presence of Al3+ and Ti4+ ions
Participants: Álvaro Luís Morales Aramburo,
César Augusto Barrero Meneses, Jean Marc Greneche,
Karen Edilma Garcia Tellez
Event:
36th Spring School Magnetism Goes Nano
Place and date: Jülich, Alemania- Febrero del 14
al 25
Participants: Flavia Juliana Molina Durán
Event:
Seminario Internacional Sobre Sistemas Dinamicamente
Reconfigurables
Place and date: Medellín, Colombia- Febrero de
23 al 26
Participants: Jorge Hernan Lopez Botero
2004
Event:
International Workshop on Atmospheric Corrosion and
Weathering Steels
Place and date: Cartagena, Colombia- septiembre 27 a
octubre 1
Oral Presentations:
• A comparative study of the magnetite obtained
synthetically and as a corrosion product
• Rust formation in weathering and carbon steels
exposed to chloride rich environments
Participants: Álvaro Luís Morales Aramburo,
Julio César Minotas Ruiz, César Augusto
Barrero Meneses, Luís Conrado Suárez,
Maria Isabel Mejia Correa, Karen Edilma García
Téllez, Carlos Enrique Arroyave Posada, Jean
Marc Greneche
Event:
Ninth Latin American Conference on Applications of the
Mössbauer Effect LACAME 04
Place and date: Ciudad de México, México-
septiembre del 19 al 24
Oral Presentations:
• Ferrimagnetic to paramagnetic transitions in
magnetite: Môssbauer vs Monte Carlo
Participants: Johans Restrepo Cárdenas, Johan
Mazo Zuluaga
Event:
XXVII Encontro Nacional de Física da Matéria
Condensada
Place and date: Poços de Caldas, Brasil- mayo
del 4 al 8
Oral Presenations:
• Photoionization cross-section of donor impurities
in spherical GaAs quantum dots: hydrostatic pressure
effects
• Donor-related optical absorption spectra in
GaAs-(Ga,Al)As quantum wells: hydrostatic pressure effects
• Infinite potential barrier and hydrostatic pressure
effects on donor impurity states in assymetrical GaAs
double quantum wells
Participants: Julián David Correa, Nelson Porras
Montenegro, Carlos Alberto Duque Echeverri, Sonia Yaneth
López Ríos, Nicolás Raigoza Bohórquez,
Álvaro Luís Morales Aramburo
Event:
At the Frontiers of Condensed Matter II: Magnetism,
Magnetic Materials and their Applications FCM04
Place and date: Buenos Aires, Argentina- junio del 22
al 26
Oral Presentations:
• Magnetic and crystal structure refinement in
b-FeO(OH)Cln(H2O) nanoparticle
Participants: Álvaro Luís Morales Aramburo,
César Augusto Barrero Meneses, Jean Marc Greneche,
Karen Edilma Garcia Tellez, Carlos Enrique Arroyave
Posada, Johans Restrepo Cárdenas
Event:
International Symposium on The Industrial Applications
of the Mössbauer Effect
Place and date: Madrid, España
Oral Presentations:
• Design and construction of an automous and low
cost pulse height analyser and a single channel analyser
for Mössbauer spectrometry
Participants: Álvaro Luís Morales Aramburo,
Jorge Enrique Tobón Gómez, Álvaro
Andrés Velásquez Torres, José Mario
Trujillo Vargas, Lucelly Reyes, Ramón Gancedo
