Structural, dielectric and conductivity properties of Mn2+:PVP & Ni2+:PVP polymer films

Nanocomposites of Surface‐Modified BaTiO3 Nanoparticles Filled Ferroelectric Polymer with Enhanced Energy Density

“…The increase in the dc leakage current density and dc conductivity of the nanocomposites with the treated BT, as seen in Fig. (b), is mainly caused by the high dielectric loss of PVP and ion movements introduced by PVP . As the dielectric loss measured at a certain frequency includes the polarization loss induced by polarization process and the conduction loss induced by leakage current, the dielectric loss increases due to the increase in dc leakage current density and conductivity .…”

Study of optically stimulated luminescence of Tb3+/Sm3+ doubly doped K2YF5 single crystals

“…The first four bands can be attributed to characteristic 4f-4f Tb 3 þ transitions of Tb 3 þ , namely, D 3 -7 F j and 5 D 4 -7 F j with j¼6 and 5 in each case respectively [5,11]. On the other hand, bands at 600, 650, 710 and 760 nm can be attributed to characteristic 4f-4f transitions in Sm 3 þ , namely, 4 G 5/2 -6 H j with j¼ 7/2, 9/2, 11/2 and 13/2 respectively [12,13]. Besides, the peak centered at 550 nm can be assigned to the overlap of the 5 D 4 -7 F 5 Tb 3 þ and the 4 G 5/2 -6 H 5/2 transitions of Sm 3 þ .…”

Investigation of the spectral characteristics of Sm3+ ions in lead borosilicate glass for photonic applications

“…Figure 3 represents the FTIR spectra of BPbSALf host glass. The description of the observed spectral data is given in Table 3; the peak positions were allotted to multiple vibrational modes for all the compositions [37][38][39][40][41][42]. b, the excitation spectra were highly useful and helpful for locating and assigning more levels at the higher energy side and, as such, the 6 7.…”

“…Combined vibrations of BO 4 and PbO 4 units [37] 835 Antisymmetric stretching mode of Pb-O bonds [38] 1220 BO 3 stretching vibrations [39,40] 3 | RESULTS AND DISCUSSION…”