New double nonlinear-optical borate Rb3SmB6O12: Synthesis, structure and spectroscopic properties

被引：16

作者：

Atuchin, Victor ^{[1
,2
,3
,4
]}

Subanakov, Alexey ^{[5
]}

Aleksandrovsky, Aleksandr ^{[6
,7
]}

Bazarov, Bair ^{[5
]}

Bazarova, Jibzema ^{[5
]}

Krylov, Alexander ^{[8
]}

Molokeev, Maxim ^{[9
,10
,11
]}

Oreshonkov, Aleksandr ^{[8
,12
]}

Pugachev, Alexey ^{[13
]}

机构：

[1] SB RAS, Lab Opt Mat & Struct, Inst Semicond Phys, Novosibirsk 630090, Russia

[2] Kemerovo State Univ, Res & Dev Dept, Kemerovo 650000, Russia

[3] Novosibirsk State Univ, Dept Appl Phys, Novosibirsk 630090, Russia

[4] Novosibirsk State Tech Univ, Dept Ind Machinery Design, Novosibirsk 630073, Russia

[5] SB RAS, Lab Oxide Syst, Baikal Inst Nat Management, Ulan Ude 670047, Russia

[6] Kirensky Inst Phys Fed Res Ctr KSC SB RAS, Lab Coherent Opt, Krasnoyarsk 660036, Russia

[7] Siberian Fed Univ, Dept Photon & Laser Technol, Krasnoyarsk 660041, Russia

[8] Kirensky Inst Phys Fed Res Ctr KSC SB RAS, Lab Mol Spect, Krasnoyarsk 660036, Russia

[9] Fed Res Ctr KSC SB RAS, Kirensky Inst Phys, Lab Crystal Phys, Krasnoyarsk 660036, Russia

[10] Siberian Fed Univ, Krasnoyarsk 660041, Russia

[11] Far Eastern State Transport Univ, Dept Phys, Khabarovsk 680021, Russia

[12] Siberian Fed Univ, Sch Engn & Construct, Krasnoyarsk 660041, Russia

[13] Inst Automat & Electrometry, Lab Condensed Matter Spect, Novosibirsk 630090, Russia

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2022年 / 905卷

基金：

俄罗斯科学基金会;

关键词：

Borate; Crystal structure; Raman; Photoluminescence; CRYSTAL-STRUCTURE; TUNABLE EMISSION; ENERGY-TRANSFER; GROWTH; LUMINESCENT; PHOSPHOR; EU3+; POLYMORPHISM; BETA-BAB2O4;

D O I：

10.1016/j.jallcom.2022.164022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

New noncentrosymmetric alkali rare-earth double borate Rb3SmB6O12 was found in the ternary system Rb2O-Sm2O3-B2O3. The Rb3SmB6O12 powder was prepared by the solid state reaction method at 750 degrees C for 40 h and the crystal structure was obtained by the Rietveld method. Rb3SmB6O12 crystallized in space group R32 with unit cell parameters a = 13.4874 (3) and c = 30.9398 (6) angstrom, V = 4874.2 (2) angstrom(3), Z = 15. In the three-dimensional framework structure of Rb3SmB6O12, each [B5O10](5-) group is linked to four different Sm-O polyhedra and, likewise, each Sm-O polyhedron is connected to four neighboring [B5O10](5-) groups. The SmO polyhedra are formed by the face-sharing linked SmO6 octahedra. Rb+ cations are located in large cavities of the framework structure. From the thermal stability measurements, the incongruent melting of Rb3SmB6O12 is observed at 1104 K with as high melting enthalpy as H-m = -161.5 J/g. The nonlinear optical response of Rb3SmB6O12 tested via SHG is estimated to be similar to that of K3YB6O12. The Raman spectrum of Rb3SmB6O12 is mainly governed by the vibrations of BO4 and BO3 borate groups observed over the wavenumber range of 287-1550 cm(-1). The spectral bands below 270 cm(-1) were attributed to rotational, translational and mixed vibrations of Rb3SmB6O12 structural units. The luminescence spectrum of Sm3+ ions in the specific local environment of the Rb3SmB6O12 crystal lattice shows the ability to control the individual band intensity ratio originating from (4)G(5/2) level. (C) 2022 Elsevier B.V. All rights reserved.

引用

页数：7

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