Commensurate Nb 2 Zr 5 O 15 : Accessible Within the Field Nb 2 Zr x O 2 x +5 After All

Composition Space of the (CuO, (1)/(2)Nb(2)O(5))/(HF)(x)().pyridine/H(2)O System. Structure and Synthesis of [pyH(+)](2)[CuNb(2)(py)(4)O(2)F(10)](2-) and CuNb(py)(4)OF(5).

Single crystals of [pyH(+)](2)[CuNb(2)(py)(4)O(2)F(10)](2)(-) and CuNb(py)(4)OF(5) were synthesized in a (HF)(x)().pyridine/pyridine/water solution (150 degrees C, 24 h, autogeneous pressure) using CuO and Nb(2)O(5) as reagents. The compound [pyH(+)](2)[CuNb(2)(py)(4)O(2)F(10)](2)(-) contains clusters of [CuNb(2)(py)(4)O(2)F(10)](2)(-) anions linked through N-H(+).F hydrogen bonds to the [pyH(+...

Short - range structure of proton conducting perovskite BaIn x Zr 1 − x O 3 − x / 2 ( x = 0 − 0 . 75 )

Maths Karlsson, Aleksandar Matic, Christopher S. Knee, Istaq Ahmed, Sten Eriksson, and Lars Börjesson Department of Applied Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden Department of Chemistry, Göteborg University, SE-412 96 Göteborg, Sweden Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-412 96 Göteborg, Sweden (Dated: February...

Spectroscopy and frequency upconversion in Nd 3 + - doped TeO 2 – TiO 2 – Nb 2 O 5 glass

A vibrational spectroscopic study of the silicate mineral normandite--NaCa(Mn(2+),Fe(2+))(Ti,Nb,Zr)Si2O7(O,F)2.

We have studied the mineral normandite using a combination of scanning electron microscopy with energy dispersive spectroscopy and vibrational spectroscopy. The mineral normandite NaCa(Mn(2+),Fe(2+))(Ti,Nb,Zr)Si2O7(O,F)2 is a crystalline sodium calcium silicate which contains rare earth elements. Chemical analysis shows the mineral contains a range of elements including Na, Mn(2+), Ca, Fe(2+) a...

Electrical fixing of photorefractive holograms in Sro . 7 5 Bao . 25 Nb 2 O 6

Volume holograms recorded in photorefractive materials can find important applications in optical memories and optical computing systems. One problem with a photorefractive hologram is that it gets erased by the readout light. Nondestructive readout can be achieved by hologram fixing, and several fixing methods have been reported. Thermal fixing of holograms was demonstrated in LiNbO3,' Bi1 2Si...