Growth and characterization of columbite CaNb2O6 high quality single crystal fiber

The Effects of Annealing Atmosphere on the Electrical Properties of MgNb2O6/ITO Heterostructures

“…and should coincide with the material properties. In the literature, the refractive index n of columbite niobium‐based ceramics are considered to be near 2, and a corresponding value K = n 2 ~4 can be expected. However, all the derived K values (Supporting information, Part II, Fig.…”

Optical floating zone method growth and photoluminescence property of MgNb2O6 crystal

“…3a and b, respectively. For the as-grown crystal, the dark brown color can be attributed to the partial reduction of Nb 5+ ions mainly originating from the NbO 6 octahedron [22,34]. The partial reduction of Nb 5+ ions caused by the oxygen vacancies results in the change in the Nb-O stretching vibration, so that the band at 905 cm −1 is broadened.…”

Sol–gel synthesis and the luminescent properties of CaNb2O6 phosphor powders

“…The electro-optical and the luminescent properties of metal niobates of LiNbO 3 [1], KNbO 3 [2], LnNbO 4 (Ln = La, Gd, and Y) [3,4] and ANb 2 O 6 (A = Ba, Sr and Ca) [5][6][7] compounds have been studied extensively. The initial investigations of calcium niobate CaNb 2 O 6 was of interest because this particular crystal has shown to be a strong source of coherent light that could be useful in holography applications [8].…”