Accession Number:

ADA379187

Title:

Multilayer Magnetic Material Structures for Ultrahigh Frequency Integrated Devices

Descriptive Note:

Final rept. 11 Aug 1996-31 Dec 1999

Corporate Author:

CALIFORNIA UNIV IRVINE DEPT OF PHYSICSAND ASTRONOMY

Personal Author(s):

• Mills, D. L.
• Tsai, C. S.

Report Date:

2000-03-23

Pagination or Media Count:

22.0

Abstract:

This final report summarizes the advances and developments associated with the ultra-high microwave device program at the University of California, Irvine. The program was a collaborative effort of researchers in the Department of Physics and Astronomy, and the Department of Electrical and Computer Engineering. We developed the means of fabricating and characterizing state of the art M3E grown semiconductingferromagnetic Fe hybrid structures. Chemical etching methods allowed us to create device structures, with microstrips of ferromagnetic Fe on the GaAs substrates. The coupling between microwaves propagating in the GaAs, and spin excitations in the Fe microstrip were measured and quantified. A high frequency notch filter was devised, which operated up to 32.5 GHz. Our theoretical effort developed quantitative theories of idealized device structures.

Descriptors:

• *INTEGRATED SYSTEMS
• *MICROWAVE EQUIPMENT
• *FERROMAGNETIC MATERIALS
• *ULTRAHIGH FREQUENCY
• EXCITATION
• GALLIUM ARSENIDES
• THIN FILMS
• SUBSTRATES
• SEMICONDUCTORS
• ETCHING
• IRON COMPOUNDS
• NOTCH FILTERS

Subject Categories:

• Electrical and Electronic Equipment
• Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE