Structural studies of KNbO 3 in niobate glass-ceramics

Electrooptical Kerr phenomenon and Raman spectroscopy of one lithium–niobium–silicate glass-forming system

“…These regions have been called the Crystal Motifs (CMs) [1]. In different designations, the very similar hypotheses are proposed by other researchers [3][4][5][6][7] as well. Due to small sizes of the CMs it is hardly possible to observe CMs directly, and, by now, only indirect methods have been developed (for example, Mandel'shtam-Brillouin light scattering or small angle X-ray scattering), but they give too general information about the regions, like their average size or electron density.…”

Sol–gel synthesis and characterization of lead-free LNKN nanocrystalline powder

“…It should be noted that no other peaks related to organic group, such as CH 3 COO À and COO À , could be detected, which signifies that the dried gels have decomposed completely at 500 1C. In the low wave number region, a broad and strong band appears around 600 cm À1 , which could be ascribed to the characteristic vibration of the Nb-O octahedron and indicates the formation of the perovskite phase [12]. Fig.…”

Synthesis and characterization of niobium phosphate glasses containing barium and potassium

“…The shoulder at 560 cm À1 is related to Q n groups [18] and decreases as the amount of Nb 2 O 5 increases. Table 5 shows the amplitudes tendency of Raman bands as a function of Nb 2 O 5 amount.…”