Magnetization processes of (La 0.7 Pb 0.3 MnO 3 ) 1-x (SiO 2 ) x composites

S. L. Young, T. C. Wu, L. Horng, C. H. Lin, H. Z. Chen, M. C. Kao, C. R. Ou, N. F. Shih, J. B. Shi

Research output: Contribution to journalArticle

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Abstract

The ceramic composites, (La 0.7Pb 0.3MnO 3) 1-x (SiO 2) x, with diluted magnetic properties are prepared using solid-sate sintering route. Magnetization processes of (La 0.7Pb 0.3MnO 3) 1-x (SiO 2) x composites are explored in this study. Ferromagnetism is gradually attenuated due to the magnetic dilution induced by the increase of SiO 2 content. Clearly, irreversible behavior is observed in the zero-field cooling and the field cooling (ZFC-FC) curves at a low field of 100 Oe. Saturation magnetization decreases as x increases while ferromagnetic transition temperature remains around 346 K for all composites. All the composites exhibit ferromagnetic hysteresis behavior which can be modeled by the law of the approach to saturation in the form M=M S(1-a/H). The term a/H expresses the deviation of magnetization from saturation. The smaller factor a for La 0.7Pb 0.3MnO 3-rich samples results in sharper square curve which should be associated with the long-range spin order of ferromagnetic coupling.

Original languageEnglish
Pages (from-to)953-956
Number of pages4
JournalJournal of Superconductivity and Novel Magnetism
Volume23
Issue number6
DOIs
Publication statusPublished - 2010 Aug 1

Fingerprint

Magnetization
magnetization
composite materials
Composite materials
saturation
Cooling
cooling
Ferromagnetism
curves
Saturation magnetization
ferromagnetism
Dilution
Superconducting transition temperature
dilution
Hysteresis
Magnetic properties
sintering
Sintering
transition temperature
hysteresis

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Young, S. L. ; Wu, T. C. ; Horng, L. ; Lin, C. H. ; Chen, H. Z. ; Kao, M. C. ; Ou, C. R. ; Shih, N. F. ; Shi, J. B. / Magnetization processes of (La 0.7 Pb 0.3 MnO 3 ) 1-x (SiO 2 ) x composites. In: Journal of Superconductivity and Novel Magnetism. 2010 ; Vol. 23, No. 6. pp. 953-956.
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Magnetization processes of (La 0.7 Pb 0.3 MnO 3 ) 1-x (SiO 2 ) x composites. / Young, S. L.; Wu, T. C.; Horng, L.; Lin, C. H.; Chen, H. Z.; Kao, M. C.; Ou, C. R.; Shih, N. F.; Shi, J. B.

In: Journal of Superconductivity and Novel Magnetism, Vol. 23, No. 6, 01.08.2010, p. 953-956.

Research output: Contribution to journalArticle

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AU - Young, S. L.

AU - Wu, T. C.

AU - Horng, L.

AU - Lin, C. H.

AU - Chen, H. Z.

AU - Kao, M. C.

AU - Ou, C. R.

AU - Shih, N. F.

AU - Shi, J. B.

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