Beside the ferroelectric Curie-temperature, the ultraviolet and infrared spectra of potassium lithium niobate (K3Li2Nb 5O15, KLN) were shown to be very sensitive to the compositional variations observed in the crystals along the growth axis. The absorption edge shifts to the UV with decreasing Nb content, independently of the K/Li ratio of the crystal, while the ratio of the intensities of the OH - stretching vibrational bands at 3440 and 3520 cm-1 depends on the K/Li ratio, as well. Combining these optical spectroscopic methods with Curie-temperature measurements one can determine the crystal composition with high accuracy.
|Number of pages||4|
|Journal||Physica Status Solidi (C) Current Topics in Solid State Physics|
|Publication status||Published - Dec 1 2007|
|Event||10th Europhysical Conference on Defects in Insulating Materials, EURODIM 2006 - Milano, Italy|
Duration: Jul 10 2006 → Jul 14 2006
ASJC Scopus subject areas
- Condensed Matter Physics