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.
|Number of pages||7|
|Journal||CHINESE JOURNAL OF PHYSICS|
|Issue number||2 II|
|Publication status||Published - 1 Apr 2007|
|MoE publication type||A1 Journal article-refereed|