Crystal structure, phonon and luminescence properties of AgRE(WO4)2 tungstates, where RE = Y, Pr, Nd, Sm - Lu

Patrycja Godlewska , Elżbieta Tomaszewicz , Lucyna Macalik , Maciej Ptak , Paweł Edward Tomaszewski , M. Berkowski , Piotr Solarz , Karol Lemański , Jerzy Hanuza

Abstract

The crystal structure of the all studied compounds was refined in the monoclinic C2/m () space group. The IR and Raman spectra of polycrystalline AgRE(WO4)2 have been recorded and analysed using the factor group approach. In the theoretical considerations the C2/m, P2/c and C2/c unit cell structures were taken into account. The change of the unit cell parameters induced by the RE ions exchange has been analysed. The assignment of the observed bands to the internal and external modes has been proposed. The verification of the structure has been done on the basis of the vibrational behaviour of the studied tungstates. Absorption, emission and excitation spectra of the investigated AgRE(WO4)2 polycrystals have been measured and analysed. The luminescence decay times of 5D0 → 7F2 (Eu3+) and 5D4 → 7F5 (Tb3+) transitions have been calculated.
Author Patrycja Godlewska (EaE / IChaFT / DBCh)
Patrycja Godlewska,,
- Department of Bioorganic Chemistry
, Elżbieta Tomaszewicz
Elżbieta Tomaszewicz,,
-
, Lucyna Macalik - Institute of Low Temperatures and Structure Research Polish Academy of Sciences (INTiBS PAN) [Polish Academy of Sciences (PAN)]
Lucyna Macalik,,
-
, Maciej Ptak - Institute of Low Temperatures and Structure Research Polish Academy of Sciences (INTiBS PAN) [Polish Academy of Sciences (PAN)]
Maciej Ptak,,
-
, Paweł Edward Tomaszewski
Paweł Edward Tomaszewski,,
-
, M. Berkowski
M. Berkowski,,
-
, Piotr Solarz - Institute of Low Temperatures and Structure Research Polish Academy of Sciences (INTiBS PAN) [Polish Academy of Sciences (PAN)]
Piotr Solarz,,
-
, Karol Lemański
Karol Lemański,,
-
, Jerzy Hanuza (EaE / IChaFT / DBCh) - [inna]
Jerzy Hanuza,,
- Department of Bioorganic Chemistry
- inna
Total number of authors10
Journal seriesJournal of Alloys and Compounds, ISSN 0925-8388, (A 35 pkt)
Issue year2018
Vol745
Pages779-788
Publication size in sheets0.5
Keywords in EnglishAgRE(WO4)2 tungstatesX-rayIR and Raman spectraFactor group analysisLuminescence
ASJC Classification2210 Mechanical Engineering; 2211 Mechanics of Materials; 2505 Materials Chemistry; 2506 Metals and Alloys
DOIDOI:10.1016/j.jallcom.2018.02.196
Languageen angielski
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Godlewska_Tomaszewicz_Macalik_Ptak_Tomaszewski_Berkowski_Lemanski_Solarz_Deren_Hanuza_Crystal_Structure_Phonon_And_Luminescence.pdf 2,73 MB
Score (nominal)35
Score sourcejournalList
Publication indicators WoS Citations = 4; Scopus SNIP (Source Normalised Impact per Paper): 2018 = 1.386; WoS Impact Factor: 2018 = 4.175 (2) - 2018=3.624 (5)
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