Title

Crystal growth and magnetic properties of Ln-Mn-Al (Ln=Gd, Yb) compounds of the CaCr 2Al 10 and ThMn 12 structure types

Document Type

Article

Publication Date

10-1-2012

Abstract

We report the growth and characterization of LnMn 2xAl 10-x (Ln=Gd, Yb) crystals adopting the CaCr 2Al 10 and ThMn 12 structure types. Single crystals of LnMn 2xAl 10-x were synthesized via the self-flux method and characterized with single crystal X-ray diffraction. We compare LnMn 2xAl 10-x compounds adopting the CaCr 2Al 10 and ThMn 12 structure types, and outline synthesis methods to obtain each polymorph. Magnetic susceptibility measurements show paramagnetic behavior down to 3 K for both CaCr 2Al 10- and ThMn 12-type compounds, with observed magnetic moments of 1.3μ B for compounds adopting the CaCr 2Al 10 structure type to 4.2μ B for those adopting the ThMn 12 structure type. Compounds of both structure type exhibit metallic resistivity, with upturns at low temperature attributed to Kondo scattering. © 2012 Elsevier Inc. All rights reserved.

Publication Source (Journal or Book title)

Journal of Solid State Chemistry

First Page

143

Last Page

150

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