Determination of erbium and neodymium dopants in bismuth tellurite optical crystals by graphite furnace atomic spectrometry techniques

Analysis of yttrium aluminium borate crystals by solution-based methods: inductively coupled plasma atomic emission spectrometry and flame atomic absorption spectrometry

“…Matrix matching and standard addition methods were used for calibration. (3) Quatitation of some dopants (i.e., Cr, Fe, Ni, Cu, Mo, V, Er and Nd) in bismuth tellurite optical crystals by graphite furnace atomic absorption spectrometry (GFAAS) [14][15][16][17][18][19] and ICP-AES with pneumatic nebulization [16][17][18][19] and electrothermal vaporization (ETV) sample introduction methods [16]. Study on spectral and nonspectral interferences.…”

Model calculation of the characteristic mass for convective and diffusive vapor transport in graphite furnace atomic absorption spectrometry

“…In previous papers from this laboratory, GFAAS methods were developed [21][22][23][24][25][26] for the determination of a couple of additive/trace elements in bismuth tellurite optical crystals. In these analyses, the application of mini-flow of the internal furnace gas during atomization in an end-heated graphite tube was advantageous compared to stopped flow conditions, due probably to the decreased condensation of analyte and matrix vapors in the cooler parts of the graphite furnace (e.g., the gas phase, a graphite wall and the tube ends).…”

“…This general characteristic of the mini-flow has been suggested in a few works [27,28], partly in connection with THGAs. This condition was also found to be advantageous for decreasing the degree of halide interference effects [22][23][24][25], and also for obtaining more linear calibration curves with standard THGA tubes [24,26].…”

Optical absorption and luminescence of Ho3+ ions in Bi2TeO5 single crystal

“…The Bi 3+ and Te 4+ lattice sites provide suitable environments for hosting several types of dopants [3,4]. The crystal structure of Bi 2 TeO 5 is orthorhombic (Abm2) and can be interpreted as a 2 · 3 · 1 superstructure of the CaF 2 structure with 1/ 6 empty oxygen positions [5].…”

“…Laser active dopants, as the trivalent rare earth ions, can be introduced into the Bi 2 TeO 5 lattice with crystal/melt segregation coefficients close to unity [3,4]. They occupy different Bi(1), Bi (2), and Bi(3) lattice sites surrounded by 8, 7, and 7 oxygens, respectively (see terminology and structural details in Ref.…”