Results overview: Found 5 records in 0.02 seconds.
Articles, 5 records found
Articles 5 records found  
1.
5 p, 1.2 MB Controlling vortex chirality and polarity by geometry in magnetic nanodots / Agramunt Puig, Sebastià (Universitat Autònoma de Barcelona. Departament de Física) ; Valle Benedí, Nuria del (Universitat Autònoma de Barcelona. Departament de Física) ; Navau Ros, Carles (Universitat Autònoma de Barcelona. Departament de Física) ; Sánchez Moreno, Álvaro (Universitat Autònoma de Barcelona. Departament de Física)
The independent control of both vortex chirality and polarity is a significant challenge in magnetic devices based on nano-sized magnetic vortex structures. By micromagnetic simulations here, we show that in soft ferromagnetic nanodots with an adequate modulated thickness, the desired combination of chirality and polarity can be achieved just by changing the direction of the in-plane applied magnetic field. [...]
2014 - 10.1063/1.4861423
Applied physics letters, Vol. 104 (2014) , p. 12407  
2.
10 p, 1.4 MB Analysis of the split ring resonator (SRR) antenna applied to passive UHF-RFID tag design / Zuffanelli, Simone (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; Zamora González, Gerard (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; Aguilà Moliner, Pau (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; Paredes Marco, Ferran (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; Martín, Ferran, (Martín Antolín) (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; Bonache Albacete, Jordi (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica)
An electrically small planar passive UHF-RFID tag based on an edge-coupled split ring resonator (EC-SRR) antenna is presented in this work. In order to explore the potentiality and limitations of the SRR antenna and to aid the tag design, an analytical study of the SRR radiation properties at its fundamental resonance is presented for the first time. [...]
2016 - 10.1109/TAP.2015.2513084
IEEE Transactions on antennas and propagation, Vol. 64, Issue 3 (March 2016) , p. 856-864  
3.
4 p, 491.6 KB Magnetization reversal in long chains of submicrometric Co dots / Martín, J. I. (University of California, San Diego. Department of Physics) ; Nogués i Sanmiquel, Josep (University of California–San Diego. Physics Department) ; Schuller, Ivan K. (University of California, San Diego. Department of Physics) ; Van Bael, M. J. (Katholieke Universiteit Leuven. Laboratorium voor Vaste–Stoffysica en Magnetisme) ; Temst, K. (Katholieke Universiteit Leuven. Laboratorium voor Vaste–Stoffysica en Magnetisme) ; Van Haesendonck, C. (Katholieke Universiteit Leuven. Laboratorium voor Vaste–Stoffysica en Magnetisme) ; Moshchalkov, V. V. (Katholieke Universiteit Leuven. Laboratorium voor Vaste–Stoffysica en Magnetisme) ; Bruynseraede, Y. (Katholieke Universiteit Leuven. Laboratorium voor Vaste–Stoffysica en Magnetisme) ; American Physical Society
Long chains of 400 nm diam Co dots prepared by combined electron-beam lithography exhibit interesting magnetotransport properties. The magnetoresistance of the chains of dots is markedly different from single Co films, indicating a strongly modified magnetization reversal process. [...]
1998 - 10.1063/1.120702
Applied Physics Letters, Vol. 72, Issue 2 (January 1998) , p. 255-257  
4.
4 p, 293.8 KB Giant and time-dependent magnetocaloric effect in high-spin molecular magnets / Torres Canals, Francisco (Universitat Autònoma de Barcelona. Departament d'Enginyeria Electrònica) ; Hernández, J. M. (Universitat de Barcelona. Departamento Fı́sica Fonamental) ; Bohigas i Janoher, Xavier (Universitat Politècnica de Catalunya. Departament Física i Enginyeria Nuclear) ; Tejada, J. (Universitat de Barcelona. Departament Física Fonamental) ; American Physical Society
We have measured and calculated the magnetocaloric effect in macroscopic samples of oriented high-spin molecular clusters like Mn12 and Fe8 as a function of the temperature and both the intensity and the sweeping rate of the applied magnetic field. [...]
2000 - 10.1063/1.1325393
Applied Physics Letters, Vol. 77, Num. 20 (September 2000) , p. 3248-3250  
5.
4 p, 452.8 KB Enhanced exchange bias effects in a nanopatterned system consisting of two perpendicularly coupled ferromagnets / Bollero, A. (SPINTEC (Spin Electronics Research)) ; Dieny, B. (SPINTEC (Spin Electronics Research)) ; Sort Viñas, Jordi (Institució Catalana de Recerca i Estudis Avançats) ; Buchanan, K. S. (Argonne National Laboratory. Materials Science Division) ; Landis, S. (LETI/D2NT, CEA (Grenoble, França)) ; Nogués i Sanmiquel, Josep (Institut Català de Nanociència i Nanotecnologia) ; American Physical Society
The effect of patterning on the shift of the hysteresis loop HE and coercivityHC in a system composed of two perpendicularly exchange-coupled ferromagnets (NiFe sputtered onto a [Pt/Co] multilayer) is investigated in long stripes and square dots. [...]
2008 - 10.1063/1.2833124
Applied Physics Letters, Vol. 92, Issue 2 (January 2008) , p. 022508/1-022508/3  

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