UAB Digital Repository of Documents 15 records found  1 - 10next  jump to record: Search took 0.01 seconds. 
1.
10 p, 2.6 MB Elucidating Individual Magnetic Contributions in Bi-Magnetic Fe3O4/Mn3O4 Core/Shell Nanoparticles by Polarized Powder Neutron Diffraction / Golosovsky, Igor V. (National Research Center "Kurchatov Institute") ; Kibalin, I.A. (Laboratoire Léon Brillouin) ; Gukasov, Arsen (Laboratoire Léon Brillouin) ; Gómez Roca, Alejandro (Institut Català de Nanociència i Nanotecnologia) ; López-Ortega, Alberto (Universidad Pública de Navarra) ; Estrader, Marta (Universitat de Barcelona. Departament de Química Inorgànica) ; Vasilakaki, Marianna (Institute of Nanoscience and Nanotechnology) ; Trohidou, Kalliopi N. (Institute of Nanoscience and Nanotechnology) ; Hansen, T.C. (Institut Laue Langevin) ; Puente Orench, Inés (Instituto de NanoCiencia y Materiales de Aragón) ; Lelièvre-Berna, E. (Institut Laue Langevin) ; Nogués, Josep (Institut Català de Nanociència i Nanotecnologia)
Heterogeneous bi-magnetic nanostructured systems have had a sustained interest during the last decades owing to their unique magnetic properties and the wide range of derived potential applications. However, elucidating the details of their magnetic properties can be rather complex. [...]
2023 - 10.1002/smtd.202201725
Small Methods, Vol. 7, Issue 10 (October 2023) , art. 2201725  
2.
45 p, 1.8 MB Applications of exchange coupled bi-magnetic hard/soft and soft/hard magnetic core/shell nanoparticles / López-Ortega, Alberto (Università degli Studi di Firenze. INSTM and Dipartimento di Chimica U. Schiff) ; Estrader, Marta (Universitat de Barcelona. Departament de Química Inorgànica) ; Salazar-Alvarez, German (Stockholm University. Department of Materials and Environmental Chemistry) ; Gómez Roca, Alejandro (Institut Català de Nanociència i Nanotecnologia) ; Nogués, Josep (Institut Català de Nanociència i Nanotecnologia)
The applications of exchange coupled bi-magnetic hard/soft and soft/hard ferromagnetic core/shell nanoparticles are reviewed. After a brief description of the main synthesis approaches and the core/shell structural-morphological characterization, the basic static and dynamic magnetic properties are presented. [...]
2015 - 10.1016/j.physrep.2014.09.007
Physics Reports, Vol. 553 (January 2015) , p. 1-32  
3.
8 p, 4.9 MB Direct evidence of a graded magnetic interface in bimagnetic core/shell nanoparticles using electron magnetic circular dichroism (EMCD) / Del Pozo Bueno, Daniel (Universitat de Barcelona. Departament d'Enginyeria Electrònica i Biomèdica) ; Varela del Arco, María (Universidad Complutense de Madrid. Departamento de Física de Materiales) ; Estrader, Marta (Universitat de Barcelona. Departament de Química Inorgànica i Orgànica) ; López-Ortega, Alberto (Universidad Pública de Navarra. Departamento de Ciencias) ; Gómez Roca, Alejandro (Institut Català de Nanociència i Nanotecnologia) ; Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ; Peiro, Francesca (Institut Català de Nanociència i Nanotecnologia) ; Estrade, Sonia (Institut Català de Nanociència i Nanotecnologia)
Interfaces play a crucial role in composite magnetic materials and particularly in bimagnetic core/shell nanoparticles. However, resolving the microscopic magnetic structure of these nanoparticles is rather complex. [...]
2021 - 10.1021/acs.nanolett.1c02089
Nano letters, Vol. 21, issue 16 (August 2021) , p. 6923-6930  
4.
