TY  - JOUR
AU  - Feteira, A.
AU  - Elsebrock, R.
AU  - Dias, A.
AU  - Moreira, R. L.
AU  - Lanagan, M. T.
AU  - Sinclair, D. C.
TI  - Synthesis and characterisation of La0.4Ba0.6Ti0.6RE0.4 (where RE = Y, Yb) ceramics
JO  - Journal of the European Ceramic Society
VL  - 26
SN  - 0955-2219
CY  - Amsterdam [u.a.]
PB  - Elsevier Science
M1  - PreJuSER-57473
PY  - 2006
N1  - Record converted from VDB: 12.11.2012
AB  - La0.4Ba0.6Ti0.6RE0.4O3 (where RE = Y, Yb) powders were synthesised by the mixed oxide route. According to laboratory X-ray diffractometry both compositions are single-phase and can be indexed on the Pm (3) over barm. space group; however, electron diffraction suggests the occurrence of anti-phase octahedral tilting or 1: 1 ordering. Ceramics fired at 1600 degrees C for 4 h exhibit an average grain size of similar to 20 mu m. Bright field TEM images suggest the occurrence of chemical inhomogeneity in both compositions. The dc conductivities and Raman spectra are similar for both compositions; however, La0.4Ba0.6Ti0.6Y0.4O3 ceramics exhibit epsilon(r) similar to 57, quality factor (Qf) similar to 750 GHz and temperature coefficient of resonance (TCF) similar to 12 ppm/K, whereas La0.4Ba0.6Ti0.6Yb0.4O3 ceramics exhibit epsilon(r) similar to 65, Qf similar to 4500 GHz and TCF similar to 1 ppm/K. (c) 2005 Elsevier Ltd. All rights reserved.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000237833500040
DO  - DOI:10.1016/j.jeurceramsoc.2005.09.095
UR  - https://juser.fz-juelich.de/record/57473
ER  -