TY  - JOUR
AU  - Elsebrock, R.
AU  - Makovicka, C.
AU  - Meuffels, P.
AU  - Waser, R.
TI  - Preparation and characterization of high density, high purity lanthanum aluminate bulk ceramics
JO  - Journal of electroceramics
VL  - 10
SN  - 1385-3449
CY  - Dordrecht [u.a.]
PB  - Springer Science + Business Media B.V
M1  - PreJuSER-40847
SP  - 193 - 202
PY  - 2003
N1  - Record converted from VDB: 12.11.2012
AB  - In this work some methods for preparation of lanthanum aluminate bulk ceramics were compared. High purity lanthanum aluminate LaAlO3 (LAO) ceramic samples of high density (>94%) were prepared via three different routes and the morphology, chemical and electrical properties of the samples were investigated. For high purity samples a sol-gel route A. Douy and P. Odier [1] and a thermal nitrate decomposition route Shaji Kumar et al. [2] were introduced to reduce unintentional doping by the preparation process to a minimum. As a standard route the mixed oxide process was chosen. In sol-gel and nitrate decomposition procedures the formation temperature of LaAlO3 from its oxides was lowered by using reactive gamma-alumina from the pyrolysis of initial aluminium nitrate instead of commonly used alpha-alumina (corundum) in the mixed oxide process. No commercial gamma-alumina of sufficient purity is known.Differences in the electrical behaviour of the samples were measured, indicating some correlations between the samples' different morphology, purity and its' preparation parameters.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000187928000005
DO  - DOI:10.1023/B:JECR.0000011217.93927.1a
UR  - https://juser.fz-juelich.de/record/40847
ER  -