Event:
Joint European Magnetic Symposia JEMS04
Place and date: Dresden, Alemania- septiembre del 5
al 10
Participants: Johans Restrepo Cárdenas
Evento:
XVII Latin America Symposium on Solid State Physics
SLAFES04
Place and date: La Habana, Cuba- diciembre del 6 al
9
Participants: Johans Restrepo Cárdenas
2003
Event:
5to. Congreso de Corrosión de la NACE Región
Latinoamérica. 8vo. Congreso Iberoamericano de
Corrosión y Protección
Place and date: Santiago de Chile, Chile
Oral Presentations:
• Characterization of corrosion products obtained
in an inmersion corrosion test by Mössbauer and
X-ray diffraction
Participants: K. E. García, Álvaro Luís
Morales Aramburo, César Augusto Barrero Meneses,
J. M. Greneche, C. E. Arroyave
Event:
XI Latin America Congress of Surface Science and its
Aplications CLACSA
Place and date: Pucón, Chile- diciembre del 7
a 12
Participants: Carlos Alberto Duque Echeverri
Event:
88ª Reunión Nacional de la Asociación
Física
Place and date: San Carlos de Bariloche, Argentina-
septiembre
Oral Presentations:
• Propiedades magnéticas y estructurales
de hematitas dopadas con Ni obtenidas a partir de oxinatos
Participants: Gabriel Jaime Pérez Lince, Celia
Saragovi, Roberto Zysler, Luís Carlos Sanchez,
Josefina Arpe, César Augusto Barrero Meneses
Event:
International Conference on Magnetism ICM 03
Place and date: Roma, Italia- del 27 de julio al 1 de
agosto
Participants: Johans Restrepo Cárdenas
Event:
International Conference on the Applications of the
Mössbauer Effect. ICAME 03
Place and date: Muscat, Omán- septiembre del
21 al 25
Participants: Johans Restrepo Cárdenas
Event:
IX Journées du Simulation Numerique: matiere
condensée et desordre
Place and date: Paris, Francia- mayo del 22 al 23
Oral Presentations:
• Surface anisotropy and vacancies in ferromagnetic
nanoparticles
Participants: Johans Restrepo Cárdenas
Event:
II Congreso Internacional de Materiales - VII Congreso
Nacional de Corrosión y Protección
Place and date: Bucaramanga, Colombia
Oral Presentations:
• Productos de corrosión en un ensayo de
inmersión total
Participants: García K. E., Morales A. L., Barrero
C. A., Arroyave C. E., Greneche J. M.
2002
Event:
Fifteen International Corrosion Congress
Place and date: Granada, España
Oral Presentations:
• Synthesis of magnetite in the presence of Al
or Ce ions.
• Structure of the protective rust layers formed
on weathering steels (by simulation of a long term atmospheric
corrosion process)
• Optimization of a rust converter formulation.
Participants: Francisco Bolivar, Julio Minotas, César
Augusto Barrero Meneses, Álvaro Luís Morales
Aramburo, Félix Echeverría, Carlos Arroyave,
L. C. Suárez, M. I. Mejía, L. M. Calle,
L. K. Herrera, J. M. Greneche
Event:
VIII latin american conference on aplications of the
Mössbauer effect. LACAME 2002
Place and date: Ciudad de Panamá, Panamá-
septiembre del 22 al 27
Oral Presentations:
