Fabrication of thin bulk ceramics for microwave circulator applications

Conference · Fri Sep 01 00:00:00 EDT 1995

OSTI ID:96625

Ings, J B; Simmins, J J; May, J L ^[1]

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1. Trans-Tech, Inc., Adamstown, MD (United States); and others

Planer MMIC circulator applications require the production of thin, flat garnet, spinel, and hexagonal ferrite circulator elements. Fabrication of cira 250 {mu}m circulator elements was done by tape casting and roll compaction. For the garnet, tape cast gave equivalent results to roll compaction. For the spinel and hexaferrite materials, which undergo magnetic flocculation, roll compaction was found to be the preferred fabrication method. Roll compacted lithium ferrite resulted in higher densities and lower {triangle}H and tan{delta} than did the tape case material. Roll compacted barium hexaferrite resulted in higher densities and remanent magnetization than did the tape cast material.

• OSTI ID: 96625
• Report Number(s): CONF-940416-; TRN: 95:005317-0014
• Resource Relation: Conference: 96. annual meeting of the American Ceramic Society (ACS), Indianapolis, IN (United States), 25-28 Apr 1994; Other Information: PBD: 1995; Related Information: Is Part Of Ceramic transactions: Magnetic ceramics. Volume 47; Ghate, B.B.; Simmins, J.J. [eds.]; PB: 342 p.
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
MICROWAVE EQUIPMENT
FABRICATION
YTTRIUM OXIDES
PROCESSING
IRON OXIDES
LITHIUM OXIDES
BARIUM OXIDES
FLOCCULATION
MAGNETIZATION
CASTING
POWDERS
COMPACTING