Journal Article

PUBDB-2020-04314

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png VIS- VUV spectroscopy of $K_5GdLi_2F_{10}$: Tb, Eu and temperature activated energy transfer from terbium to europium

Solarz, P. (Corresponding author)Extern*

2021
ScienceDirect Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.jallcom.2020.157459

Abstract: K$_5$GdLi$_2$F$_{10}$ compound doped with Tb$^{3+}$ and Eu$^{3+}$ was synthetized. The excited states of these lanthanide ions were analyzed up to VUV range at 125,000 cm$^{−1}$ (80 nm). Strong coupling between terbium and europium was found. The energy transfer processes from terbium to europium mainly depend on fast migration. The lifetime of $^5$D$_4$ multiplet in the presence of europium is shorter by about 30% in comparison to singly doped terbium compounds. The character of the decay curve of the $^5$D$_4$ multiplet is mono-exponential. Non-exponential character was discovered in the case of $^5$D$_1$ europium multiplet in the presence of terbium. The nature of this quenching was determined to be dipole-dipole interaction with critical distance 9.96 Å. The energy transfer is temperature dependent.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 899 - ohne Topic (POF4-899) (POF4-899)

Experiment(s):

1. DORIS Beamline I (DORIS III)

Appears in the scientific report 2021

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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