Synthesis characterization of magnetic properties in La0.7-x Lnx Pb0.3 MnO3 (Ln = Pr, Nd, Gd, Dy, Sm and Y) perovskite compounds

M. C. Kao, H. Z. Chen, S. L. Young, C. Y. Shen, Lance Horng

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The influence of La substitution by rare-earth elements on the magnetization behaviors of perovskite oxides, La0.7-x Lnx Pb0.3 MnO3 (Ln = Pr, Nd, Gd, Dy, Sm and Y), is investigated. The replacement of La ion by Pr, Nd, Gd, Dy, Sm or Y results in a considerable decrease in the ferromagnetic ordering temperature TC and clearly irreversible behavior in the FC-ZFC curves showing a short-range spin order phase. The fact is in agreement with the smaller ionic radii of Pr, Nd, Gd, Dy, Sm and Y ions in contrast to La ion and the corresponding larger distortion of perovskite structures. The saturation magnetization MS increases as Pr or Nd content increases while MS decreases as Sm or Y content increases. Moreover, the saturation magnetization MS increases and then decreases as Gd or 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 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.

Original languageEnglish
Pages (from-to)18-22
Number of pages5
JournalJournal of Alloys and Compounds
Volume440
Issue number1-2
DOIs
Publication statusPublished - 2007 Aug 16

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Perovskite
Magnetic properties
Ions
Saturation magnetization
Ferromagnetism
Rare earth elements
Oxides
Cations
Magnetization
Substitution reactions
Tuning
Positive ions
perovskite
Electrons
Temperature

All Science Journal Classification (ASJC) codes

  • Metals and Alloys

Cite this

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title = "Synthesis characterization of magnetic properties in La0.7-x Lnx Pb0.3 MnO3 (Ln = Pr, Nd, Gd, Dy, Sm and Y) perovskite compounds",
abstract = "The influence of La substitution by rare-earth elements on the magnetization behaviors of perovskite oxides, La0.7-x Lnx Pb0.3 MnO3 (Ln = Pr, Nd, Gd, Dy, Sm and Y), is investigated. The replacement of La ion by Pr, Nd, Gd, Dy, Sm or Y results in a considerable decrease in the ferromagnetic ordering temperature TC and clearly irreversible behavior in the FC-ZFC curves showing a short-range spin order phase. The fact is in agreement with the smaller ionic radii of Pr, Nd, Gd, Dy, Sm and Y ions in contrast to La ion and the corresponding larger distortion of perovskite structures. The saturation magnetization MS increases as Pr or Nd content increases while MS decreases as Sm or Y content increases. Moreover, the saturation magnetization MS increases and then decreases as Gd or 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 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.",
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Synthesis characterization of magnetic properties in La0.7-x Lnx Pb0.3 MnO3 (Ln = Pr, Nd, Gd, Dy, Sm and Y) perovskite compounds. / Kao, M. C.; Chen, H. Z.; Young, S. L.; Shen, C. Y.; Horng, Lance.

In: Journal of Alloys and Compounds, Vol. 440, No. 1-2, 16.08.2007, p. 18-22.

Research output: Contribution to journalArticle

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AU - Kao, M. C.

AU - Chen, H. Z.

AU - Young, S. L.

AU - Shen, C. Y.

AU - Horng, Lance

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N2 - The influence of La substitution by rare-earth elements on the magnetization behaviors of perovskite oxides, La0.7-x Lnx Pb0.3 MnO3 (Ln = Pr, Nd, Gd, Dy, Sm and Y), is investigated. The replacement of La ion by Pr, Nd, Gd, Dy, Sm or Y results in a considerable decrease in the ferromagnetic ordering temperature TC and clearly irreversible behavior in the FC-ZFC curves showing a short-range spin order phase. The fact is in agreement with the smaller ionic radii of Pr, Nd, Gd, Dy, Sm and Y ions in contrast to La ion and the corresponding larger distortion of perovskite structures. The saturation magnetization MS increases as Pr or Nd content increases while MS decreases as Sm or Y content increases. Moreover, the saturation magnetization MS increases and then decreases as Gd or 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 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.

AB - The influence of La substitution by rare-earth elements on the magnetization behaviors of perovskite oxides, La0.7-x Lnx Pb0.3 MnO3 (Ln = Pr, Nd, Gd, Dy, Sm and Y), is investigated. The replacement of La ion by Pr, Nd, Gd, Dy, Sm or Y results in a considerable decrease in the ferromagnetic ordering temperature TC and clearly irreversible behavior in the FC-ZFC curves showing a short-range spin order phase. The fact is in agreement with the smaller ionic radii of Pr, Nd, Gd, Dy, Sm and Y ions in contrast to La ion and the corresponding larger distortion of perovskite structures. The saturation magnetization MS increases as Pr or Nd content increases while MS decreases as Sm or Y content increases. Moreover, the saturation magnetization MS increases and then decreases as Gd or 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 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.

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