Dielectric ceramic composition, method for the production and use thereof
A dielectric ceramic composition, a method for producing a dieelctric composition and the use of the dielectric composition are disclosed. In an embodiment a ceramic composition includes a main component with a quantity ratio Mg (1+x)(1−y) O 3+x A (1+x)y Si (1−z) D z and a remainder comprising contaminants, wherein 0.01×0.30, wherein 0.00≤y≤0.20, and wherein 0.00≤z≤1.00.
1. A ceramic composition comprising:
a main component with a quantity ratio Mg (1+x)(1−y) O 3+x A (1+x)y Si (1−z) D z ; and
a remainder comprising contaminants,
wherein A is selected from the group consisting of Zn, Ni, Co, Mn and a mixture of Zn, Ni, Co, Mn,
wherein D is selected from the group consisting of Ti, Sn, Zr and a mixture of Ti, Sn, Zr,
wherein 0.01≤x≤0.30,
wherein 0.00≤y≤0.20, and
wherein 0.00≤z≤1.00.
2. The ceramic composition according to claim 1 , wherein 0.02≤x≤0.08.
3. The ceramic composition according to claim 1 , wherein AO is a divalent oxide.
4. The ceramic composition according to claim 1 , wherein DO 2 is a tetravalent oxide.
5. The ceramic composition according to claim 1 , wherein the remainder contains production-related contaminants.
6. The ceramic composition according to claim 1 , wherein the remainder contains Al 2 O 3 , ZrO 2 , TiO 2 , Nb 2 O 5 or Ta 2 O 5 .
7. The ceramic composition according to claim 1 , wherein the remainder contains divalent elements.
8. The ceramic composition according to claim 1 , wherein the remainder contains Ca, Sr and/or Ba, in each case in a proportion of 0.3 mol % or less based on a total composition.
9. The ceramic composition according to claim 1 , wherein the ceramic composition comprises of the main component to an extent of 95 mol % or more.
10. The ceramic composition according to claim 1 ,
wherein the ceramic composition has a dielectric constant of ≤7 in a frequency range between 0.5 GHz and 100 GHz,
wherein the ceramic composition has a quality factor Q of >16000 at 10 GHz,
wherein the ceramic composition has a thermal coefficient of expansion of ≥8 ppm/K, and
wherein the ceramic composition has a specific density of ≤3.5 g/cm 3 .
11. A method for producing the ceramic composition according to claim 1 by film casting.
12. A waveguide comprising:
a dielectric comprising the ceramic composition according to claim 1 .
13. The waveguide according to claim 12 , wherein the waveguide has a frequency range between 0.5 GHz and 100 GHz.
14. A strip-line filter comprising:
a dielectric comprising the ceramic composition according to claim 1 .
15. A microwave ceramic filter comprising:
a dielectric comprising the ceramic composition according to claim 1 .
16. A dielectric resonator comprising:
a dielectric comprising the ceramic composition according to claim 1 .
17. The ceramic composition according to claim 1 , wherein A is Zn.
18. The ceramic composition according to claim 1 , wherein A is Ni.
19. The ceramic composition according to claim 1 , wherein A is Co.
20. The ceramic composition according to claim 1 , wherein A is Mn.