Accession Number : AD0286051

Title :   GROWTH OF HEXAGONAL FERRITE SINGLE CRYSTALS FOR APPLICATION AT MICROWAVE AND MILLIMETER-WAVE FREQUENCIES

Corporate Author : ARMY RESEARCH OFFICE WASHINGTON D C

Personal Author(s) : TAUBER,ARTHUR ; SAVAGE,R.O. JR.

Report Date : DEC 1962

Pagination or Media Count : 1

Abstract : The ever increasing traffic of the communications medium combined with an urgent need for secure tran mission of messages has directed attention to broadcasting at higher frequencies. The lower range of the microwave spectrum has been intensively exploited during the last twenty years. Attention is now focused at the upper microwave and millimeter wave spectrum, 10 to 70 kilomegocycles/sec. Before devices and systems can be designed components must be found that can operate at these higher frequencies. The synthesis of a series of single crystal hexagonal ferrites potentially useful in several different devices at microwave and millimeter wave frequencies is described. Some of the unique intrinsic properties which make these crystals applicable at these frequencies were measured and are reported. Several devices were constructed and operated with these crystals. The experimental results and potentialities of such devices are described. (Author)

Descriptors :   *FERRITES, *MICROWAVE FREQUENCY, *SINGLE CRYSTALS, BARIUM COMPOUNDS, COMMUNICATION SYSTEMS, FERROMAGNETIC MATERIALS, MAGNETIC PROPERTIES, MICROWAVE SPECTROSCOPY, PREPARATION

Distribution Statement : APPROVED FOR PUBLIC RELEASE