Temperature and host dependence of the transition interference between f–f and f–d transitions of Sm<sup>2+</sup> in matlockites

Article Article scientifique Article Temperature and host dependence of the transition interference between f–f and f–d transitions of Sm<sup>2+</sup> in matlockites eng 2015 author Pal Prodipta 667994 author Hagemann Hans-Rudolf 26435 author Bill Hans 24827 author Zhang Jiahua 508405 323-329 10.1016/j.jlumin.2015.01.030 0022-2313 http://linkinghub.elsevier.com/retrieve/pii/S0022231315000332 The absorption spectra of Sm2+ doped in MFX (M=Sr, Ba; X=Cl, Br) crystals were studied within the range of 20,000–35,000 cm−1 as a function of temperature and host. The absorption bands observed were described with a simple model developed by Wood and Kaiser using group theory. The temperature and host dependence on the 7F0→5D3 Fano resonance lines were investigated. BaFCl:Sm2+ system showed a “normal” 7F0→5D3 transition at 4 K in spite of similar crystal structure and absorption profile with other MFX hosts. New Fano resonances were observed in the absorption spectra at higher energies (23,000–25,000 cm−1) for all MFX:Sm2+ systems at 4 K which persist up to room temperature. Preliminary energy level calculation showed that these resonance lines involve the interaction between higher excited 5LJ states of 4 f6configuration and 4 f55d1 configuration. Fano resonance Rare earth Sm2+ Absorption Dewey 540 38 Département de chimie physique 142 false Journal of luminescence 161 92f384b8-06fe-49bc-a556-a00c0b55fa86 Article (Published version) Restricted ref01457.pdf 2020362 application/pdf restrictedAccess Faculté des sciences / Section de chimie et biochimie / Département de chimie physique

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Temperature and host dependence of the transition interference between f–f and f–d transitions of Sm²⁺ in matlockites	Journal of luminescence			2015	755	0

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Zhang, Jiahua