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Author (up) Benfica, J.; Green, B.; Porcher, B.C.; Bolzani Poehls, L.; Vargas, F.; Medina, N.H.; Added, N.; de Aguiar, V.A.P.; Macchione, E.L.A.; Aguirre, F.; Silveira, M.A.G.; Pérez, M.; Sofo Haro, M.; Sidelnik, I.; Blostein, J.J.; Lipovetzky, J.; Bezerra, E.A. openurl 
  Title Analysis of SRAM-Based FPGA SEU Sensitivity to Combined EMI and TID-Imprinted Effects Type Journal Article
  Year 2016 Publication IEEE Transactions on Nuclear Science Abbreviated Journal  
  Volume 63 Issue Pages 1294  
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  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 753  
Permanent link to this record
 
 
Author (up) Cejas Bolecek, N.R.; Kolton, A.B.; Konczykowski, M.; Pastoriza, H.; Dominguez, D.; Fasano, Y. url  doi
openurl 
  Title Vortex matter freezing in Bi2Sr2CaCu28 samples with a very dense distribution of columnar defects Type Journal Article
  Year 2016 Publication Physical Review B Abbreviated Journal Phys. Rev. B  
  Volume 93 Issue 5 Pages 054505  
  Keywords  
  Abstract We show that the dynamical freezing of vortex structures nucleated at diluted densities in Bi2Sr2CaCu2O8 samples with a dense distribution of columnar defects, B∼10−2BΦ with BΦ=5kG, results in configurations with liquidlike correlations. We propose a freezing model considering a relaxation dynamics dominated by double-kink excitations driven by the local stresses obtained directly from experimental images. With this model we estimate the relaxation barrier and the freezing temperature. We argue that the low-field frozen vortex structures nucleated in a dense distribution of columnar defects thus correspond to an out-of-equilibrium nonentangled liquid with strongly reduced mobility rather than to a snapshot of a metastable state with divergent activation barriers as, for instance, expected for the Bose-glass phase at equilibrium.  
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  Publisher American Physical Society Place of Publication Editor  
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  Notes Approved no  
  Call Number BT @ pedrazp @ 10.1103/PhysRevB.93.054505 Serial 738  
Permanent link to this record
 
 
Author (up) Correa, V.F.; Betancourth, D.; Sereni, J.G.; Caroca-Canales, N.; Geibel, C. url  doi
openurl 
  Title Remarkable magnetostructural coupling around the magnetic transition in CeCo0.85Fe0.15Si Type Journal Article
  Year 2016 Publication Journal of Physics: Condensed Matter Abbreviated Journal J. Phys.: Condens. Matter  
  Volume 28 Issue 34 Pages 346003  
  Keywords magnetostriction, cerium compounds, magnetism  
  Abstract We report a detailed study of the magnetic properties of CeCo0.85Fe0.15Si under high magnetic

fields (up to 16 Tesla) measuring different physical properties such as specific heat, magnetization,

electrical resistivity, thermal expansion and magnetostriction. CeCo0.85Fe0.15Si becomes

antiferromagnetic at TN 6.7 K. However, a broad tail (onset at TX 13 K) in the specific heat

precedes that second order transition. This tail is also observed in the temperature derivative of

the resistivity. However, it is particularly noticeable in the thermal expansion coefficient where it

takes the form of a large bump centered at TX. A high magnetic field practically washes out that tail

in the resistivity. But surprisingly, the bump in the thermal expansion coefficient becomes a well

pronounced peak fully split from the magnetic transition at TN. Concurrently, the magnetoresistance

also switches from negative to positive above TN. The magnetostriction is considerable and

irreversible at low temperature ( (16T)4×10− L

L

4 at 2 K) when the magnetic interactions

dominate. A broad jump in the field dependence of the magnetostriction observed at low T may be

the signature of a weak ongoing metamagnetic transition. Taking altogether the results indicate the

importance of the lattice effects on the development of the magnetic order in these alloys.		  
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  Notes Approved no  
  Call Number BT @ victor.correa @ Serial 732  
Permanent link to this record
 
 
Author (up) del Corro, P. G.; Imboden, M.; Bishop, D. J.; Pastoriza, H. url  doi
openurl 
  Title Comb Drive Designs With Minimized Levitation Type Journal Article
  Year 2016 Publication Journal of Microelectromechanical Systems Abbreviated Journal Journal of Microelectromechanical Systems  
  Volume 25 Issue 6 Pages 1025-1032  
  Keywords driver circuits; electrostatic actuators; microfabrication; Mems; capacitive comb drive design; comb finger polarity; comb geometry optimization; control electrode; distance 3.6 mum; electric field; electrostatic actuation; levitation effect elimination; polyMUMP technology; vertical force suppression; voltage 80 V; Capacitance; Force; Levitation; Micromechanical devices; Mobile communication; Springs; Substrates; Mems; actuators; comb drives; levitation  
  Abstract This paper presents two capacitive comb drive

designs for electrostatic actuation of MEMS with the aim to

eliminate the levitation effect often observed in such systems.

