Publicación:
Infrared and raman spectra of nanoporous SiO2 matrix filled with BaTiO3 nanoparticles

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Fecha
2020
Autores
Arroyo G.
Bustos J.A.
Castillo Y.
Castro-Sesquen Y.E.
Espinoza C.
Friedland J.
Gamboa R.
García H.H.
Gavidia C.M.
Gilman R.H.
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Trans Tech Publications Ltd
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Abstracto
Nanocomposite in the form of a porous matrix SiO2 with average pore size of 320 nm filled with barium titanate nanoparticles in paraelectric cubic phase was obtained. Shift of the stretching vibration of Si-O-Si to higher frequencies caused by increased strengthening of the network in the matrices has been observed. Also demonstrated that decrease in the intensity of the absorption relating to Si-O(H) stretching vibration relative to Si-O(-Si) stretching vibration. Raman scattering spectra demonstrate the presence of both a cubic and a tetragonal ferroelectric crystalline phase in the filler nanoparticles. Thus, the mechanical deformation of nanoparticles in the pores of the matrix can lead to a change in the crystalline phase of the filler. © 2020 Trans Tech Publications Ltd, Switzerland.
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SiO2 porous matrix
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