ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Several rare earth solid solutions of Y1.9R0.1Mo4O15 (R=Sm, Nd, Dy) with interesting thermalexpansion behavior were prepared and studied by X-ray and neutron diffraction. These solid solutionscrystallize in a monoclinic space group P21/c. The lattice parameters a, b and c of Y1.9R0.1Mo4O15 increasewith increasing of the ionic radius of substituted elementary. The high-temperature XRD data forY1.9Sm0.1Mo4O15 show that there is an unusual low thermal expansion behavior in the 25~100°C rangefollowed by a normal thermal expansion at higher temperature up to 600°C. Since no phase transition wasobserved, the temperature dependence of Mo2-O14 bond distance seems to be responsible for theanomalous thermal behavior
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/53/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.336-338.2328.pdf
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