Thermal Expansion Behavior of Solid Solution Y1.9R0.1Mo4O15 (R = Sm, Nd, Dy)


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Several rare earth solid solutions of Y1.9R0.1Mo4O15 (R=Sm, Nd, Dy) with interesting thermal expansion behavior were prepared and studied by X-ray and neutron diffraction. These solid solutions crystallize in a monoclinic space group P21/c. The lattice parameters a, b and c of Y1.9R0.1Mo4O15 increase with increasing of the ionic radius of substituted elementary. The high-temperature XRD data for Y1.9Sm0.1Mo4O15 show that there is an unusual low thermal expansion behavior in the 25~100°C range followed by a normal thermal expansion at higher temperature up to 600°C. Since no phase transition was observed, the temperature dependence of Mo2-O14 bond distance seems to be responsible for the anomalous thermal behavior.



Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong






H. Wang et al., "Thermal Expansion Behavior of Solid Solution Y1.9R0.1Mo4O15 (R = Sm, Nd, Dy)", Key Engineering Materials, Vols. 336-338, pp. 2328-2330, 2007

Online since:

April 2007




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