LiMg(IO 3 ) 3 : an excellent SHG material designed by single-site aliovalent substitution
An excellent second harmonic generation (SHG) material, LiMg(IO ) (LMIO), has been elaborately designed from Li M (IO ) (M = Ti, Sn, and Ge) by aliovalent substitution of the central M cation followed by Wyckoff position exchange. The new structure sustains the ideal-alignment of (IO ) groups. Impor...
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Published in | Chemical science (Cambridge) Vol. 10; no. 47; pp. 10870 - 10875 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
Published |
England
Royal Society of Chemistry
21.12.2019
|
Subjects | |
Online Access | Get full text |
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Summary: | An excellent second harmonic generation (SHG) material, LiMg(IO
)
(LMIO), has been elaborately designed from Li
M
(IO
)
(M
= Ti, Sn, and Ge) by aliovalent substitution of the central M
cation followed by Wyckoff position exchange. The new structure sustains the ideal-alignment of (IO
)
groups. Importantly, LMIO exhibits an extremely strong SHG effect of roughly 24 × KH
PO
(KDP) under 1064 nm laser radiation or 1.5 × AgGaS
(AGS) under 2.05 μm laser radiation, which is larger than that of α-LiIO
(18 × KDP). The replacement of M
with Mg
without d-d electronic transitions induces an obviously larger band gap (4.34 eV) with a short absorption edge (285 nm). This study shows that single-site aliovalent substitution provides a new synthetic route for designing SHG materials. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 2041-6520 2041-6539 |
DOI: | 10.1039/c9sc04832d |