Filters
cris logo
-
New search Filters
Select from list
Displayed from Show more
You have reached the maximum number of displayed search results.
All results displayed
No results are available for the search performed
Displayed from
You have reached the maximum number of displayed search results.
All results displayed
Loading results
Obtaining statistical data

Projects / Programmes source: ARIS

Influence of the crystal structure modifications of high-permittivity microwave materials on dielectric properties

Edit
Research activity

Code Science Field Subfield
1.04.03  Natural sciences and mathematics  Chemistry  Inorganic chemistry 

Code Science Field
P260  Natural sciences and mathematics  Condensed matter: electronic structure, electrical, magnetic and optical properties, supraconductors, magnetic resonance, relaxation, spectroscopy 
P250  Natural sciences and mathematics  Condensed matter: structure, thermal and mechanical properties, crystallography, phase equilibria 
Keywords
microwave ceramics, dielectrics, crystal structure, dielectric losses, temperature coefficient, perovskites, pyrochlore
Evaluation (rules)
source: COBISS
Evaluation of bibliographic research performance indicators according to ARIS methodology
Citations Citations for bibliographic records in COBIB.SI that are linked to records in citation databases
source: WoS source: Scopus source: COBISS
Researchers (1)
no. Code Name and surname Research area Role Period No. of publications
1.  11991  PhD Matjaž Valant  Materials science and technology  Head  1998 - 2001  607 
Organisations (1)
no. Code Research organisation City Registration number No. of publications
1.  0106  Jožef Stefan Institute  Ljubljana  5051606000  90,664 
Abstract
The aim of the research project is to explain the influence of the crystal structure modifications of Ba6-xR8+2/3xTi18O54 (R=La-Gd) solid solutions on the basic polarization mechanisms. In the first part of the work investigations will be focused mainly on the crystal structure determinations of solid solutions containing various rare earth elements and different compositions along the solid solubility region. The influence of temperature on crystal structure and dielectric properties will be studied as well. A structural feature that will be closely examined is the corner-sharing TiO6 octahedral network. Presumably, it is essentially responsible for the variations in the anharmonicity of the crystal structure and consequently, for the variations in the dielectric losses and temperature coefficient of the permittivity. Findings obtained through the work on that research project will be generalized on the related crystal structures (pyrochlores, perovskites) that consist corner-sharing TiO6 octahedral network. Understanding of the fundamental structural mechanisms will enable more efficient and planned development of new high-permittivity microwave materials.
Confirmation required
Views history
Favourite