Investigation of thermal behavior of monoclinic ludwigite-type oxoborate Cu2FeO2(BO3) in the range 300-1273 K
Biryukov, Y.P., Bubnova, R.S., Shablinskii, A.P., (...), Krzhizhanovskaya, M.G., Vereshchagin, S.N.// Acta Crystallographica Section B Structural Science Crystal Engineering and Materials//
https://doi.org/10.1107/S2052520625007413
Cover illustration: Crystal structure of Cu2FeO2(BO3) represented in terms of cation- and oxo-centered polyhedra in comparison with figures of eigenvalues of thermal expansion tensor at 300 K (green color) and 1000 K (red color). The anisotropy of thermal expansion is explained by (i) the preferable orientation of the [BO3]3− units, (ii) the theory of shear deformations of the monoclinic ac plane and (iii) an arrangement of the oxo-centered double chains.