IDEAS home Printed from https://ideas.repec.org/a/wsi/srlxxx/v17y2010i01ns0218625x10013667.html
   My bibliography  Save this article

ELECTRICAL TRANSPORT PROPERTIES AND MAGNETORESISTANCE OF(La0.7Ca0.3MnO3)1-x/(CuFe2O4)xCOMPOSITES

Author

Listed:
  • YOUNG JOO KIM

    (School of Nano and Advanced Materials Engineering, Changwon National University, Changwon, Korea)

  • SHALENDRA KUMAR

    (School of Nano and Advanced Materials Engineering, Changwon National University, Changwon, Korea)

  • YONG JUN SEO

    (School of Nano and Advanced Materials Engineering, Changwon National University, Changwon, Korea)

  • JIHO CHANG

    (Major of Semiconductor Physics, Korea Maritime University, Busan, Korea)

  • CHAN GYU LEE

    (School of Nano and Advanced Materials Engineering, Changwon National University, Changwon, Korea)

  • BON HEUN KOO

    (School of Nano and Advanced Materials Engineering, Changwon National University, Changwon, Korea)

Abstract

The(La0.7Ca0.3MnO3)1-x/(CuFe2O4)x(x = 0–0.15)composites were prepared by conventional solid state reaction method. We have investigated the structural, magnetic and electrical properties of(La0.7Ca0.3MnO3)1-x/(CuFe2O4)xcomposites using X-ray diffraction (XRD), scanning electron microscopy, field cooled DC magnetization and magnetoresistance (MR) measurements. The resistance measured as a function of temperature demonstrates that pure LCMO samples display metal to semiconductor transition. On the other hand, all the LCMO/CFO composites samples clearly present the electrical behavior of insulator/semiconductor. It indicates that resistivity of the samples increase systemically with the increase of CFO content. The MR was measured in the presence of 0.5 T field. At low temperatures, it is clearly observed that the MR effect is enhanced withx = 0.03of CFO composition. In summary, the spin-polarized tunneling and the spin-dependent scattering may be helpful to the improved low-field magnetoresistance (LFMR) effect. These phenomena can be explained by the segregation of a new phase related to CFO at the grain boundaries or surfaces of the LCMO grains.

Suggested Citation

  • Young Joo Kim & Shalendra Kumar & Yong Jun Seo & Jiho Chang & Chan Gyu Lee & Bon Heun Koo, 2010. "ELECTRICAL TRANSPORT PROPERTIES AND MAGNETORESISTANCE OF(La0.7Ca0.3MnO3)1-x/(CuFe2O4)xCOMPOSITES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 17(01), pages 33-38.
    • Handle: RePEc:wsi:srlxxx:v:17:y:2010:i:01:n:s0218625x10013667
    DOI: 10.1142/S0218625X10013667
    as

    Download full text from publisher

    File URL: http://www.worldscientific.com/doi/abs/10.1142/S0218625X10013667
    Download Restriction: Access to full text is restricted to subscribers
    File URL: https://libkey.io/10.1142/S0218625X10013667?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:wsi:srlxxx:v:17:y:2010:i:01:n:s0218625x10013667. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Tai Tone Lim (email available below). General contact details of provider: http://www.worldscinet.com/srl/srl.shtml .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.