Evidence of the magnetoimpedance effect up to microwave frequencies in polycrystalline La0.7Sr0.3MnO3 films

Stanescu, D.; Xavier, P.; Richard, J.; Dubourdieu, C.
April 2006
Journal of Applied Physics;4/1/2006, Vol. 99 Issue 7, p073707
Academic Journal
We present broadband measurements of the magnetoimpedance of polycrystalline La0.7Sr0.3MnO3 films grown on silicon as a function of three parameters: (i) the frequency (0–1 GHz), (ii) the temperature (4–275 K), and (iii) the applied magnetic field (0–6 T). In this paper it is evidenced that the magnetoresistive effect still exists up to 1 GHz. The impedance variation with the frequency is well modeled considering that the polycrystalline film is equivalent to a random resistive-capacitive network. Similar behaviors of the impedance versus temperature variation are observed in dc and high frequency range.


Related Articles

  • Comment on ‘Resistivity Minimum Behavior and Weak Magnetic Disorder Characteristics in La2/3Ca1/3MnO3 Manganites’. Rozenberg, E. // Journal of Superconductivity & Novel Magnetism;Feb2010, Vol. 23 Issue 2, p183 

    In a recent paper (Chen et al. in J. Supercond. Nov. Magn. 22:465, ) Zhenping Chen et al. reported measurements of the electrical resistivity ( ρ) and magnetization versus temperature ( T) and magnetic field ( H) on polycrystalline manganite compound La2/3Ca1/3MnO3. In particular, the ρ(...

  • Angular dependence of the magnetoresistance in Y3/4Lu1/4Ba2Cu3O7-CuO composites at 77 K. Balaev, D. A.; Prus, A. G.; Shaikhutdinov, K. A.; Petrov, M. I. // Technical Physics Letters;Aug2006, Vol. 32 Issue 8, p677 

    The angular dependence of the magnetoresistance of polycrystalline Y3/4Lu1/4Ba2Cu3O7-CuO composites has been studied. These composites represent a system of Josephson junctions and exhibit a large magnetoresistance at 77 K. In addition to the isotropic component, there is the angle-dependent...

  • Disorder enhanced intrinsic electroresistance in Sm0.60Sr0.40Mn1-xFexO3. Mahmud, S. T.; Saber, M. M.; Alagoz, H. S.; Biggart, K.; Bouveyron, R.; Khan, Mahmud; Jung, J.; Chow, K. H. // Applied Physics Letters;6/4/2012, Vol. 100 Issue 23, p232406 

    The intrinsic electroresistance (ER) of polycrystalline Sm0.60Sr0.40Mn1-xFexO3 (0 ≤ x ≤ 0.02) have been investigated by magnetotransport measurements. It is found that the ER increases with x while it is suppressed by a magnetic field. These observations imply that the ER increases...

  • Improvement of the intergranular pinning energy in uniaxially compacting (Bi-Pb)2Sr2Ca2Cu3O10+δ ceramic samples. Govea-Alcaide, E.; García-Fornaris, I.; Muné, P.; Jardim, R. F. // European Physical Journal B -- Condensed Matter;Aug2007, Vol. 58 Issue 4, p373 

    Measurements of the electrical resistivity as a function of temperature, ρ(T), for different values of applied magnetic field, Ba (0 ≤ Ba ≤ 50 mT), were performed in polycrystalline samples of Bi1.65Pb0.35Sr2Ca2 Cu3O10+δ subjected to different uniaxial compacting pressure...

  • Evidence of Two-Dimensional Weak Localization in Polycrystalline SnO2 Films by High Field Magnetoconductance Study. Dauzhenka, T. A.; Ksenevich, V. K.; Bashmakov, I. A.; Galibert, J. // Journal of Low Temperature Physics;Apr2010, Vol. 159 Issue 1/2, p212 

    We focus in this article on high field magnetoconductance results obtained on SnO2 polycrystalline (cassiterite) films. The high field magnetoconductance is found to be in agreement with the magnetoconductance universal behavior due to weak localization in two dimensions as suggested by Zduniak...

  • Investigation of the Intergrain Junctions of Polycrystalline HTSC in Rotating Weak ac Magnetic. Metskhvarishvili, Ioseb; Metskhvarishvili, Magda; Khorbaladze, Luiza; Elizbarashvili, Mikheil; Miminoshvili, Zaur; Nekrasova, Larisa // Turkish Journal of Physics;2005, Vol. 29 Issue 1, p9 

    YBa2Cu3Oy polycrystalline superconductor has been studied in weak rotating ac magnetic fields with existence of constant dc field. Measurements were carried out in various temperature intervals, and in various variable and constant fields. Results of our experiments are in good agreement with...

  • Domain wall displacement in Py square ring for single nanometric magnetic bead detection. Vavassori, P.; Metlushko, V.; Ilic, B.; Gobbi, M.; Donolato, M.; Cantoni, M.; Bertacco, R. // Applied Physics Letters;11/17/2008, Vol. 93 Issue 20, p203502 

    An approach based on domain wall displacement in confined ferromagnetic nanostructures for attracting and sensing a single nanometric magnetic particle is presented. We modeled and experimentally demonstrated the viability of the approach using an anisotropic magnetoresistance device made by a...

  • Ferromagnetic and Charge-Ordered Phases in (Nd, Na)-Mn-O Compounds. Samantaray, B.; Ravi, S. // Journal of Superconductivity & Novel Magnetism;Feb2011, Vol. 24 Issue 1/2, p809 

    Polycrystalline NdNaMnO ( $x=0.05\mbox{--} 0.20$) compounds were prepared in single-phase form with a Pbnm space group. Paramagnetic to ferromagnetic transitions were observed up to a doping concentration of 15% with a maximum T of 113 K. The x=0.20 sample exhibits a charge order transition at...

  • Emissivity — a remote sensor of giant magnetoresistance. Stirk, S. M.; Thompson, S. M.; Matthew, J. A. D. // Applied Physics Letters;3/7/2005, Vol. 86 Issue 10, p102505 

    The link between emissivity in the mid-to-far-infrared regime and electrical conductivity is used to probe magnetoresistance. A direct relationship between the change in radiated flux and giant magnetoresistance is confirmed by experiment. The potential for spatially resolved measurements is...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics