Magnetotransport Properties in Epitaxial Exchange-Biased La2/3Ca1/3MnO3/La1/3Ca2/3MnO3 Superlattices

M. E. Gómez, G. Campillo, J. G. Ramírez, P. Prieto, A. Hoffmann, J. Guimpel, N. Haberkorn, A. Condo, F. Lovey

Research output: Contribution to journalArticlepeer-review


Superlattices of ferromagnetic (F) and antiferromagnetic (AF) oxide materials have attracted increased attention given the exchange bias or exchange anisotropy phenomenon. Research on magnetic oxide superlattices has focused toward the technological goals of increasing magnetoresistance in lower applied magnetic fields and more useful temperature ranges for various applications. Superlattices of F-LCMO and AF-LCMO layers were grown on (001)-oriented SrTiO3substrates. We studied the temperature dependence of magnetotransport properties for a series of [AF-LCMO (7.6 nm)/F-LCMO (tF)]nsuperlattices as a function of the ferromagnetically doped layer thickness, tF, while the antiferromagnetic (AF) layer thickness, taf, was kept constant. Magnetotransport measurements at different temperatures were done on a series of [AF(7.6 nm)/F(tF)]N superlattices. The ZFC resistance has a maximum at negative fields, for all multilayers, with descending fields (from 1 to — 1 kOe). In all samples a shift along the field axis of the FC loop with respect to that of the ZFC loop is observed. The Hexvalues determined from these displacements of the FC loops of the magnetoresistance loops increase when temperature decreases and its magnitude also depends on the ferromagnetic layer thickness.

Original languageEnglish (US)
Pages (from-to)2981-2983
Number of pages3
JournalIEEE Transactions on Magnetics
Issue number10
StatePublished - Oct 2006
Externally publishedYes


  • Exchange interactions
  • X-ray diffraction
  • deposition
  • interface magnetism
  • magnetic anisotropy
  • magnetic multilayers
  • magnetoresistance
  • sputter
  • transmission electron microscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering


Dive into the research topics of 'Magnetotransport Properties in Epitaxial Exchange-Biased La2/3Ca1/3MnO3/La1/3Ca2/3MnO3 Superlattices'. Together they form a unique fingerprint.

Cite this