Effects of Ni substitutions on the critical behaviors in Nd0.6Sr0.4Mn1−xNixO3 manganite

M. Kh Hamad*, Y. Maswadeh, Kh A. Ziq

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

We investigate the effect of Ni-substitution on the crystalline structure and the critical behavior of Nd0.6Sr0.4Mn1−xNixO3 (0.00 ≤ x ≤ 0.20) perovskite. X-ray diffraction patterns revealed that the major phase in all samples is the orthorhombic structure with space group Pnma. Rietveld refinement revealed a linear reduction in the lattice parameters along with monotonic reduction in the O2-Mn-O2 angel with increasing Ni concentration. The modified Arrott plots and the Kouvel-Fisher method have been used to analyze the magnetization isotherms near the paramagnetic to ferromagnetic (PM-FM) phase transition. The obtained critical exponents (β, γ and δ) revealed that the Ni-free sample is consistent with 3D-Heisenberg like behavior. However, upon Ni-substitution, the critical exponents exhibit a mean field like behavior. The reliability of the obtained critical exponent (β, γ, and δ) values have been confirmed by the universal scaling behavior of the isothermal magnetization near the transition temperature.

Original languageEnglish
Article number165609
JournalJournal of Magnetism and Magnetic Materials
Volume491
DOIs
StatePublished - 1 Dec 2019

Bibliographical note

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

  • Critical exponents
  • Ferromagnetic material
  • Kouvel-Fisher plot
  • Manganite
  • Modified Arrott plot

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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