RT Journal Article
T1 Spark plasma versus conventional sintering in the electrical properties of Nasicon-type materials
A1 Pérez Estébanez, Marta
A1 Isasi Marín, Josefa
A1 Rivera Calzada, Alberto Carlos
A1 León Yebra, Carlos
A1 Nygren, Mats
AB Li1-xMxTi2-x(PO4)3 powders with x = 0 and 0.3 and M = Al, Cr and Fe have been sintered by conventional sintering (CS) and Spark Plasma Sintering (SPS), and the electrical properties have been compared. The use of SPS allows preparing samples with higher density at lower temperature and shorter time than the CS, avoiding segregation of secondary phases and with reduced crystallite size. Thei ntroduction of aluminum, chromium and iron in the LiTi2(PO4)3 (LTP) clearly enhances ionic conductivity even if the samples have similar densities. Despite the different level of density reached with CS and SPS, the activation energies of dc and grain boundary contributions are very similar and the differences in ionic conductivity are determined by pre-exponential factors. The samples produced by SPS showed a well-defined grain boundary meaning a more homogenous electrical contact.
PB Elsevier
SN 0925-8388
YR 2015
FD 2015
LK https://hdl.handle.net/20.500.14352/100016
UL https://hdl.handle.net/20.500.14352/100016
LA eng
NO Pérez-Estébanez, M., et al. «Spark Plasma versus Conventional Sintering in the Electrical Properties of Nasicon-Type Materials». Journal of Alloys and Compounds, vol. 651, diciembre de 2015, pp. 636-42. https://doi.org/10.1016/j.jallcom.2015.08.126.
NO Ministerio de Ciencia e Innovación (España)
NO Fundación Neurociencias y Envejecimiento
DS Docta Complutense
RD 13 abr 2025