Synthesis, Structure, and Properties of EuLnCuSe3 (Ln = Nd, Sm, Gd, Er) | Sciact - CRIS-система Института катализа

Synthesis, Structure, and Properties of EuLnCuSe3 (Ln = Nd, Sm, Gd, Er) Научная публикация

Журнал

Crystals
, E-ISSN: 2073-4352

Вых. Данные

Год: 2022, Том: 12, Номер: 1, Номер статьи : 17, Страниц : 16 DOI: 10.3390/cryst12010017

Ключевые слова

Chalcogenides; Complex sulfides; Crystal structure; Magnetic properties; Rare earth elements

Авторы

Andreev Oleg V. ¹ , Atuchin Victor V. ^2,3,4 , Aleksandrovsky Alexander S. ^5,6 , Denisenko Yuriy G. ⁷ , Zakharov Boris A. ^8,9 , Tyutyunnik Alexander P. ¹⁰ , Habibullayev Navruzbek N. ¹ , Velikanov Dmitriy A. ⁵ , Ulybin Dmitriy A. ^1,9 , Shpindyuk Daniil D. ¹

Организации

1	Institute of Chemistry, University of Tyumen, 625003 Tyumen, Russia
2	Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, 630090 Novosibirsk, Russia
3	Research and Development Department, Kemerovo State University, 650000 Kemerovo, Russia
4	Department of Industrial Machinery Design, Novosibirsk State Technical University, 630073 Novosibirsk, Russia
5	Kirensky Institute of Physics, Federal Research Center, KSC, SB RAS, 660036 Krasnoyarsk, Russia
6	Department of Photonics and Laser Technology, Siberian Federal University, 660036 Krasnoyarsk, Russia
7	Department of General and Special Chemistry, Industrial University of Tyumen, 625000 Tyumen, Russia
8	Boreskov Institute of Catalysis, SB RAS, 630090 Novosibirsk, Russia
9	Laboratory of Molecular Design and Ecologically Safe Technologies, Novosibirsk State University, 630090 Novosibirsk, Russia
10	Institute of Solid State Chemistry, UB RAS, 620990 Ekaterinburg, Russia

Информация о финансировании (3)

1	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	0239-2021-0002
2	Министерство науки и высшего образования Российской Федерации (с 15 мая 2018)	0397-2019-0003 (АААА-А19-119031890025-9)
3	Правительство Тюменской области	2.89-дон от 07.12.2020

EuLnCuSe3 (Ln = Nd, Sm, Gd, Er), due to their complex composition, should be considered new materials with the ability to purposefully change the properties. Samples of the EuLnCuSe3 were prepared using Cu, rare earth metal, Se (99.99%) by the ampoule method. The samples were obtained by the crystallization from a melt and annealed at temperatures 1073 and 1273 K. The EuErCuSe3 crystal structure was established using the single-crystal particle. EuErCuSe3 crystallizes in the orthorhombic system, space group Cmcm, KCuZrS3 structure type, with cell parameters a = 4.0555 (3), b = 13.3570 (9), and c = 10.4602 (7) Å, V = 566.62 (6) Å3. In structure EuErCuSe3, erbium ions are coordinated by selenium ions in the octahedral polyhedron, copper ions are in the tetrahedral coordination, europium ions are between copper and erbium polyhedra layers and are coordinated by selenium ions as two-cap trigonal prisms. The optical band gap is 1.79 eV. At 4.7 K, a transition from the ferri-magnetic state to the paramagnetic state was detected in EuErCuSe3. At 85 and 293 K, the compound is in a paramagnetic state. According to XRPD data, EuLnCuSe3 (Ln = Nd, Sm, Gd) compounds have a Pnma orthorhombic space group of the Eu2 CuS3 structure type. For EuSmCuSe3, a = 10.75704 (15) Å, b = 4.11120 (5) Å, c = 13.37778 (22) Å. In the series of EuLnCuSe3 compounds, the optical band gap increases 1.58 eV (Nd), 1.58 eV (Sm), 1.72 eV (Gd), 1.79 eV (Er), the microhardness of the 205 (Nd), 210 (Sm), 225 (Gd) 235 ± 4 HV (Er) phases increases, and the thermal stability of the phases increases significantly. According to the measurement data of differential scanning calorimetry, the EuNdCuSe3 decomposes, according to the solid-phase reaction T = 1296 K, ∆H = 8.2 ± 0.8 kJ/mol. EuSmCuSe3 melts incongruently T = 1449 K, ∆H = 18.8 ± 1.9 kJ/mol. For the EuGdCuSe3, two (Tα↔β = 1494 K, ∆Hα↔β = 14.8 kJ/mol, Tβ↔γ = 1530 K, ∆Hβ↔γ = 4.8 kJ/mol) and for EuErCuSe3 three polymorphic transitions (Tα↔β = 1561 K, ∆Hα↔β = 30.3 kJ/mol, Tβ↔γ = 1579 K, ∆Hβ↔γ = 4.4 kJ/mol, and Tγ↔δ = 1600 K, ∆Hγ↔δ = 10.1 kJ/mol). The compounds melt incongruently at the temperature of 1588 K, ∆Hmelt = 17.9 ± 1.8 kJ/mol and 1664 K, ∆Hmelt = 25.6 ± 2.5 kJ/mol, respectively. Incongruent melting of the phases proceeds with the formation of a solid solution of EuSe and a liquid phase. © 2021 by the authors. Licensee MDPI, Basel, Switzerland.

Andreev O.V. , Atuchin V.V. , Aleksandrovsky A.S. , Denisenko Y.G. , Zakharov B.A. , Tyutyunnik A.P. , Habibullayev N.N. , Velikanov D.A. , Ulybin D.A. , Shpindyuk D.D.
Synthesis, Structure, and Properties of EuLnCuSe3 (Ln = Nd, Sm, Gd, Er)
Crystals. 2022. V.12. N1. 17 :1-16. DOI: 10.3390/cryst12010017 WOS Scopus РИНЦ CAPlus OpenAlex

Поступила в редакцию:	30 нояб. 2021 г.
Принята к публикации:	17 дек. 2021 г.
Опубликована online:	23 дек. 2021 г.
Опубликована в печати:	1 янв. 2022 г.

Web of science:	WOS:000747734700001
Scopus:	2-s2.0-85121715176
РИНЦ:	47550083
Chemical Abstracts:	2022:216288
OpenAlex:	W4200492292

БД	Цитирований
Scopus	17
РИНЦ	13
Web of science	18
OpenAlex	18