Synthesis of New Sr3RE2(Ge3O9)(2) (RE=La, Y) cyclogermanates by liquid-phase precursor methods / Melkozerova Marina A.,Lipina Olga A.,Baldanova Yana V.,Tyutyunnik Alexander P.,Zubkov Vladimir G. // JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS. - 2017. - V. 103, l. . - P. 76-81.

ISSN/EISSN:

0022-3697 / 1879-2553

Type:

Article

Abstract:

New cyclogermanates Sr3RE2(Ge3O9)(2) (RE=La, Y) with Ca3Y2(Si3O9)(2) cyclosilicate structure type have been prepared by two liquid-phase precursor routes: the citrate and the Pechini methods. The phase composition, morphology and optical properties of the intermediate and final products have been characterized by powder Xray diffraction (XRD), scanning electron microscopy (SEM) and diffuse reflectance spectroscopy (DRS). The thermogravimetric (TGA) and differential thermal analyses (DTA) were used to study the thermal decomposition of the precursors. The powder XRD measurements indicate that the phase formation of Sr3RE2(Ge3O9)(2) (RE=La, Y) (S.G. C2/c, Z=4) takes place after 20 h annealing at 800 degrees C. The DRS data revealed that the cyclogermanates are promising optical hosts.

Author keywords:

Optical materials; X-ray diffraction; Optical properties ENERGY-TRANSFER; LUMINESCENT PROPERTIES; CRYSTAL-STRUCTURE; EU; PHOSPHOR; BAND; EXCITATION; EDGE; ZN; MN

DOI:

10.1016/j.jpcs.2016.12.007

Web of Science ID:

ISI:000393935000012

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	APR
Publisher	PERGAMON-ELSEVIER SCIENCE LTD
Address	THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
Language	English
EISSN	1879-2553
Keywords-Plus	ENERGY-TRANSFER; LUMINESCENT PROPERTIES; CRYSTAL-STRUCTURE; EU; PHOSPHOR; BAND; EXCITATION; EDGE; ZN; MN
Research-Areas	Chemistry; Physics
Web-of-Science-Categories	Chemistry, Multidisciplinary; Physics, Condensed Matter
Author-Email	melkozerova@yandex.ru
Funding-Acknowledgement	Russian Science Foundation {[}16-13-10111]
Funding-Text	The authors thank Dr. Andrey N. Enyashin (Institute of Solid State Chemistry, UB RAS, Ekaterinburg, Russia) for fruitful discussions, and Mrs. Lyudmila L. Surat (Institute of Solid State Chemistry, UB RAS, Ekaterinburg, Russia) for technical assistance. The work was supported by the Russian Science Foundation Project no. 16-13-10111. The structural studies were carried out at the multiple-access center for X-ray structure analysis at the Institute of Solid State Chemistry, UB RAS (Ekaterinburg, Russia).
Number-of-Cited-References	27
Usage-Count-Last-180-days	4
Usage-Count-Since-2013	6
Journal-ISO	J. Phys. Chem. Solids
Doc-Delivery-Number	EK4YV