1 J.M. García et al., “Magnetic behavior of an array of cobalt nanowires”, J. Appl. Phys. 85 (1999) 5480. J.M. García et al., “Characterization of cobalt nanowires by means of force microscopy”, IEEE Trans. Magn. 36 (2000) 2981.
2 J. P. Sinnecker et al., “Frequency dependence of the magnetoimpedance in amorphous CoP electrodeposited layers”, J. Appl. Phys. 87 (2000) 4825. J. M. García et al., “Determination of closure domains penetration in electrodeposited microtubes by combined magnetic force microscopy and giant magneto-impedance techniques”, J. Appl. Phys. 89 (2001) 3888.
3 J.M. García et al., “Quantitative interpretation of magnetic force microscopy images from soft patterned elements”, Appl. Phys. Lett. 79 (2001) 656. J.M. García et al., “MFM imaging of nanowires and elongated patterned elements”, J. Magn. Magn. Mat 249 (2002) 163.
4 J.M. García-Martín et al. “Imaging magnetic vortices by magnetic force microscopy: experiments and modelling”, J. Phys. D: Appl. Phys. 37 (2004) 965.
5 A. Thiaville et al. “Micromagnetic study of Bloch-point-mediated vortex core reversal”, Phys. Rev. B 67 (2003) 094410.
6 J.L. Costa-Krämer et al., “Structure and magnetism of single phase epitaxial ?’-Fe4N”, Phys. Rev. B 69 (2004) 144402. C. Martínez Boubeta et al. “Coverage effects on the magnetism of Fe/MgO(001) ultrathin films”, Phys. Rev. B 71 (2005) 0144407.
7 M. Jaafar et al., “Magnetic domain structure of nanohole arrays in Ni films”, J. Appl. Phys. 101 (2007) 09F513.
8 J. Camarero et al., “Origin of the asymmetric magnetization reversal behavior in exchange-biased systems: competing anisotropies”, Phys. Rev. Lett. 95 (2005) 057204.
9 C. Clavero et al., “Temperature and thickness dependence at the onset of perpendicular magnetic anisotropy in FePd thin films sputtered on MgO(001)”, Phys. Rev. B 73 (2006) 174405. C. Clavero et al., “Perpendicular magnetic anisotropy in chemically disordered FePd–FeV (100) alloy thin films”, J. Appl. Phys. 99 (2006) 073903.
10 D P Kumah et al., “Optimizing the planar structure of (111) Au/Co/Au trilayers”,J. Phys. D:Appl. Phys., 40 (2007) 2699.
11 A. Thiaville, J. Miltat, and J. M. García, “Magnetic force microscopy: images of nanostructures and contrast modeling”, Magnetic microscopy of nanostructures, H. P. Oepen and H. Hopster (Eds.), Springer-Verlag, Berlin-Heidelberg-New York, ISBN 3-540-40186-5, p. 225-251 (2005).
Born in 1972, José Miguel García-Martín studied at the Universidad Complutense de Madrid (Spain) and obtained his PhD Thesis in 1999, Prof. Manuel Vázquez (ICMM-CSIC) being the supervisor. They studied advanced magnetic materials that were electrolytically prepared such as cobalt nanowires and cobalt-phosphorus microtubes. The cobat nanowires (diameter: 70-200 nm) exhibited a multidomain state and their magnetic properties arose from the competition between the shape anisotropy and the interactions among neighboring wires1. The cobalt-phosphorus microtubes showed radial anisotropy with closure domains and exhibited giant magnetoimpedance (GMI) even for magnetic fields as high as hundreds of Oe, which made them interesting for sensor applications2.
Afterwards he moved to the Laboratoire de Physique des Solides (Université Paris-Sud & CNRS) in Paris (France) for a post doctoral stay (2000–2002) with an individual Marie Curie fellowship, where he worked with Prof. Jacques Miltat and Dr. André Thiaville in magnetic force microscopy (MFM) and micromagnetic simulations. They showed that the tip-induced perturbations in MFM imaging could be quantitatively explained and, properly used, helped to reveal the magnetization direction in soft magnetic samples3. They used cobalt nanowires as MFM tips for imaging ferromagnetic submicrometer dots in a vortex state4 and showed that the vortex core reversal was mediated by a singularity of the magnetization field, namely a Bloch-point5.
Back to Spain in 2003, Dr. García-Martín started working at the Magnetic Nanostructures research line at the Instituto de Microelectrónica de Madrid (IMM-CSIC). His main research activities have been focused on:
-Correlation among structure, morphology and magnetism in epitaxial thin films6 and nanohole arrays7.
-Asymmetric magnetization reversal in exchange-biased systems8.
-Magnetic nanostructures with perpendicular anisotropy9.
-Noble metal-ferromagnetic metal nanostructures with applications in magnetoplasmonics10.
José Miguel García-Martín is an expert in scanning probe microscopy (SPM) techniques, especially AFM and MFM, and in magnetic characterization and modeling. He has also a wide experience in sample growth using electrochemical methods and sputter deposition.
He has published more than 30 papers in international refereed journals (about 400 citations to his works), has presented a similar number of communications to international conferences, and has co-written one book chapter11.