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Eu3+ ions in the highly symmetrical octahedral site in Ba2MgWO6 double perovskite
Europium-doped double perovskite Ba2MgWO6 (BMW) has been successfully obtained by a conventional high-temperature solid-state method. The Eu3+ ions enter only the Mg2+ sites with Oh symmetry, which causes the unit cell to expand. The emission spectra measured at 8 K consists predominantly of a very...
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Published in: | Journal of alloys and compounds 2019-09, Vol.802, p.190-195 |
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Main Authors: | , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Europium-doped double perovskite Ba2MgWO6 (BMW) has been successfully obtained by a conventional high-temperature solid-state method. The Eu3+ ions enter only the Mg2+ sites with Oh symmetry, which causes the unit cell to expand. The emission spectra measured at 8 K consists predominantly of a very intense line at 597 nm corresponding to the 5D0 → 7F1 transition. No lines associated with f-f transitions are present on the excitation spectrum, which consists of a broad band centered at 301 nm, resulting from charge transfer transitions O2−→W6+. The emission decay curve for the sample with 0.1% Eu3+ at 10 K is single-exponential with decay time 4.23 ms.
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•Ba2MgWO6 (BMW) double perovskite doped with Eu3+ was obtained by the high-temperature solid-state method.•The 5D0 .→ 7F1 magnetic dipole transition dominates the Eu3+ emission spectrum.•In BMW host Eu3+ ions replace only with Mg2+ with Oh highly symmetrical site symmetry.•The excitation spectrum of Eu3+ emission in BMW consists of only one the O2− .→ W6+ charge-transfer band centered at 301 nm. |
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ISSN: | 0925-8388 1873-4669 |
DOI: | 10.1016/j.jallcom.2019.06.211 |