Wydział Chemii

Małgorzata Guzik

Magdalena Bieza

Elżbieta Tomaszewicz

Yannick Guyot

Eugeniusz Zych

Georges Boulon

2015

Optical Materials

41

21-31

10.1016/j.optmat.2014.11.013

Naukowa

Angielski

Artykuł

In this paper we report the detailed analysis of both structural characterization by XRD, DSC, Raman, SEM techniques and high resolution spectroscopic properties of microcrystalline Nd³⁺-doped La₂Mo₂O₉ (LAMOX) dilanthanum dimolybdate obtained by the conventional solid state reaction. Basing on the analysis of a series of compounds with a wide range of Nd³⁺ ion concentration we discovered that the amount of Nd³⁺ dopant substituting La³⁺ ions affects significantly on structural and spectroscopic properties. Pure Nd³⁺-doped phases with monoclinic structure (α-form, the space group P2₁) were observed for the concentration of optically active ion up to 15%. When the concentration of Nd³⁺ ions is higher a cubic structure (β-form, the space group P2₁3) starts to form. However, up to concentration of 50 mol% of the Nd³⁺ ion a mixture of the monoclinic and cubic phases has been observed. Pure cubic phase was obtained when the Nd³⁺ contents had reached 50 mol%. The spectroscopic analysis has shown that the Nd³⁺-doped monoclinic phase might be useful for application in the future as phosphors and ultra-short pulses (pico, femto) laser materials. The cubic phase could be useful to fabricate transparent ceramics and might be an important challenge for laser applications.

Nd3+ dopants, La2Mo2O9 molybdate, Monoclinic and cubic systems, Spectroscopic properties, Near-infrared luminescence

http://dx.doi.org/10.1016/j.optmat.2014.11.013

http://www.elsevier.com