Structure of Gd0.95Bi0.05Fe3(BO3)4 single crystals at 293 and 90 K

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• 作者：E. S. Smirnova ; O. A. Alekseeva ; A. P. Dudka ; I. A. Verin…
• 刊名：Crystallography Reports
• 出版年：2016
• 出版时间：July 2016
• 年：2016
• 卷：61
• 期：4
• 页码：558-565
• 全文大小：698 KB
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Crystallography
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1562-689X
• 卷排序：61

文摘

The structure of GdFe₃(BO₃)₄ single crystals has been studied by X-ray diffraction at 293 and 90 K. The crystals are grown from a flux in the Bi₂Mo₃O₁₂–B₂O₃–Li₂MoO₄–Gd₂O₃–Fe₂O₃ system. The results of chemical analysis and structural study show that these crystals contain bismuth as an impurity. It is found that bismuth atoms are located at gadolinium sites in the structure. A decrease in the temperature is accompanied by a lowering of the symmetry from sp. gr. R32 (at 293 K) to sp. gr. P3₁21 (at 90 K). The presence of two types of iron chains with different geometries at 90 K promotes a change in the magnetic properties of these crystals with a decrease in the temperature.Original Russian Text © E.S. Smirnova, O.A. Alekseeva, A.P. Dudka, I.A. Verin, V.V. Artemov, L.N. Bezmaternykh, I.A. Gudim, K.V. Frolov, I.S. Lyubutin, 2016, published in Kristallografiya, 2016, Vol. 61, No. 4, pp. 535–542.