By placing a shield over the comb drive fingers, it is possible

to balance the electric field and suppress vertical forces while

maintaining the desired lateral motion. By optimizing the comb

geometry, we demonstrate that our approach is able to reduce the

levitation by an order of magnitude and unwanted coupling of

motion from out-of-plane to in-plane by a factor of 7 compared

with standard comb architectures fabricated using PolyMUMPs

technology, without the need of alternating comb finger polarities

or additional control electrodes. Levitation was reduced to

160 nm, for 3.6-µm lateral displacement at a driving voltage

of 80 V.		  
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  Series Volume Series Issue Edition  
  ISSN 1057-7157 ISBN Medium  
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  Notes Approved no  
  Call Number BT @ hernan @ Serial 744  
Permanent link to this record
 
 
Author (up) Dellavale, D.; Roselló, J. M. openurl 
  Title Cross-frequency coupling and phase synchronization in nonlinear acoustics Type Journal Article
  Year 2016 Publication Proceedings of Meetings on Acoustics Abbreviated Journal  
  Volume 28 Issue Pages 055001  
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  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 755  
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Author (up) Domenichini, P., Condó, A. M., Haberkorn, N. openurl 
  Title Structural characterization of FeePd nanowires grown by electrodeposition using an acid electrolyte Type Journal Article
  Year 2016 Publication Materials Chemistry and Physics Abbreviated Journal  
  Volume 177 Issue Pages 164-170  
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  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 746  
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Author (up) Domenichini, P.; Condó, A.M.; Soldera, F.; Sirena, M.; Haberkorn, N. openurl 
  Title Influence of the microstructure on the resulting 18R martensitic transformation of polycrystalline Cu––Al––Zn thin films obtained by sputtering and reactive annealing Type Journal Article
  Year 2016 Publication Materials Characterization Abbreviated Journal  
  Volume 114 Issue Pages 289  
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  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 750  
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Author (up) Facio, J.I.; Betancourth, D.; Cejas Bolecek, N.R.; Jorge, G.A.; Pedrazzini, P.; Correa, V.F.; Cornaglia, P.S.; Vildosola, V.; García D.J. url  doi
openurl 
  Title Lattice specific heat for the RMIn5 (R=Gd, La,Y; M=Co, Rh) compounds: Non-magnetic contribution subtraction Type Journal Article
  Year 2016 Publication Journal of Magnetism and Magnetic Materials Abbreviated Journal J. Magn. Magn. Mater.  
  Volume 407 Issue Pages 406-4011  
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  Notes Approved no  
  Call Number BT @ victor.correa @ Serial 730  
Permanent link to this record
 
 
Author (up) Franco, D.G.; Sarmiento-Chavez, A.; Schenone, N.; Allcca, A.E.L.; Berisso, M.G.; Fasano, Y.; Guimpel, J. url  doi
openurl 
  Title Characterization of the Nb-B Superlattice System Type Journal Article
  Year 2016 Publication Physica C: Superconductivity and its Applications Abbreviated Journal  
  Volume 531 Issue Pages 93-97  
  Keywords Superlattice; Superconductivity; Transition Edge Sensors  
  Abstract Abstract

We study the growth, stacking and superconducting properties of Nb and B thin films and superlattices. The interest in these resides in their possible use in transition edge neutron sensors. The samples were grown by magnetron sputtering over Si (100) substrates. The X-ray diffraction patterns for all Nb containing samples show a Nb (110) preferential orientation. From the low-angle X-ray reflectivity we obtain information on the superlattice structure. The superconducting transition temperatures of the superlattices, obtained from the temperature dependence of the magnetization, are higher than those of single Nb films of similar thickness. The temperature dependence of the perpendicular and parallel upper critical fields indicate that the superlattices behave as an array of decoupled superconducting Nb layers.		  
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  Series Volume Series Issue Edition  
  ISSN 0921-4534 ISBN Medium  
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  Notes Approved no  
  Call Number BT @ jguimpel @ Serial 743  
Permanent link to this record
 
 
Author (up) Haberkorn, N.; Coulter, Y.; Condó, A.M.; Granell, P.; Golmar, F.; Ha, H.S.; Moon, S.H. openurl 
  Title Vortex creep and critical current densities Jc in a 2μm thick SmBa2Cu3O7−d coated conductor with mixed pinning centers grown by co-evaporation Type Journal Article
  Year 2016 Publication Superconductor Science and Technology Abbreviated Journal  
  Volume 29 Issue Pages 075011  
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  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 748  
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