Photoluminescence associated with the site occupations of Ho3+ ions in BaTiO3

Abstract A nominal (Ba1−x Ho x )Ti1−x/4O3 (x = 0.01) (BHTH) ceramic with a single-phase tetragonal structure was prepared at 1400 °C using the solid-state reaction method. The analysis on the defect chemistry revealed that the real formula of BHTH is (Ba1−x Ho3x/4)(Ti1−x/4Ho x/4)O3 with Ba vacancies...

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Autores principales:	Da-Yong Lu, Dong-Xue Guan
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/f0be49632cfd49f8995ef27dda046bd0
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spelling	oai:doaj.org-article:f0be49632cfd49f8995ef27dda046bd02021-12-02T11:52:41ZPhotoluminescence associated with the site occupations of Ho3+ ions in BaTiO310.1038/s41598-017-06521-42045-2322https://doaj.org/article/f0be49632cfd49f8995ef27dda046bd02017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06521-4https://doaj.org/toc/2045-2322Abstract A nominal (Ba1−x Ho x )Ti1−x/4O3 (x = 0.01) (BHTH) ceramic with a single-phase tetragonal structure was prepared at 1400 °C using the solid-state reaction method. The analysis on the defect chemistry revealed that the real formula of BHTH is (Ba1−x Ho3x/4)(Ti1−x/4Ho x/4)O3 with Ba vacancies via electron paramagnetic resonance (EPR). Photoluminescence (PL) was investigated on the basis of excitation with different wavelength lasers. The results indicated that under 488-nm excitation, PL and Raman scattering can occur simultaneously as two distinct optical processes for BHTH ceramic powders, and the strongest PL band at 564 nm was discovered and verified to originate from the 5G6/5F1 → 5I7 transition of Ho3+ ions on the Ti sites in the BaTiO3 lattice. Upon 532- and 638-nm excitations, three PL bands of 5F4/5S2 → 5I8, 5F5 → 5I8, and 5F4/5S2 → 5I7 transitions are attributed to the contributions from Ho3+ ions on the Ba sites. The common Raman spectrum of BaTiO3 can be observed without PL disturbance using 785-nm excitation wavelength. The PL effect may provide a probe for the site occupations of Ho3+ ions in widely-used BaTiO3 dielectric ceramics co-doped with Ho3+ and other dopants.Da-Yong LuDong-Xue GuanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Da-Yong Lu Dong-Xue Guan Photoluminescence associated with the site occupations of Ho3+ ions in BaTiO3
description	Abstract A nominal (Ba1−x Ho x )Ti1−x/4O3 (x = 0.01) (BHTH) ceramic with a single-phase tetragonal structure was prepared at 1400 °C using the solid-state reaction method. The analysis on the defect chemistry revealed that the real formula of BHTH is (Ba1−x Ho3x/4)(Ti1−x/4Ho x/4)O3 with Ba vacancies via electron paramagnetic resonance (EPR). Photoluminescence (PL) was investigated on the basis of excitation with different wavelength lasers. The results indicated that under 488-nm excitation, PL and Raman scattering can occur simultaneously as two distinct optical processes for BHTH ceramic powders, and the strongest PL band at 564 nm was discovered and verified to originate from the 5G6/5F1 → 5I7 transition of Ho3+ ions on the Ti sites in the BaTiO3 lattice. Upon 532- and 638-nm excitations, three PL bands of 5F4/5S2 → 5I8, 5F5 → 5I8, and 5F4/5S2 → 5I7 transitions are attributed to the contributions from Ho3+ ions on the Ba sites. The common Raman spectrum of BaTiO3 can be observed without PL disturbance using 785-nm excitation wavelength. The PL effect may provide a probe for the site occupations of Ho3+ ions in widely-used BaTiO3 dielectric ceramics co-doped with Ho3+ and other dopants.
format	article
author	Da-Yong Lu Dong-Xue Guan
author_facet	Da-Yong Lu Dong-Xue Guan
author_sort	Da-Yong Lu
title	Photoluminescence associated with the site occupations of Ho3+ ions in BaTiO3
title_short	Photoluminescence associated with the site occupations of Ho3+ ions in BaTiO3
title_full	Photoluminescence associated with the site occupations of Ho3+ ions in BaTiO3
title_fullStr	Photoluminescence associated with the site occupations of Ho3+ ions in BaTiO3
title_full_unstemmed	Photoluminescence associated with the site occupations of Ho3+ ions in BaTiO3
title_sort	photoluminescence associated with the site occupations of ho3+ ions in batio3
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/f0be49632cfd49f8995ef27dda046bd0
work_keys_str_mv	AT dayonglu photoluminescenceassociatedwiththesiteoccupationsofho3ionsinbatio3 AT dongxueguan photoluminescenceassociatedwiththesiteoccupationsofho3ionsinbatio3
_version_	1718395020577341440

Photoluminescence associated with the site occupations of Ho3+ ions in BaTiO3

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