Electrical properties of Ln2Mo2O7 pyrochlores (Ln=Sm---Yb, Y)

Subramanian, M. A. ; Aravamudan, G. ; Subba Rao, G. V. (1980) Electrical properties of Ln2Mo2O7 pyrochlores (Ln=Sm---Yb, Y) Materials Research Bulletin, 15 (10). pp. 1401-1408. ISSN 0025-5408

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Official URL: http://www.sciencedirect.com/science/article/pii/0...

Related URL: http://dx.doi.org/10.1016/0025-5408(80)90094-X


Cubic oxide pyrochlores, Ln2Mo2O7, Ln=Sm---Yb,Y, (Nd1-xAx), A=Er and Yb; 0 < x < 1.0, have been synthesized and electrical properties were examined in the range 77-600K. Semiconductor behavior is observed for Ln=Eu---Yb, Y but the resistivity and Ea are low. Sm2Mo2O7 and Nd1-xYbxMo2O7 (0.05 ≤ x ≤ 0.1) exhibit semimetallic or metallic behavior. The mechanism of conduction in these compounds is explained on the basis of band model proposed by Sleight et al.

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