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


研究成果: 雜誌貢獻期刊論文同行評審


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.

頁(從 - 到)256-262
期刊Chinese Journal of Physics
發行號2 II
出版狀態已發佈 - 2007 4月

ASJC Scopus subject areas

  • 一般物理與天文學


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