• Enhanced binomial method for hyperfine field
distributions of mechanically alloyed Fe-Si disordered
alloys
• Mössbauer Study of the Corrosion Products
of Steel Painted with an Epoxy Formulation Containing
Magnetite
• Thermal driven and ball-milled haematite to
magnetite transformations
• Bulk magnetic properties of Fe0,5Mn0,1Al0,4
disordered alloys: experimet and Monte Carlo simulation
Participants: Álvaro Luís Morales Aramburo,
Griselda Caballero De Sanchez, Juan A Jaén, Carlos
Enrique Arroyave Posada, Johans Restrepo Cárdenas,
J. D. Betancur, Johan Mazo Zuluaga, C. A. Palacio, J.
J. Fernández, O. Pérez, J. F. Valderruten,
Bohórquez, Claudia González, G. A. Pérez
Alcázar, J. M. Grenéche and O. Arnache
Event:
World Forum on Polymer Applications and Theory POLYCHAR-10
Place and date: Denton, USA- enero del 8 al 11
Participants: Johans Restrepo Cárdenas
Event:
I Congreso Internacional de Materiales y II Encuentro
Nacional de Ciencia y Tecnología de Materiales
Place and date: Bucaramanga, Colombia- noviembre del
5 al 10
Oral Presentations:
• Estudio Monte Carlo-Ising de Aleaciones Magnéticas
Desordenadas Fe0.9-qMn0.1Alq
• Relajación y propiedades mecánicas
de polímeros termoplásticos: Un estudio
Monte Carlo
Participants: Johans Restrepo Cárdenas
2001
Event:
14th International Conference on the Electronic Properties
of Two-Dimensional Systems
Place and date: Prague, Czech Republic- del 29 de julio
al 3 de agosto
Oral Presentations:
• Terahertz dynamics of magnetoexcitons in semiconductor
quantum wells
Participants: Carlos Alberto Duque Echeverri, N. Porras-Montenegro,
L. E.Oliveira
Event:
International Conference on the Applications of the
Mössbauer Effect ICAME01
Place and date: Oxford, Inglaterra
Oral Presentations:
• On the formation of magnetite in the corrosion
products
Participants: Álvaro Luís Morales Aramburo,
César Augusto Barrero Meneses, Maria Isabel Mejia
Correa
Event:
The 8th Joint MMM-Intermag Conference
Place and date: San Antonio, Texas- enero del 7 al 11
Oral Presentations:
• Magnetism of fe-al disordered alloys: an ising-monte
carlo approach
Participants: Johans Restrepo Cárdenas
Event:
I Congreso Internacional de Materiales y II Encuentro
Nacional de Ciencia y Tecnología de Materiales
Place and date: Bucaramanga, Colombia- noviembre del
5 al 10
Oral Presentations:
• Estudio Monte Carlo-Ising de Aleaciones Magnéticas
Desordenadas Fe0.9-qMn0.1Alq
• Relajación y propiedades mecánicas
de polímeros termoplásticos: Un estudio
Monte Carlo
Participants: Johans Restrepo Cárdenas
Event:
Maratón Cuántico- Museo Nacional de Ciencia
y Tecnologia
Place and date: Madrid, España- 13 de marzo
Participants: Johan Mazo Zuluaga
Event:
Fifth Latin American Workshop on Magnetism, Magnetic
Materials and their Applications V LAW3M
Place and date: San Carlos, Bariloche, Argentina- septiembre
del 3 al 7
Participants: Johans Restrepo Cárdenas, Johan
Mazo Zuluaga
2000
Event:
Seventh Latin American Conference on Aplications of
the Mossbauer Effect LACAME 00
Place and date: Caracas, Venezuela- noviembre del 12
al 17
Oral Presentations:
• On the effect of the synthesis method and the
Cu and Cr content on magnetite Properties
• Room temperature magnetic properties of the
mechanically alloyed (fe(1-x)mnx)0.3cu0.7 system
• Arc-melted and ball-milled Fe0.9-xMn0.1Alx alloys:
A comparative Mössbauer study
Participants: Álvaro Luís Morales Aramburo,
Diana Marcela Escobar Sierra, Johans Restrepo Cárdenas,
César Augusto Barrero Meneses, Robert E. Vandenberghe,
Gabriel Jaime Pérez Lince, Jorge Enrique Tobón
Gómez, Jean Marc Greneche, Johan Mazo Zuluaga,
Franklin Jaramillo, Carlos Enrique Arroyave Posada,
O. Arnache, G.A. Perez-Alcazar, G. Medina, and J.M.
Gonzalez
Event:
25th International Conference on the Physics of Semiconductors
Place and date: Osaka, Japón- septiembre del
17 al 22
Participants: Johans Restrepo Cárdenas
Event:
Joint INFM The Abdus Salam ICTP School on Magnetic Properties
of Condensed Matter Investigated by Neutron Scattering
and Synchotron Radiation Techniques
Place and date: Trieste, Italia- febrero del 1 al 11
Participants: Johans Restrepo Cárdenas
Event:
The 9th International Conference on Shallow-Level Centers
in Semiconductors
Place and date: Awaji Island, Hyogo, Japón
Oral Presentations:
• Binding energy and polarizability in gaas-(ga,al)as
quantum-well wires
• Shallow-donor states in semiconductor heterostructures
within the fractional dimensional space approach
Participants: Johans Restrepo Cárdenas
Event:
7th Ibero-American Congress of Corrosion and Protection
and 4TH Nace latin American Region Corrosion Congress.