36 p, 2.0 MB Probing the meta-stability of oxide core/shell nanoparticle systems at atomic resolution / Roldan, Manuel A. (Universidad Complutense de Madrid. Departamento de Física de Materiales) ; Mayence, Arnaud (Stockholm University. Department of Materials and Environmental Chemistry) ; López-Ortega, Alberto (Universidad de Castilla-La Mancha. Departamento de Física Aplicada) ; Ishikawa, Ryo (University of Tokyo. Institute of Engineering Innovation) ; Salafranca, Juan (Universidad Complutense de Madrid. Departamento de Física de Materiales) ; Estrader, Marta (Institut Català de Nanociència i Nanotecnologia) ; Salazar-Alvarez, German (Uppsala University. Department of Materials Science and Engineering) ; Baró, M. D.. (Universitat Autònoma de Barcelona. Departament de Física) ; Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ; Pennycook, Stephen J. (National University of Singapore. Department of Materials Science & Engineering) ; Varela del Arco, María (Universidad Complutense de Madrid. Departamento de Física de Materiales)
Hybrid nanoparticles allow exploiting the interplay of confinement, proximity between different materials and interfacial effects. However, to harness their properties an in-depth understanding of their (meta)stability and interfacial characteristics is crucial. [...]
2021 - 10.1016/j.cej.2020.126820
Chemical engineering journal, Vol. 405 (Feb. 2021) , art. 126820  
5.
28 p, 966.7 KB Oxide wizard : an EELS application to characterize the white lines of transition metal edges / Yedra Cardona, Lluís (Universitat de Barcelona. Departament d'Electrònica) ; Xuriguera, Elena (Universitat de Barcelona. Departament d'Enginyeria Química) ; Estrader, Marta (Universitat de Barcelona. Departament de Química Inorgànica) ; López-Ortega, Alberto (Università Degli Studi di Firenze. Dipartimento di Chimica U. Schiff) ; Baró, M. D.. (Universitat Autònoma de Barcelona. Departament de Física) ; Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ; Roldan, Manuel (Universidad Complutense de Madrid. Departamento de Física Aplicada III) ; Varela del Arco, María (Oak Ridge National Laboratory) ; Estrade, Sonia (Universitat de Barcelona. Departament d'Electrònica) ; Peiro, Francesca (Universitat de Barcelona. Departament d'Electrònica)
Physicochemical properties of transition metal oxides are directly determined by the oxidation state of the metallic cations. To address the increasing need to accurately evaluate the oxidation states of transition metal oxide systems at the nanoscale, here we present Oxide Wizard. [...]
2014 - 10.1017/S1431927614000440
Microscopy and Microanalysis, Vol. 20, issue 3 (June 2014) , p. 698-705  
6.
33 p, 4.8 MB Unravelling the Elusive Antiferromagnetic Order in Wurtzite and Zinc Blende CoO Polymorph Nanoparticles / Gómez Roca, Alejandro (Institut Català de Nanociència i Nanotecnologia) ; Golosovsky, I. V. (Peterburgskiĭ institut i︠a︡dernoĭ fiziki im. B.P. Konstantinova) ; Winkler, Elin (Centro Atómico Bariloche) ; López-Ortega, Alberto (CIC nanoGUNE) ; Estrader, Marta (Institut Català de Nanociència i Nanotecnologia) ; Zysler, Roberto D. (Centro Atómico Bariloche) ; Baró, M. D.. (Universitat Autònoma de Barcelona. Departament de Física) ; Nogués, Josep (Institut Català de Nanociència i Nanotecnologia)
Although cubic rock salt-CoO has been extensively studied, the magnetic properties of the main nanoscale CoO polymorphs (hexagonal wurtzite and cubic zinc blende structures) are rather poorly understood. [...]
2018 - 10.1002/smll.201703963
Small, Vol. 14, Issue 15 (April 2018) , art. 1703963  
7.
18 p, 1.4 MB Zinc blende and wurtzite CoO polymorph nanoparticles : rational synthesis and commensurate and incommensurate magnetic order / Golosovsky, I. V. (Peterburgskiĭ institut i︠a︡dernoĭ fiziki im. B.P. Konstantinova) ; Estrader, Marta (Institut Català de Nanociència i Nanotecnologia) ; López-Ortega, Alberto (Universidad de Castilla-La Mancha. Departamento de Física Aplicada) ; Gómez Roca, Alejandro (Institut Català de Nanociència i Nanotecnologia) ; López Conesa, Lluís (Universitat de Barcelona. Departament d'Electrònica) ; Del Corro, Elena (Institut Català de Nanociència i Nanotecnologia) ; Estrade, Sonia (Universitat de Barcelona) ; Peiro, Francesca (Universitat de Barcelona) ; Puente Orench, Inés (Instituto de Ciencia de Materiales de Aragón) ; Nogués, Josep (Institut Català de Nanociència i Nanotecnologia)
On the nanoscale, CoO can have different polymorph crystal structures, zinc blende and wurtzite, apart from rock salt, which is the stable one in bulk. However, the magnetic structures of the zinc blende and wurtzite phases remain virtually unexplored. [...]
