Monoclinic SmAl3(BO3)(4): synthesis, structural and spectroscopic properties | Научно-инновационный портал СФУ

Monoclinic SmAl3(BO3)(4): synthesis, structural and spectroscopic properties

Тип публикации: статья из журнала

Год издания: 2020

Идентификатор DOI: 10.1107/S2052520620008781

Ключевые слова: ir spectroscopy, monoclinic structure, luminescence, raman spectroscopy, x-ray diffraction, crystal structure

Аннотация: Single crystals of SmAl3(BO3)(4) were synthesized by the group growth on seeds method. The crystal structure was solved using a single-crystal experiment and the purity of the bulk material was proved by the Rietveld method. This borate crystallizes in the monoclinic C2/c space group with unit-cell parameters a = 7.2386 (3), b = 9.3412 (5), c = 11.1013 (4) angstrom and beta = 103.2240 (10)degrees. IR and Raman spectroscopic analyses confirmed the monoclinic structure of SmAl3(BO3)(4). Under 532.1 nm excitation, luminescence spectra exhibit bands assignable to the transitions from (4)G(5)(/2) to H-6(5/2), H-6(7/2), H-6(9/2) and H-6(11/2). The similarity of the luminescence spectra of the trigonal and monoclinic polymorphs is explained by the minor role of Sm - O bond distortion and the primary role of rotational distortion of SmO6 octahedra. The smaller covalency of the Sm-O bond in alumoborates is deduced in comparison with galloborates. Calorimetric measurements did not reveal high-temperature structural phase transitions up to a temperature of 720 K.

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Издание

Журнал: ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS

Выпуск журнала: Vol. 76, Part 4

Номера страниц: 654-660

ISSN журнала: 20525206

Место издания: CHESTER

Издатель: INT UNION CRYSTALLOGRAPHY

Авторы

  • Oreshonkov A.S. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Mol Spect, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Sch Engn & Construct, Krasnoyarsk 660041, Russia)
  • Shestakov N.P. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Mol Spect, Krasnoyarsk 660036, Russia)
  • Molokeev M.S. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk, Russia; Siberian Fed Univ, Sch Engn Phys & Radio Elect, Krasnoyarsk 660041, Russia)
  • Aleksandrovsky A.S. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Coherent Opt, Krasnoyarsk 660036, Russia; Siberian Fed Univ, Inst Nanotechnol Spect & Quantum Chem, Krasnoyarsk 660041, Russia)
  • Gudim I.A. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Radiospect & Spintron, Krasnoyarsk 660036, Russia)
  • Temerov V.L. (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Radiospect & Spintron, Krasnoyarsk 660036, Russia)
  • Adichtchev S.V (Russian Acad Sci, Inst Automat & Electrometry, Novosibirsk 630090, Russia)
  • Pugachev A.M. (Russian Acad Sci, Inst Automat & Electrometry, Novosibirsk 630090, Russia)
  • Nemtsev I.V (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Mol Spect, Krasnoyarsk 660036, Russia; Fed Res Ctr KSC SB RAS, Dept Mol Elect, Krasnoyarsk 660036, Russia)
  • Pogoreltsev E.I (Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk, Russia; Siberian Fed Univ, Krasnoyarsk 660074, Russia)
  • Denisenko Y.G. (Tyumen State Univ, Dept Inorgan & Phys Chem, Tyumen 625003, Russia; Ind Univ Tyumen, Dept Gen & Special Chem, Tyumen 625000, Russia)

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