Abstract
We present the synthesis of AgLnMo 2O 8 compounds with Ln = La-Nd and Sm. These compounds represent a scheelite-type structure characterized by MoO 4-tetrahedrons. IR spectra show five absorption peaks in the region of 1000-400cm −1, around 800cm −1 and 400cm −1, which correspond to the modes of the tetrahedral MoO 2− 4 groups. All of AgLnMo 2O 8 (Ln = La-Nd and Sm) oxides are dielectric materials at room temperature. The temperature dependence of the magnetic susceptibility of AgLnMo 2O 8 (Ln = Ce-Nd and Sm) shows Curie-Weiss law behavior from 100K to 300K. This indicates that both Ce and Pr exist in +3 oxidation state in AgLnMo 2O 8. For AgLaMo 2O 8, diamagnetic properties are found as expected.
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