LATINCOR 2000
Place and date: Hotel Hilton, Cartagena de Indias, Colombia-
septiembre del 17 al 22
Oral Presentations:
• On the effect of the synthesis method and the
Cu and Cr content on the magnetite properties
• Evaluacion por cebelcor de aceros autoprotectores
• Corrosion related iron oxides: cu,mn, an cr
dopped hematite
• An x-ray diffraction study of corrosion products
from low carbon steel
• Synthesis and mössbauer characterization
of copper and chrome doped magnetites
• Autonomous system design for mossbauer spectra
acquisition
• Synthesis and mossbauer characterization of
cu and cr doped magnetites
Participants: Johan Mazo Zuluaga, Felipe Osorio, Robert
Vandenberghe, Jean marc Greneche, Álvaro Luís
Morales Aramburo, César Augusto Barrero Meneses,
Gabriel Jaime Perez Lince, Jorge Enrique Tobón
Gomez, Carlos Arroyave, Franklin Jaramillo, Paula Montoya,
Bolivar F., Perez G., Arnache O., Rodriguez C., Arroyave
C., F. Jaramillo, D.M. Escobar, L.F. Osorio
1999
Event:
15th Latin America Symposium on Solid State physics
(slafes-XV)
Place and date: Hotel Caribe, Bocagrande, Cartagena-
noviembre del 1 al 5
Oral Presentations:
• The relation between corrosion rates and corrosion
products from low carbon steel
• Structural and Electrical properties of grain
boundary josephson junctions based on Bi2Sr2CaCu2O8+d
thin films
• Photoresponse of Ag-doped YBaCu3Ox thin films
under continuous and chopped illumination
• Confined magneton-exciton in GaAs-(Ga,Al)As
quantum wells
• Binding and transition energies for Wannier
excitons in GaAs/AlxGa1-xAs quantum wells
• Density of impurity states and donor-related
optical absorption spectra of GaAs-(Ga,Al)As heteroestructures
• Density of states of a donor impurity in GaAs
quantum box under the action of and applied electric
field
• Caracterizacion mineralogica de un suelo andisol
• Intraexcitonic energy transition in vacuum/GaAs/vacuum
quantum wells
• Polaron free-energy in GaAs quantum well
Participants: Doris Amalia Giratá Lozano, Pedro
Prieto, Jairo Giraldo, Hernando Ariza, Álvaro
Luís Morales Aramburo, D. Cartagena, J.L. Rendón,
A. Valencia, S. Velez, R. Zapata, F.L. Gutierrez, Johan
Mazo Zuluaga
Event:
19 CONBRASCORR Congreso Brasilero de Corrosión
Place and date: Rio de Janeiro, Brasil
Oral Presentations:
• Optimização da formulação
de um convertedor de ferrugem.
