Effect of mn-site doping with nickel on the electric and magnetic properties of Sm0.55Sr0.45MnO3 manganites

M. M. Abdelhadi*, K. A. Ziq

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We present the effect of Ni-ions doping on the magnetoresistance and magnetic properties of Sm0.55Sr0.45 Mn1xNixO3 in the temperature range 4.2–300 K and the magnetic field range 0–90 kOe, for 0 < x < 10%. The Ni-ion doping significantly reduces the metal-ferromagnetic to insulating-paramagnetic transition temperature (TC). The Sm0.55Sr0.45Mn1xNixO3 undergoes a transition from low-temperature ferromagnetic metallic state to high-temperature paramagnetic insulating-like state. Magnetic susceptibility measurements for samples with various Ni-concentrations showed a reduction in the paramagnetic transition temperature with increasing Ni-concentration. Moreover, the sharp peak in the susceptibility shown by the Ni-free samples has disappeared completely. The susceptibility becomes more round at 10% Ni, while for lower Ni-concentration it becomes flat, indicating almost pure ferromagnetic behavior. Magnetization isotherms measurements have also been performed for Ni-ions samples doped with up to 10%.With increasing Ni-doping, the irreversibility region in both M vs. T and M vs. H curves have decreased considerably, almost vanishing at 5% Ni. For 5% Ni and above, the FC and ZFC states basically coincide on top of each other, no spin-glass-like transition has been seen.

Original languageEnglish
Pages (from-to)1445-1450
Number of pages6
JournalJournal of Superconductivity and Novel Magnetism
Volume26
Issue number5
DOIs
StatePublished - May 2013

Bibliographical note

Publisher Copyright:
© Springer Science+Business Media New York 2012.

Keywords

  • CMR
  • Magnetic materials doping
  • Manganese oxides
  • Metal insulator transition

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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