Experimental XRD and NMR, and molecular dynamics study of Sr containing LaAlO3 perovskite
Por:
Lima E., Villafuerte-Castrejon, ME, Saniger J.M., Ibarra-Palos A., Sánchez-Sánchez J.E., Álvarez L.J.
Publicada:
15 mar 2008
Resumen:
Strontium containing LaAlO3 perovskites, (La,Sr)AlO3, were prepared by co-precipitation method. 20% of lanthanum was replaced by strontium into LaAlO3, Structural characterization of materials through XRD and NMR techniques suggests that Sr introduction causes that unsaturated aluminum, Al-IV and Al-V appear in decrement of the amount of Al-VI. This result was confirmed by molecular dynamics simulations and a mechanism of the formation of the unsaturated aluminum is given. (C) 2008 Elsevier B.V. All rights reserved.
Filiaciones:
Lima E.:
Universidad Autónoma Metropolitana, A.P. 55-532, Av. San Rafael Atlixco No.186 Col. Vicentina, Iztapalapa, 09340 México D.F., Mexico
Villafuerte-Castrejon, ME:
Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico
Saniger J.M.:
Univ Nacl Autonoma Mexico, CCADET, Mexico City 04510, DF, Mexico
Ibarra-Palos A.:
Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico
Sánchez-Sánchez J.E.:
Univ Nacl Autonoma Mexico, Unidad Cuernavaca, Inst Mat, Cuernavaca 62220, Morelos, Mexico
Álvarez L.J.:
Univ Nacl Autonoma Mexico, Unidad Cuernavaca, Inst Mat, Cuernavaca 62220, Morelos, Mexico
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