A new double-cell polytype of samarium aluminum dimetaborate: Synthesis, crystal structure, and spectroscopic characterization. (June 2022)

• Record Type: Journal Article
• Authors: Antipin, Alexander M.; Volkova, Elena A.; Rassulov, Victor A.; Kuzmin, Nikolay N.; Borovikova, Elena Yu.; Latanova, Elena A.; Koporulina, Elizaveta V.
• Is Part Of: Materials today communications. Volume 31(2022)
• Publication Date: 2022-06
• Subjects: Samarium dimetaborate -- Crystal structure -- Flux growth -- Raman spectroscopy -- Luminescence; Materials science -- Periodicals; 620.11
• DOI: 10.1016/j.mtcomm.2022.103317
• Languages: English
• ISSNs: 2352-4928

Abstract

Abstract: New nonstoichiometric SmAl-dimetaborate crystals were synthesized using spontaneous nucleation from Sm2 O3 – B2 O3 – K2 Mo3 O10 flux melt. The room temperature and low-temperature single-crystal XRD investigations were carried out. Obtained solids crystallize in the non-centrosymmetric space group P 6 ¯ 2 m, with unit cells parameters a = b = 4.570(1) Å, c = 18.521(1) Å, V = 335.00(1) Å 3 (for Sm2 Al3.84 B8 O21.27, T = 295° K ) and a = b = 4.563(1);Å, c = 18.505(1) Å, V = 333.91(1) Å 3 (for Sm2 Al3.96 B8 O21.30, T = 90° K ), and z = 1. A comprehensive study of samarium double-cell polytype crystals was performed using scanning electron microscopy, luminescence spectroscopy and Raman measurements. Graphical Abstract: ga1