This article is cited in 8 papers

Magnetism

Thermal expansion of dysprosium tetraboride

N. V. Mitroshenkov, V. V. Novikov

I. G. Petrovsky Bryansk State University

Abstract: The temperature variations of the interplanar spacings $a(T)$ and $c(T)$ in the crystal lattice of dysprosium tetraboride have been studied using X-ray diffraction in the temperature range 5–300 K. Anomalous variations of $a(T)$ and $c(T)$ in the temperature range of magnetic transformations, anisotropy of the thermal expansion of DyB$_4$, and the monoclinic distortion of the crystal structure at low temperatures have been revealed. The magnitudes of the spontaneous magnetostriction, the thermal expansion coefficients $\alpha_a$, $\alpha_c$, and the exchange integrals $Y_a$ and $Y_c$ have been determined.

Received: 15.11.2011

 English version: Physics of the Solid State, 2012, 54:6, 1186–1190

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