Microstructure and magnetism of Co-doped PbPdO2 films with different grain sizes

F. L. Tang, J. Liu, C. Mei, S. Y. Huang, T. T. Song, H. L. Su, M. K. Lee, Y. C. Wu, J. C.A. Huang

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Single-phase Co-doped PbPdO2 films with grain sizes ranging from 30 nm to 120 nm were synthesized using a sol-gel spin-coating method. The doped Co ions exhibit a mixed state of 2+ and 3+, which is caused by the existence of Pb vacancies and the low electronegativity of Co. Ferromagnetism, paramagnetism, antiferromagnetism and a charge ordering state were observed in all of the Co-doped PbPdO2 films. Additionally, the charge ordering signal determined by the surface state of the nanograins is gradually weakened with decreasing grain size. The carrier-mediated mechanism bridged to the bound magnetic polaron model was used to explain the coexistence of the ferromagnetism, paramagnetism and antiferromagnetism. For the ferromagnetism, the tendency of the saturation magnetization to increase with temperature was found in all the Co-doped PbPdO2 films with a nanograin structure. This abnormal magnetic behavior is believed to be one of the peculiar features of spin gapless semiconductors.

Original languageEnglish
Pages (from-to)37522-37529
Number of pages8
JournalRSC Advances
Volume6
Issue number44
DOIs
Publication statusPublished - 2016 Jan 1

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Ferromagnetism
Magnetism
Paramagnetism
Antiferromagnetism
Microstructure
Gene Conversion
Electronegativity
Spin coating
Surface states
Saturation magnetization
Vacancies
Sol-gels
Ions
Semiconductor materials
Temperature

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)

Cite this

Tang, F. L., Liu, J., Mei, C., Huang, S. Y., Song, T. T., Su, H. L., ... Huang, J. C. A. (2016). Microstructure and magnetism of Co-doped PbPdO2 films with different grain sizes. RSC Advances, 6(44), 37522-37529. https://doi.org/10.1039/c6ra04424g
Tang, F. L. ; Liu, J. ; Mei, C. ; Huang, S. Y. ; Song, T. T. ; Su, H. L. ; Lee, M. K. ; Wu, Y. C. ; Huang, J. C.A. / Microstructure and magnetism of Co-doped PbPdO2 films with different grain sizes. In: RSC Advances. 2016 ; Vol. 6, No. 44. pp. 37522-37529.
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Tang, FL, Liu, J, Mei, C, Huang, SY, Song, TT, Su, HL, Lee, MK, Wu, YC & Huang, JCA 2016, 'Microstructure and magnetism of Co-doped PbPdO2 films with different grain sizes', RSC Advances, vol. 6, no. 44, pp. 37522-37529. https://doi.org/10.1039/c6ra04424g

Microstructure and magnetism of Co-doped PbPdO2 films with different grain sizes. / Tang, F. L.; Liu, J.; Mei, C.; Huang, S. Y.; Song, T. T.; Su, H. L.; Lee, M. K.; Wu, Y. C.; Huang, J. C.A.

In: RSC Advances, Vol. 6, No. 44, 01.01.2016, p. 37522-37529.

Research output: Contribution to journalArticle

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AU - Liu, J.

AU - Mei, C.

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AU - Song, T. T.

AU - Su, H. L.

AU - Lee, M. K.

AU - Wu, Y. C.

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Tang FL, Liu J, Mei C, Huang SY, Song TT, Su HL et al. Microstructure and magnetism of Co-doped PbPdO2 films with different grain sizes. RSC Advances. 2016 Jan 1;6(44):37522-37529. https://doi.org/10.1039/c6ra04424g