TY - JOUR
T1 - Structural analysis, optical and dielectric function of [Ba0.9Ca0.1](Ti0.9Zr0.1)O3 nanocrystals
AU - Herrera-Pérez, G.
AU - Morales, D.
AU - Paraguay-Delgado, F.
AU - Borja-Urby, R.
AU - Reyes-Rojas, A.
AU - Fuentes-Cobas, L. E.
N1 - Publisher Copyright:
© 2016 Author(s).
PY - 2016/9/7
Y1 - 2016/9/7
N2 - This work presents the identification of inter-band transitions in the imaginary part of the dielectric function (ϵ2) derived from the Kramers-Kronig analysis for [Ba0.9Ca0.1](Ti0.9Zr0.1)O3 (BCZT) nanocrystals synthesized by the modified Pechini method. The analysis started with the chemical identification of the atoms that conform BCZT in the valence loss energy region of a high energy-resolution of electron energy loss spectroscopy. The indirect band energy (Eg) was determined in the dielectric response function. This result is in agreement with the UV-Vis technique, and it obtained an optical band gap of 3.16 eV. The surface and volume plasmon peaks were observed at 13.1 eV and 26.2 eV, respectively. The X-ray diffraction pattern and the Rietveld refinement data of powders heat treated at 700 °C for 1 h suggest a tetragonal structure with a space group (P4 mm) with the average crystal size of 35 nm. The average particle size was determined by transmission electron microscopy.
AB - This work presents the identification of inter-band transitions in the imaginary part of the dielectric function (ϵ2) derived from the Kramers-Kronig analysis for [Ba0.9Ca0.1](Ti0.9Zr0.1)O3 (BCZT) nanocrystals synthesized by the modified Pechini method. The analysis started with the chemical identification of the atoms that conform BCZT in the valence loss energy region of a high energy-resolution of electron energy loss spectroscopy. The indirect band energy (Eg) was determined in the dielectric response function. This result is in agreement with the UV-Vis technique, and it obtained an optical band gap of 3.16 eV. The surface and volume plasmon peaks were observed at 13.1 eV and 26.2 eV, respectively. The X-ray diffraction pattern and the Rietveld refinement data of powders heat treated at 700 °C for 1 h suggest a tetragonal structure with a space group (P4 mm) with the average crystal size of 35 nm. The average particle size was determined by transmission electron microscopy.
UR - http://www.scopus.com/inward/record.url?scp=84986207642&partnerID=8YFLogxK
U2 - 10.1063/1.4962212
DO - 10.1063/1.4962212
M3 - Artículo
SN - 0021-8979
VL - 120
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 9
M1 - 094303
ER -