Variation of magnetic and transport properties in magnetoresistive oxides La-Ln-Pb-Mn-O (Ln = Pr, Nd, Dy, and Y)

San Lin Young, Lance Horng, Hone Zern Chen, Jen Bin Shi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper presents an investigation on the magnetic and transport properties of perovskite oxides, La0.7 - xLnxPb 0.3MnO3 (Ln = Pr, Nd, Dy, and Y) in this study. The replacement of La by Pr, Nd, Dy, or Y results in a variation of the magnetization process and magnetoresistance. This fact is in agreement with the smaller ionic radii of Pr, Nd, Dy, and Y ions in contrast to La ion and the difference of electronic configuration and effective moment. The saturation magnetization MS increases as the Pr or Nd content increases while MS decreases as the Y content increases. Moreover, the saturation magnetization MS increases and then decreases as the Dy content increases. These results can be explained in terms of the competition between the increase of ferromagnetically interacting spins due to the introduction of magnetic Pr, Nd, or Dy ions with f-shell electrons and suppression of ferromagnetism due to structure tuning induced by the small ionic radius of the interpolated cation into the La site. The enhancement of magnetoresistance ratio as well as the increase of resistivity is observed for all systems. The result of double-peaks temperature-dependence resistivity for Dy and Y content systems is different from the result of the rest systems. The variation of electrical property is induced by the grain boundary effect.

Original languageEnglish
Pages (from-to)2754-2756
Number of pages3
JournalIEEE Transactions on Magnetics
Volume41
Issue number10
DOIs
Publication statusPublished - 2005 Oct 1

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Transport properties
Oxides
Magnetic properties
transport properties
Magnetoresistance
Saturation magnetization
Ions
magnetic properties
oxides
magnetization
Ferromagnetism
saturation
Perovskite
ions
electrical resistivity
radii
Cations
Magnetization
Grain boundaries
Electric properties

All Science Journal Classification (ASJC) codes

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

Cite this

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title = "Variation of magnetic and transport properties in magnetoresistive oxides La-Ln-Pb-Mn-O (Ln = Pr, Nd, Dy, and Y)",
abstract = "This paper presents an investigation on the magnetic and transport properties of perovskite oxides, La0.7 - xLnxPb 0.3MnO3 (Ln = Pr, Nd, Dy, and Y) in this study. The replacement of La by Pr, Nd, Dy, or Y results in a variation of the magnetization process and magnetoresistance. This fact is in agreement with the smaller ionic radii of Pr, Nd, Dy, and Y ions in contrast to La ion and the difference of electronic configuration and effective moment. The saturation magnetization MS increases as the Pr or Nd content increases while MS decreases as the Y content increases. Moreover, the saturation magnetization MS increases and then decreases as the Dy content increases. These results can be explained in terms of the competition between the increase of ferromagnetically interacting spins due to the introduction of magnetic Pr, Nd, or Dy ions with f-shell electrons and suppression of ferromagnetism due to structure tuning induced by the small ionic radius of the interpolated cation into the La site. The enhancement of magnetoresistance ratio as well as the increase of resistivity is observed for all systems. The result of double-peaks temperature-dependence resistivity for Dy and Y content systems is different from the result of the rest systems. The variation of electrical property is induced by the grain boundary effect.",
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Variation of magnetic and transport properties in magnetoresistive oxides La-Ln-Pb-Mn-O (Ln = Pr, Nd, Dy, and Y). / Young, San Lin; Horng, Lance; Chen, Hone Zern; Shi, Jen Bin.

In: IEEE Transactions on Magnetics, Vol. 41, No. 10, 01.10.2005, p. 2754-2756.

Research output: Contribution to journalArticle

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