Multifunctional Magnetic Materials and Nanostructures

For more details about this research see the webpage of IFIMUP or contact prof. João Pedro Araújo (jearaujo[AT]

Magnetic thin films and nanostructures

  • Spintronic devices
    • Transport and Tunneling mechanisms in thin magnetic tunnel junctions
    • Resonant tunneling and quantum well states in tunnel junctions
    • Magnetic and resistive switching effects in nanostructured multilayers
  • Nanoporous Alumina templates
    • Development and physical studies of self-assembled nanostructured arrays
    • New multifunctional high aspect ratio nanoparticles for biotechnological applications

Representative Publications:
  • On the Stability Enhancement of Cuprous Oxide Water Splitting Photocathodes by Low Temperature Steam Annealing, João Azevedo et al., accepted in Energy & Environmental Science, accepted. |www|
  • The role of the Ti surface roughness in the selfordering of TiO2 nanotubes: a detailed study of the growth mechanism, Arlete Apolinário et al, Journal of Materials Chemistry A, 2, 9067 (2014). |www|
  • Ni growth inside ordered arrays of alumina nanopores: Enhancing the deposition rate, M. P. Proenca et al. Electrochim. Acta 72, 215 (2012). |www|
  • Resonant Tunneling through Electronic Trapping States in Thin MgO Magnetic Junctions J. M. Teixeira et al., Phys. Rev. Lett, 106, 196601 (2011). |www|

Multifunctional Magnetic Materials

  • Magnetocaloric and magnetostrictive materials
  • Multiferroic materials and other complex oxides
  • Diluted magnetic semiconductors produced by ion implantation

Representative Publications:
  • Phase Competitions behind the Giant Magnetic Entropy Variation: Gd5Si2Ge2 and Tb5Si2Ge2 Case Studies, A. L. Pires et al., Entropy 16, 3813 (2014). |www|
  • Tailored design of CoxMn1-xFe2O4 nanoferrites: a new route for dual control of size and magnetic properties, C. Fernandes et al., J. Mat. Chem. C 2, 5818 (2014). |www|
  • On the Curie temperature dependency of the magnetocaloric effect, J. H. Belo et al. Appl. Phys. Lett. 100, 242407 (2012). |www|
  • Solid state magnetic refrigerator, D. J. Silva et al., Appl. Energy 93, 570 (2012). |www|

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