TY - CHAP
T1 - Structural analysis of sintered products of BaTiO 3 doped with Sm 3+
AU - Hernández-Lara, J. P.
AU - Pérez-Labra, M.
AU - Gutierrez-Hernández, C. C.
AU - Barrientos-Hernández, F. R.
AU - Romero-Serrano, J. A.
AU - Hernández-Ramírez, A.
AU - Reyes-Pérez, M.
AU - Juárez-Tapia, J. C.
AU - Reyes-Cruz, V. E.
N1 - Publisher Copyright:
© The Minerals, Metals & Materials Society 2019.
PY - 2019
Y1 - 2019
N2 - Cations such as samarium (Sm) are highly soluble in barium titanate (BaTiO 3 ) and, therefore, they are used in a variety of ways to modify their properties. BaTiO 3 has a perovskite structure (ABO 3 ), where Ba occupies the A site and Ti site B. Sm is incorporated into site A, where it behaves as a donor according to the equation: Ba 2+ → Sm 3+ + e. In this research, electroceramics base BaTiO 3 doped with Sm 3 + were synthesized using the common solid-state reaction method through the electronic compensation mechanism (Ba 1−x Sm x Ti 1−x/4 O 3 ) with x = 0.001 and 0.002, % weight. The precursor powders (BaCO 3 , TiO 2 , and Sm 2 O 3 ) were dried at 200 °C for 6 h and later the physical mixtures were decarbonated at 900 °C and sintered at 1450 °C for 8 h. X-ray diffraction spectra (XRD) obtained for the samples after the decarbonation process showed the total absence of carbonates in them. The structural analysis by XRD of the samples after the sintering process it suggests a predominantly tetragonal crystalline BaTiO 3 phase. These results were confirmed with those obtained by Raman spectroscopy in the bands at 205, 265, and 305 cm −1 .
AB - Cations such as samarium (Sm) are highly soluble in barium titanate (BaTiO 3 ) and, therefore, they are used in a variety of ways to modify their properties. BaTiO 3 has a perovskite structure (ABO 3 ), where Ba occupies the A site and Ti site B. Sm is incorporated into site A, where it behaves as a donor according to the equation: Ba 2+ → Sm 3+ + e. In this research, electroceramics base BaTiO 3 doped with Sm 3 + were synthesized using the common solid-state reaction method through the electronic compensation mechanism (Ba 1−x Sm x Ti 1−x/4 O 3 ) with x = 0.001 and 0.002, % weight. The precursor powders (BaCO 3 , TiO 2 , and Sm 2 O 3 ) were dried at 200 °C for 6 h and later the physical mixtures were decarbonated at 900 °C and sintered at 1450 °C for 8 h. X-ray diffraction spectra (XRD) obtained for the samples after the decarbonation process showed the total absence of carbonates in them. The structural analysis by XRD of the samples after the sintering process it suggests a predominantly tetragonal crystalline BaTiO 3 phase. These results were confirmed with those obtained by Raman spectroscopy in the bands at 205, 265, and 305 cm −1 .
KW - BaTiO
KW - Doping
KW - Sintering
KW - Sm
UR - http://www.scopus.com/inward/record.url?scp=85064064305&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-05749-7_77
DO - 10.1007/978-3-030-05749-7_77
M3 - Capítulo
AN - SCOPUS:85064064305
T3 - Minerals, Metals and Materials Series
SP - 765
EP - 772
BT - Minerals, Metals and Materials Series
PB - Springer International Publishing
ER -