Projects / Programmes
Nanostructural engineering of semicoducting materials
Code |
Science |
Field |
Subfield |
2.04.00 |
Engineering sciences and technologies |
Materials science and technology |
|
Code |
Science |
Field |
T153 |
Technological sciences |
Ceramic materials and powders |
semiconducting materials, exploiting 2D nanostuctured phases in bottom-up design of materials, nanostructural engineering
Researchers (5)
no. |
Code |
Name and surname |
Research area |
Role |
Period |
No. of publicationsNo. of publications |
1. |
06627 |
PhD Slavko Bernik |
Materials science and technology |
Researcher |
2005 - 2008 |
621 |
2. |
19029 |
PhD Nina Daneu |
Materials science and technology |
Researcher |
2005 - 2008 |
424 |
3. |
02556 |
PhD Goran Dražić |
Materials science and technology |
Researcher |
2005 - 2008 |
1,029 |
4. |
15654 |
PhD Matej Andrej Komelj |
Materials science and technology |
Researcher |
2005 - 2008 |
176 |
5. |
10083 |
PhD Aleksander Rečnik |
Chemistry |
Head |
2005 - 2008 |
651 |
Organisations (1)
no. |
Code |
Research organisation |
City |
Registration number |
No. of publicationsNo. of publications |
1. |
0106 |
Jožef Stefan Institute |
Ljubljana |
5051606000 |
90,753 |
Abstract
Physical properties of ceramic materials are strongly influenced by the inherent proprerties of the bulk crystalline material, by grain boundary effects and the effects caused by the presence of fault structures. Out of these, special grain boundaries appear to be of the top importance from both the microstructural and the compositional point of view. Special boundaries are planar faults, which often occupy only one atomic monolayer in slightly altered structural environment and different chemical composition compared to the adjacent layers of bulk crystal phase. Special boundaries form during crystal growth and cannot be produced by deformation. As recently shown in several polycrystalline materials, these boundaries are in fact responsible for anisotropic and exaggerated grain growth. The influence of special boundaries on microstructure development of the ceramic and consequently on the physical properties is often observed, and yet the knowledge about the nucleation mechanisms or the atomistic structure and chemistry of such structural peculiarities has not evolved. One of the main reasons is the availability of the instrumentation that allows the atomic level studies of structure and composition of special boundaries and interfaces, combined with an appropriate expertise in materials science. In order to determine the mechanism of their formation one must commence not only with the information on the preparation conditions under which such a phenomenon takes place, but moreover with a fundamental knowledge about their atomic structure and chemistry. The major task within the proposed research will be to correlate atomistic structure and chemistry of special boundaries with the exaggerated grain growth and the final physical properties of the material. As shown in the following, bottom-up approach will provide the means for nanostructural engineering of electronic devices based on these materials.