Title :
Synthesis and structural relationship of complex tantalum phosphates in the flux system K2O-P2O5-Ta2O5-MoO3
Author :
Babaryk, A.A. ; Odynets, I.V. ; Baumer, V.N. ; Slobodyanik, N.S. ; Khainakov, S. ; Hoffmann, S.
Abstract :
Single crystals of K2Ta4O11 (I), K(TaO2)2PO4 (II) and K3Ta5O11(PO4)2 (III) were synthesized by flux-aided method in the pseudo-quaternary system K2O-P2O5-Ta2O5-MoO3. Tight interrelation of their crystal structures has been found via X-ray diffraction study. Experimental solid-state band gap measurements revealed its semiconductor nature corroborated with DFT calculations. Local structure of PO4 groups in (II) and (III) compounds was probed with 31P MAS NMR spectroscopy.
Keywords :
Compounds; Crystals; Nuclear magnetic resonance; Photonic band gap; Semiconductor device measurement; Solids; density functional theory; intergrowth structures; phosphate; solid state NMR; tantalum; x-ray diffraction;
Conference_Titel :
Oxide Materials for Electronic Engineering (OMEE), 2012 IEEE International Conference on
Conference_Location :
Lviv, Ukraine
Print_ISBN :
978-1-4673-4491-3
DOI :
10.1109/OMEE.2012.6464783
