Microwave High Dielectric Constant Materials.

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Abstract:

Additional microwave dielectric property measurements are reported for more than fifty samples of microwave high-dielectric-constant materials. Some measurements had previously been reported for these materials the additional measurements were made to obtain better values for the properties of a given material, to corroborate earlier data, or to ascertain batch-to-batch reproducibility. The physical properties of BaTi4O9 and Li2O times 1.5 TiO2 compositions have been determined. The properties of the BaTi4O9 material easily satisfy the contract guidelines, while the properties of Li2O times 1.5 TiO2 do not. The main deficiency of the Li2O times 1.5 TiO2 material is its extremely high thermal expansion coefficient, which no doubt also contributes to the poor fracture strength of the material. Author

Author(s):
Readey, D. W. ; Maguire, E. A. ; Hartwig, C. P. ; Masse, D. J. ; Paladino, A. E.
Author Organization(s):
RAYTHEON CO WALTHAM MA RESEARCH DIV
Descriptive Note:
Quarterly rept. no. 3, 1 Jan-31 Mar 70,
Pagination:
0038

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
S-1229, ECOM-0455-3
Contract/Grant Number(s):
DAAB07-69-C-0455
Monitor Series:
0455-3
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*DIELECTRICS, MICROWAVES, DIELECTRIC PROPERTIES, TITANATES, BARIUM COMPOUNDS, LITHIUM COMPOUNDS, ZINC COMPOUNDS, TITANIUM COMPOUNDS, CERAMIC MATERIALS, TEMPERATURE, OXIDES, MAGNESIUM COMPOUNDS, IRON OXIDES, ZIRCONIUM COMPOUNDS, IRON COMPOUNDS, THERMAL EXPANSION, HARDNESS, MOISTURE, SORPTION, RUPTURE, YTTRIUM COMPOUNDS, GADOLINIUM COMPOUNDS, DIOXIDES
Field(s)/Group(s):
Ceramics, Refractories and Glass, Miscellaneous Materials
Keyword(s):
CONSTANTS, DIELECTRIC PROPERTIES
Report Date:
1970 Jul 01