Synthesis, Structure, and Luminescent Properties of the New Double Borate K3Eu3B4O12

  • Evgeniy V. Kovtunets Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, 6, Sakhyanova str., 670047 Ulan-Ude, Republic of Buryatia, Russian Federation https://orcid.org/0000-0003-1301-1983
  • Alexey K. Subanakov Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, 6, Sakhyanova str., 670047 Ulan-Ude, Republic of Buryatia, Russian Federation https://orcid.org/0000-0002-1674-283X
  • Bair G. Bazarov Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, 6, Sakhyanova str., 670047 Ulan-Ude, Republic of Buryatia, Russian Federation https://orcid.org/0000-0003-1712-6964
Keywords: double borates of potassium and rare-earth elements, ceramic technology, Rietveld method, luminescent properties.

Abstract

The study established the formation of the new double borate K3Eu3B4O12. The Rietveld refi nement of the crystal structure revealed that K3Eu3B4O12 crystallises in the monoclinic syngony with unit cell parameters a = 10.6727(7) Å, b = 8.9086(6) Å, c = 13.9684(9) Å, b = 110.388(2)° (space group P2/c). K3Eu3B4O12 has a layered structure with [Eu8(BO3)8]∞ sheets which are almost parallel to the ab plane. These sheets are formed by pentagonal EuO7 bipyramids, EuO6 octahedras, and BO3 triangles
attached to them through common vertices. Neighbouring layers are interconnected via pentagonal EuO7 bipyramids, BO3 triangles, and potassium cations. The luminescence spectrum demonstrates a noticeable emission band at 611 nm, resulting from the 5D07F2 transition of Eu3+ ions.

 

 

 

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Author Biographies

Evgeniy V. Kovtunets, Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, 6, Sakhyanova str., 670047 Ulan-Ude, Republic of Buryatia, Russian Federation

Postgraduate Student,
Laboratory of Oxide Systems, Baikal Institute of Nature
Management, Siberian Branch of the Russian Academy
of Sciences, Ulan-Ude, Russian Federation; e-mail:
kovtunets@binm.ru

Alexey K. Subanakov, Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, 6, Sakhyanova str., 670047 Ulan-Ude, Republic of Buryatia, Russian Federation

PhD in Chemistry, Senior
Researcher, Laboratory of Oxide Systems, Baikal
Institute of Nature Management, Siberian Branch of
the Russian Academy of Sciences, Ulan-Ude, Russian
Federation; e-mail: subanakov@binm.bscnet.ru.

Bair G. Bazarov, Baikal Institute of Nature Management, Siberian Branch of the Russian Academy of Sciences, 6, Sakhyanova str., 670047 Ulan-Ude, Republic of Buryatia, Russian Federation

DSc in Chemistry, Leading
Researcher, Laboratory of Oxide Systems, Baikal
Institute of Nature Management, Siberian Branch of
the Russian Academy of Sciences, Ulan-Ude, Russian
Federation; e-mail: bazbg@rambler.ru.

Published
2020-06-25
How to Cite
Kovtunets, E. V., Subanakov, A. K., & Bazarov, B. G. (2020). Synthesis, Structure, and Luminescent Properties of the New Double Borate K3Eu3B4O12. Kondensirovannye Sredy I Mezhfaznye Granitsy = Condensed Matter and Interphases, 22(2), 219-224. https://doi.org/10.17308/kcmf.2020.22/2823
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