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Projects / Programmes source: ARIS

Reduction - reoxidation process in donor-doped BaTiO3 PTCR ceramics

Research activity

Code Science Field Subfield
2.04.01  Engineering sciences and technologies  Materials science and technology  Inorganic nonmetallic materials 

Code Science Field
T153  Technological sciences  Ceramic materials and powders 
Keywords
donor-doped BaTiO3 ceramics, PTCR, microscopy, reduction, reoxidation
Evaluation (rules)
source: COBISS
Researchers (2)
no. Code Name and surname Research area Role Period No. of publicationsNo. of publications
1.  10372  PhD Darko Makovec  Materials science and technology  Head  1999 - 2001  667 
2.  06062  Josip Puh  Materials science and technology  Researcher  1999 - 2001  14 
Organisations (1)
no. Code Research organisation City Registration number No. of publicationsNo. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  90,753 
Abstract
During the preparation of donor-doped BaTiO3 PTCR ceramics, a semiconducting (reduced) form is obtained by sintering at high temperatures, which is afterwards reoxidized during cooling. The knowledge regarding the reduction - reoxidation process is very important for understanding of the PTCR effect, as well as for engineering of BaTiO3 - based functional ceramics, especially the PTC resistors. The aim of the project proposal is to study the microstructural changes during reduction-reoxidation process in donor-doped BaTiO3 and to correlate results of this study with the electrical properties of the donor-doped BaTiO3 ceramics.
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