This title appears in the Scientific Report :
2003
Please use the identifier:
http://dx.doi.org/10.1023/B:JECR.0000011217.93927.1a in citations.
Preparation and characterization of high density, high purity lanthanum aluminate bulk ceramics
Preparation and characterization of high density, high purity lanthanum aluminate bulk ceramics
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 inv...
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Personal Name(s): | Elsebrock, R. |
---|---|
Makovicka, C. / Meuffels, P. / Waser, R. | |
Contributing Institute: |
Elektronische Materialien; IFF-IEM |
Published in: | Journal of electroceramics, 10 (2003) S. 193 - 202 |
Imprint: |
Dordrecht [u.a.]
Springer Science + Business Media B.V
2003
|
Physical Description: |
193 - 202 |
DOI: |
10.1023/B:JECR.0000011217.93927.1a |
Document Type: |
Journal Article |
Research Program: |
Kondensierte Materie |
Series Title: |
Journal of Electroceramics
10 |
Subject (ZB): | |
Publikationsportal JuSER |
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. |