Participants: L. M. Ocampo, C. E. Arroyave, C. A. Barrero,
S. Peñaranda
Event:
IX Latin American Congress on Surface Science and its
Applications (CLACSA-9)
Place and date: La Habana, Cuba- julio del 5 al 9
Oral Presentations:
• Density of shallow-donor impurity states in
gallium arsenide quantum boxes
Participants: A. Montes, Carlos Alberto Duque Echeverri,
N. Porras-Montenegro
Event:
44th Annual Conference on Magnetism & Magnetic Materials
Place and date: San José, California USA- noviembre
15 al 18
Oral Presentations:
• Room temperature magnetic properties of quenched-disordered
feal alloys: a simulational study
Participants: Johans Restrepo Cárdenas
Event:
XI Workshop On Strongly Correlated Electron Systems
Place and date: Trieste, Italia
Participants: Johans Restrepo Cárdenas
Event:
The First Stig Lundqvist Research Conference On: The
Advancing Frontiers In Condensed Matter Physics: "Quantum
Phases In Electron Systems Of Low Dimensions"
Place and date: Trieste, Italia
Participants: Johans Restrepo Cárdenas
Event:
International Conference on Applications of the Mössbauer
Effect, ICAME'99
Place and date: Garmisch, Partenkirchen, Alemania
Oral Presentations:
• Mössbauer characterization of oxides and
(oxy)hydroxides: the present state of the art
• The reaction mechanisms of corrosión
products formed at the steel surfaces with some rust
converters
Participants: Johans Restrepo Cárdenas, César
Augusto Barrero Meneses, Carlos Enrique Arroyave Posada,
Luz Marina Ocampo Carmona, Álvaro Luís
Morales Aramburo, Germán Antonio Pérez
Alcázar, A. Bohórquez
1998
Event:
Sixth Latin American Conference on Applications of the
Môssbauer Effect, LACAME 98
Place and date: Hotel Caribe, Cartagena de Indias, Colombia-
septiembre del 13 al 19
Oral Presentations:
• Magnetic properties of the mechanically alloyed
Fe0.9-xMn0.1Alx system
• The effect of the Al-content and crystallinity
on the magnetic properties of goethite
• The polar coordinates of the Hhf direction with
respect to the EFG principal axes in Al-goethites
• Cu-doped magnetites obtained by hydrolysis
• Synthesis of goethite as rust constituent
• Data acquisition interfase for Mossbauer spectroscopy.
Participants: Álvaro Luís Morales Aramburo,
César Augusto Barrero Meneses, Carlos Arroyave
Posada, Germán Antonio Pérez Alcázar,
Alberto Bohorquez, Ligia Edith Zamora, Jesus Anselmo
Tabares, Johans Restrepo Cárdenas
Event:
24th International Conference on the Physics of Semiconductors
Place and date: Jerusalem, Israel
Oral Presentations:
• Model calculation of the photoluminescence lineshape
of electron to acceptor-impurity recombination in GaAs
quantum-wire microcrystals
Participants: Carlos Alberto Duque Echeverri, N. Porras-Montenegro,
A. Latgé, L. E. Oliveira
Event:
II Workshop on Optoelectronic Materials and Their Applications
(Including Solar Cells)
Place and date: La Habana, Cuba- noviembre
Oral Presentations:
• The role of quantum confinement on the binding
energy of some first excitons states in GaAs quantum
wells
• Radiative and nonradiative recombination processes
in rectangular-cross-section vacuum/GaAs/vacuum quantum-well
wires-
• The binding energy and the density of shallow
donor impurity states in GaAs quantum-well wires under
applied electric fields.
Participants: W. Ospina, P. Aristizabal, R. L. Restrepo,
F. Toro, O. Arnache, H. Contreras, O. Panesso, A. Montes,
Carlos Augusto Duque Echeverri, C. A. C. Mendonça,
L. E. Oliveira, N. Porras-Montenegro, C. A. Barrero,
Álvaro Luís Morales Aramburo, L. M. Ocampo,
C. E. Arroyave, S. Peñaranda
Event:
XXTH IUPAC International Conference On Statistical Physics
Place and date: Paris, Francia
Oral Presentations:
• Density of impurity states in GaAs low-dimensional
systems
Participants: Johans Restrepo Cárdenas
Event:
Applied Superconductivity Conference
Place and date: Marriott's Desert Springs Resort, Palm
Desert, California, USA- septiembre del 13 al 18
Participants: Johans Restrepo Cárdenas
Event:
Eleventh Annual Workshop On Recent Developments In Computer
