Owing to the extraordinary richness of its physical properties, congruent lithium niobate has
attracted multidecade-long interest both for fundamental science and applications. The …

Lithium niobate and lithium tantalate crystals are technologically important metal oxides with
exceptional combinations of ferroelectric, piezoelectric, acoustic, optical, and electrical …

Hydrogen is an impurity that is incorporated into LiNb1–x Ta x O3 crystals during crystal
growth or during thermal treatment in a humid atmosphere and may influence the physical …

It is well known that LiMO3 crystals contain a natural hydrogen defect, which binds to oxygen
and forms OH− defects. Since the shape of the corresponding absorption band varies …

Hydrogen incorporation during crystal growth or other treatment has attracted research
interest for a long time, but inconsistent literature data exist about the bulk hydrogen …

The proton-exchange process is an effective method of fabricating low-loss waveguides
based on LiNbO3 crystals. During proton-exchange, lithium is replaced by hydrogen and …

Hydrogen incorporation during crystal growth or other treatment has attracted research
interest for a long time, but the diffusion paths and the role of additional defect sites within …

Polar metals are rare because free carriers in metals screen electrostatic potential and
eliminate internal dipoles. Degenerate doped ferroelectrics may create an approximate …

Highly integrated and stable devices are appealing in optical communication and sensing.
This appeal arises from the presence of high refractive index contrast and high-quality …

We gain hitherto missing access to the spatio-temporal evolution of lattice distortions caused
by carrier self-trapping in the class of oxide materials-and beyond. The joint experimental …