Induced chemical pressure by O vacancies in (Tb1-xNa x)MnO3-y

T. S. Chan, R. S. Liu, Y. H. Lien, C. Y. Huang, S. F. Hu, J. M. Chen, J. F. Lee, M. Karppinen, H. Yamauchi

Research output: Contribution to journalArticle

Abstract

The crystal structure and magnetic properties of perovskite-related (Tb1-xNax)MnO3-y compounds in the compositional range 0 ≤ x ≤ 0.3 are reported. We found that the effective moments decrease with increasing Na content, which is due to weaken the rare-earth interaction and dilute average rare-earth moment in each unit cell. Moreover, a decrease of unit cell volume with Na-doping is also observed resulting from an increase in the oxygen vacancies. The result is supported by the X-ray absorption near-edge structure (XANES) spectra and the closed-ampoule iodometry technique.

Original languageEnglish
Pages (from-to)256-262
Number of pages7
JournalChinese Journal of Physics
Volume45
Issue number2 II
Publication statusPublished - 2007 Apr 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Chan, T. S., Liu, R. S., Lien, Y. H., Huang, C. Y., Hu, S. F., Chen, J. M., Lee, J. F., Karppinen, M., & Yamauchi, H. (2007). Induced chemical pressure by O vacancies in (Tb1-xNa x)MnO3-y. Chinese Journal of Physics, 45(2 II), 256-262.