Navegação Ciências Exatas e da Terra por Assunto "Resistividade elétrica"

Resultados 1-10 de 10

    • Bias dependence of magnetoresistance in Fe-Al/sub 2/O/sub 3/ granular thin films 

      Boff, Marco Aurelio Silveira; Geshev, Julian Penkov; Schmidt, Joao Edgar; Flores, Wladimir Hernandez; Antunes, Arlei Borba; Gusmao, Miguel Angelo Cavalheiro; Teixeira, Sergio Ribeiro (2002) [Artigo de periódico]
      This paper reports on the magnetotransport behavior of Fe–Al2O3 granular thin films when the injected dc current is varied. The electric resistance as a function of temperature, magnetoresistance, and the current vs applied ...

    • Change of the electrical properties in Fe-Al/sub 2/O/sub 3/ granular films 

      Boff, Marco Aurelio Silveira; Teixeira, Sergio Ribeiro; Schmidt, Joao Edgar; Antunes, Arlei Borba (2004) [Artigo de periódico]
      A systematic study of the electrical resistance as a function of the temperature was performed in Fe-Al2O3 granular thin films. Our findings revealed a nonlinear dependence of the current versus voltage in the low field ...

    • Effect of interface intermixing on giant magnetoresistance in NiFe/Cu and Co/NiFe/Co/Cu multilayers 

      Nagamine, Luiz Carlos Camargo Miranda; Biondo Filho, Armando; Pereira, Luis Gustavo; Silva, Alexandre Mello de Paula; Schmidt, Joao Edgar; Chimendes, Tiago Walescko; Cunha, Joao Batista Marimon da; Baggio-Saitovitch, E. (2003) [Artigo de periódico]
      This article reports on the important influence of the spontaneously built-in paramagnetic interfacial layers on the magnetic and magnetoresistive properties of NiFe/Cu and Co/NiFe/Co/Cu multilayers grown by magnetron ...

    • Electrical isolation of GaN by MeV ion irradiation 

      Boudinov, Henri Ivanov; Kucheyev, Sergei O.; Williams, J.S.; Jagadish, Chenupati; Li, Gang (2001) [Artigo de periódico]
      The evolution of sheet resistance of n-type GaN epilayers exposed to irradiation with MeV H, Li, C, and O ions is studied in situ. Results show that the threshold dose necessary for complete isolation linearly depends on ...

    • Electrical isolation of n-type and p-type InP layers by proton bombardment 

      Boudinov, Henri Ivanov; Tan, Hoe H.; Jagadish, Chenupati (2001) [Artigo de periódico]
      The evolution of the sheet resistance (Rs) of n-type and p-type conductive InP layers during proton irradiation and the stability of the formed isolation during postirradiation annealing were investigated. It was found ...

    • Electrical magnetotransport properties in RCo12B6 compounds (R = Y, Gd, and Ho) 

      Mesquita, Fabiano; Magalhães, Sergio Garcia; Pureur Neto, Paulo; Diop, Léopold Vincent Birane; Isnard, Olivier (2020) [Artigo de periódico]
      Remarkable electronic transport and magnetotransport properties are found in the intermetallic compounds RCo12B6 (R=Y, Ho, and Gd). Detailed resistivity, magnetoresistance, and Hall effect measurements are reported in the ...

    • Electrical resistivity of acceptor carbon in GaAs 

      Silva, Antonio Ferreira da; Pepe, I.; Sernelius, Bo E.; Persson, C.; Ahuja, R.; Souza, Joel Pereira de; Suzuki, Yoko; Yang, Y. (2004) [Artigo de periódico]
      The electrical resistivity was investigated from room temperature down to 1.7 K for the shallow acceptor carbon in GaAs prepared by ion implantation with impurity concentrations between 1017 and 1019 cm-³. Good agreement ...

    • Magnetotransport properties in the magnetic phase of BaFe2−xTxAs2 (T = Co,Ni) : a magnetic excitations approach 

      Peña Pacheco, Jully Paola; Piva, M. M.; Rosa, P. F. S.; Pagliuso, P. G.; Adriano, C.; Grant, Ted W.; Fisk, Zachary; Baggio-Saitovitch, E.; Pureur Neto, Paulo (2018) [Artigo de periódico]
      Because of their complex Fermi surfaces, the identification of the physical phenomena contributing to electronic scattering in the Fe-based superconductors is a difficult task. Here, we report on the electrical resistivity, ...

    • Mechanical properties of highly oriented FeSe0.5Te0.5 superconductor 

      Pimentel Junior, Jorge Luiz; Pureur Neto, Paulo; Lopes, Cristiano Santos; Serbena, Francisco Carlos; Foerster, Carlos Eugenio; Silva, Simone Aparecida da; Jurelo, Alcione Roberto; Chinelatto, Adilson Luiz (2012) [Artigo de periódico]
      We have synthesized highly oriented samples of the superconducting compound FeSe0.5Te0.5 and investigated its mechanical properties. These samples were characterized by scanning electron microscopy (SEM) with energy-dispersive ...

    • Ultrafast trapping times in ion implanted InP 

      Carmody, Christine; Boudinov, Henri Ivanov; Tan, Hoe H.; Jagadish, Chenupati; Lederer, Max J.; Koley, Vesselin; Luther-Davies, B.; Dao, L.V.; Gal, Michael (2002) [Artigo de periódico]
      As+ and P+ implantation was performed on semi-insulating (SI) and p-type InP samples for the purpose of creating a material suitable for ultrafast optoelectronic applications. SI InP samples were implanted with a dose of ...