Simulation Studies In Condensed Matter Physics
Place and date: The University of Georgia, Athens, Georgia,
USA- febrero del 23 al 27
Oral Presentations:
• Magnetic properties of the highly diluted Al-Fe
disordered system
Participants: Johans Restrepo Cárdenas
Event:
XIV Simposio Latinoamericano de Física Del Estado
Sólido "LEO FALICOV"
Place and date: Oaxaca, Mexico- enero del 11 al 16
Oral Presentations:
• Photorresponse of Oxygen Deficient YBa2Cu3O6+x
Epitaxial Thin Film
Participants: Johans Restrepo Cárdenas
Event:
The 7th Joint MMM-Intermag Conference
Place and date: San Francisco, California, USA- enero
del 6 al 9
Oral Presentations:
• Phase diagram of a highly diluted disordered
Ising system: The Al-rich Al-Fe system
Participants: Johans Restrepo Cárdenas
Event:
The 8th International Conference on Shallow-Level Centers
in Semiconductors (SLCS-98)
Place and date: Montpellier, Francia- julio del 27 al
30
Oral Presentations:
• Theorical study of density of shallow acceptor
impurity states in GaAs-(Ga,Al)As quantum size microcrystals
• Binding energy of the ground and first few excited
states of a shallow-donor impurity in rectangular-cross-sectional
area gaas quantum-well wires under applied electric
field
Participants: Johans Restrepo Cárdenas
Event:
Reunión Anual de la American Physical Society
"March Meeting"
Place and date: Los Angeles, USA- marzo del 16 al 20
Oral Presentations:
• Persistent in Y-doped Bi2Sr2CaCu2O8+x Thin Films
Participants: Johans Restrepo Cárdenas
Event:
Conference On Hyperfine Interactions In The Solid State:
Experiments And First-Principles Electronic Structure
Calculations
Place and date: Miramare, Trieste, Italia
Oral Presentations:
• The effect of Al content and crystallinity on
some physical properties of goethites derived from a
Mössbauer study
Participants: Johans Restrepo Cárdenas
Event:
Memorias del IV Congreso Nacional y II Internacional
de Ciencia y Tecnología del carbón, Universidad
Pedagógica y Tecnológica de Colombia
Place and date: Tunja, Boyacá
Oral Presentations:
• Actividad catalítica de hierro y niquel
en la gasificación con CO2 de semicoques de Amagá
y Titiribí.
Participants: Álvaro Luís Morales Aramburo,
Fanor Mondragón, A Molina, Alejandro Montoya
1997
Event:
XXXII Zakopane School of Physics on Nuclear Methods
in Materials Science
Place and date: Jagiellonian University, Krakow
Oral Presenations:
• The effect of crystallinity and aluminium content
on the applied-field Mössbauer spectra of goethites
Participants: César Augusto Barrero Meneses,
R. E. Vandenberghe, E. De Grave
Event:
XX Encontro nacional de física da matéria
condensada
Place and date: Caxambu, Brasil
Oral Presentations:
• Photoluminescence spectra associated to shallow
acceptors in GaAs low-dimensional systems
Participants: Nelson Porras Montenegro, Andrea Latgé,
Luiz Eduardo Oliveira, Carlos Alberto Duque Echeverri
1996
Event:
Workshop on Magnetic Hysteresis in Novel Magnetic Materials.
NATO Advanced Study Institute
Place and date: Mykonos, Grecia- julio del 1 al 11
Participants: Johans Restrepo Cárdenas
Event:
Fifth Latin American Conference on Applications of the
Mossbauer
Place and date: Cuzco, Peru
Oral Presenations:
• Immersion-emersion test for corrosion studies
Participants: Álvaro Luís Morales Aramburo,
José Luis Rendón Martínez, César
Augusto Barrero Meneses, Diego Hernán Cartagena
Zapata, Asdrúbal Valencia Giraldo, Charles André
Dauwe
1994
Event:
Fourth Latin American Conference on Applications of
the Môssbauer Effect. LACAME 94
Place and date: Santiago de Chile, Chile- noviembre
Participants: Johans Restrepo Cárdenas
1992
Event:
Proceedings of Conference on Magnetism, Magnetic Materials
and their Applications
Place and date: La Habana, Cuba
Oral Presenations:
• Magnetic susceptibility measurements on High-Tc
Superconducting thin films
Participants: Wilson Lopera Muñoz, E. Solarte,
M Chacón, S Gaona, César Augusto Barrero
Meneses, Luis Fernando Castro Ramírez, María
Elena Gómez De Prieto, Pedro Antonio Prieto Pulido
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