Title :
Microwave Characterization of Bulk Ferroelectrics and Relaxors using Composite Dielectric Resonator
Author :
Veljko, S. ; Bovtun, V. ; Krupka, J. ; Nuzhnyy, D. ; Borisov, V. ; Kamba, S. ; Petzelt, J.
Author_Institution :
Inst. of Phys., ASCR, Prague
Abstract :
A method based on a composite cylindrical dielectric resonator (DR) to characterize the dielectric permittivity and losses in the microwave range of a ferroelectrics and relaxors is developed and set up. Resonance frequencies and Q-factors of the TE011 mode and TE021 mode of the composite DR versus dielectric loss of the sample with different permittivity is studied. Temperature dependences of the dielectric permittivity and loss of ferroelectric Ba0.6Sr0.4TiO3 ceramics with coarse and fine grains and of relaxor ceramics PMN and Ba2La0.5Nd0.5Ti2Nb3O15 at high frequencies and microwaves are measured.
Keywords :
Q-factor; barium compounds; dielectric losses; lanthanum compounds; lead compounds; neodymium compounds; permittivity; relaxor ferroelectrics; strontium compounds; titanium compounds; Ba0.6Sr0.4TiO3; Ba2La0.5Nd0.5Ti2Nb3O15; PMN; Q-factors; composite cylindrical dielectric resonator; dielectric losses; dielectric permittivity; ferroelectric ceramics; microwave range; relaxor ceramics; resonance frequencies; Ceramics; Dielectric loss measurement; Dielectric losses; Ferroelectric materials; Microwave theory and techniques; Permittivity; Q factor; Resonance; Resonant frequency; Tellurium;
Conference_Titel :
Physics and Engineering of Microwaves, Millimeter and Submillimeter Waves and Workshop on Terahertz Technologies, 2007. MSMW '07. The Sixth International Kharkov Symposium on
Conference_Location :
Kharkov
Print_ISBN :
1-4244-1237-4
DOI :
10.1109/MSMW.2007.4294817
