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arXiv · 1410.6688

Magnetization, crystal structure and anisotropic thermal expansion of single-crystal SrEr2O4

Hai-Feng Li·Andrew Wildes·Binyang Hou·Cong Zhang·Berthold Schmitz·Paul Meuffels·Georg Roth·Thomas Brückel
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Abstract

The magnetization, crystal structure, and thermal expansion of a nearly stoichiometric Sr$_{1.04(3)}$Er$_{2.09(6)}$O$_{4.00(1)}$ single crystal have been studied by PPMS measurements and in-house and high-resolution synchrotron X-ray powder diffraction. No evidence was detected for any structural phase transitions even up to 500 K. The average thermal expansions of lattice constants and unit-cell volume are consistent with the first-order Grüneisen approximations taking into account only the phonon contributions for an insulator, displaying an anisotropic character along the crystallographic \emph{a}, \emph{b}, and \emph{c} axes. Our magnetization measurements indicate that obvious magnetic frustration appears below $\sim$15 K, and antiferromagnetic correlations may persist up to 300 K.

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Hai-Feng Li, Andrew Wildes, Binyang Hou, Cong Zhang, Berthold Schmitz, Paul Meuffels, Georg Roth, Thomas Brückel. 2014-10-24. Magnetization, crystal structure and anisotropic thermal expansion of single-crystal SrEr2O4. https://doi.org/10.1039/c4ra06966h

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