Growth and characterization of Na3R(BO3)2 (R = La-Gd) borates: crystal structure, high-temperature behavior, and optical properties

Na3R(BO3)2 (R = La-Gd) borates, grown with Na2O-B2O3-NaF flux, crystallize in the space group P21/n. Contrary to previously published data, the peaks in the 980(La)-950(Gd) °C range are attributed to phase transition process, while the melting process occurs at about 100° higher. Another feature of...

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Published in:CrystEngComm Vol. 25, № 19. P. 2914-2924
Other Authors: Kuznetsov, Artem B., Jamous, Ammar Y., Svetlichnyi, Valerii A., Volkov, Sergey N., Korolkov, Ilya V., Kokh, Konstantin A., Gorelova, Liudmila A., Krzhizhanovskaya, Maria G., Aksenov, Sergey M., Kokh, Alexander E.
Format: Article
Language:English
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Online Access:http://vital.lib.tsu.ru/vital/access/manager/Repository/koha:001133153
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245 1 0 |a Growth and characterization of Na3R(BO3)2 (R = La-Gd) borates: crystal structure, high-temperature behavior, and optical properties  |c A. B. Kuznetsov, A. Y. Jamous, V. A. Svetlichnyi [et al.] 
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520 3 |a Na3R(BO3)2 (R = La-Gd) borates, grown with Na2O-B2O3-NaF flux, crystallize in the space group P21/n. Contrary to previously published data, the peaks in the 980(La)-950(Gd) °C range are attributed to phase transition process, while the melting process occurs at about 100° higher. Another feature of thermal behavior consists of the gradual decomposition of the compound into Na3R2(BO3)3. The end member in the decomposition series is Na2R2O(BO3)2, which originates under oxygen/water atmosphere. In addition, the components of the thermal expansion tensor and the dependings of the unit-cell parameters of Na3-Nd(BO3)2 on temperature were defined. A series of Pr3+, Nd3+, and Sm3+-doped Na3Gd(BO3)2 (NGB) borates were prepared from mixtures of grown crystals by solid-state synthesis, and their photoluminescence properties were studied in detail. The excitation and emission spectra of NGB: Pr3+ and NGB: Nd3+ are comparable with similar compounds, and the relative intensity reaches the maximum at 1 mol% of Pr3+, Sm3+, and 10 mol.% for Nd3+ doping. 
653 |a бораты 
653 |a высокотемпературное поведение 
653 |a термическое поведение 
653 |a фотолюминесцентные свойства 
655 4 |a статьи в журналах  |9 957352 
700 1 |a Kuznetsov, Artem B.  |9 506271 
700 1 |a Jamous, Ammar Y.  |9 809617 
700 1 |a Svetlichnyi, Valerii A.  |9 562988 
700 1 |a Volkov, Sergey N.  |9 957353 
700 1 |a Korolkov, Ilya V.  |9 106406 
700 1 |a Kokh, Konstantin A.  |9 89168 
700 1 |a Gorelova, Liudmila A.  |9 957354 
700 1 |a Krzhizhanovskaya, Maria G.  |9 957355 
700 1 |a Aksenov, Sergey M.  |9 440144 
700 1 |a Kokh, Alexander E.  |9 809610 
773 0 |t CrystEngComm  |d 2023  |g Vol. 25, № 19. P. 2914-2924  |x 1466-8033 
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