2019 - 10.1016/j.apmt.2019.06.005
Applied materials today, Vol. 16 (September 2019) , p. 322-331  
8.
43 p, 3.3 MB Combining X-Ray Whole Powder Pattern Modeling, Rietveld and Pair Distribution Function Analyses as a Novel Bulk Approach to Study Interfaces in Heteronanostructures : Oxidation Front in FeO/Fe3O4 Core/Shell Nanoparticles as a Case Study / Ichikawa, Rodrigo U. (IPEN-Instituto de Pesquisas Energéticas e Nucleares) ; Gómez Roca, Alejandro (Institut Català de Nanociència i Nanotecnologia) ; López-Ortega, Alberto (CIC nanoGUNE) ; Estrader, Marta (Institut Català de Nanociència i Nanotecnologia) ; Peral Alonso, Inmaculada (ALBA Laboratori de Llum de Sincrotró) ; Turrillas, Xabier (ALBA Laboratori de Llum de Sincrotró) ; Nogués, Josep (Institut Català de Nanociència i Nanotecnologia)
Understanding the microstructure in heterostructured nanoparticles is crucial to harnessing their properties. Although microscopy is ideal for this purpose, it allows for the analysis of only a few nanoparticles. [...]
2018 - 10.1002/smll.201800804
Small, Vol. 14, Issue 30 (July 2018) , art. 1800804  
9.
9 p, 605.3 KB 3D Visualization of the Iron Oxidation State in FeO/Fe3O4 Core-Shell Nanocubes from Electron Energy Loss Tomography / Torruella, Pau (Universitat de Barcelona. Departament d'Electrònica) ; Arenal, Raúl (Fundación ARAID) ; Peña, Francisco de la (University of Cambridge. Department of Materials Science and Metallurgy) ; Saghi, Zineb (Commissariat à l'Énergie Atomique et aux Énergies Alternatives (França)) ; Yedra Cardona, Lluís (Universitat de Barcelona. Departament d'Electrònica) ; Eljarrat Ascunce, Alberto (Universitat de Barcelona. Departament d'Electrònica) ; López Conesa, Lluís (Universitat de Barcelona. Departament d'Electrònica) ; Estrader, Marta (Laboratoire de Physique et Chimie des Nano-objects) ; López-Ortega, Alberto (Università degli Studi di Firenze) ; Salazar Álvarez, Germán (Stockholm University) ; Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ; Ducati, Caterina (University of Cambridge. Department of Materials Science and Metallurgy) ; Midgley, Paul A. (University of Cambridge. Department of Materials Science and Metallurgy) ; Peiro, Francesca (Universitat de Barcelona. Departament d'Electrònica) ; Estrade, Sonia (Universitat de Barcelona. Departament d'Electrònica)
The physicochemical properties used in numerous advanced nanostructured devices are directly controlled by the oxidation states of their constituents. In this work we combine electron energy-loss spectroscopy, blind source separation, and computed tomography to reconstruct in three dimensions the distribution of Fe and Fe ions in a FeO/FeO core/shell cube-shaped nanoparticle with nanometric resolution. [...]
2016 - 10.1021/acs.nanolett.6b01922
Nano letters, Vol. 16, Issue 8 (August 2016) , p. 5068-5073  
10.
10 p, 651.8 KB Direct evidence for an interdiffused intermediate layer in bi-magnetic core-shell nanoparticles / Juhin, Amélie (Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC)) ; López-Ortega, Alberto (Università Degli Studi di Firenze) ; Sikora, Marcin (AGH University of Science and Technology) ; Carvallo, Claire (Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC)) ; Estrader, Marta (Institut Català de Nanociència i Nanotecnologia) ; Estrade, Sonia (Universitat de Barcelona) ; Peiro, Francesca (Universitat de Barcelona) ; Baró, M. D.. (Universitat Autònoma de Barcelona. Departament de Física) ; Sainctavit, Philippe (Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie (IMPMC)) ; Glatzel, Pieter (European Synchrotron Radiation Facility) ; Nogués, Josep (Institut Català de Nanociència i Nanotecnologia)
Core-shell nanoparticles attract continuously growing interest due to their numerous applications, which are driven by the possibility of tuning their functionalities by adjusting structural and morphological parameters. [...]
2014 - 10.1039/c4nr02886d
Nanoscale, Vol. 6, Issue 20 (October 2014) , p. 11911-11920  

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