Accession Number : ADA494406


Title :   New Magnetic Materials and Phenomena for Radar and Microwave Signal Processing Devices - Bulk and Thin Film Ferrites and Metallic Films


Descriptive Note : Final rept. 2 Feb 2007-30 Sep 2008


Corporate Author : COLORADO STATE UNIV FORT COLLINS DEPT OF PHYSICS


Personal Author(s) : Patton, Carl E.


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA494406


Report Date : 15 FEB 2009


Pagination or Media Count : 38


Abstract : ONR Grant ONR N00014-07-1-0597 has supported a four phase program. Under Phase (1), there were three materials thrusts, (a) hybrid pulse laser deposited and liquid phase epitaxy films of low loss cubic yttrium iron garnet (YIG) and uniaxial barium hexaferrite, (b) bulk and thick film ultra-dense fine grain pol) crystalline YIG materials, and (c) high magnetization metallic films, notably of Permalloy, iron, and FeTiN. Under Phase (2), the focus was on magnetic loss properties, both on and away from the peak in the ferromagnetic resonance (FMR) response, and the change in the microwave response at high power. Under Phase (3), the Magnetics Laboratory at Colorado State University (CSU) worked with other colleagues and collaborators in sister ONR programs to combine the magnetic systems developed and characterized at CSU with ferroelectric films and systems to achieve new multifunctional properties. Under Phase (4), the unique expertise of the CSU facility in Brillouin light scattering was applied to ferrite film systems, among others, to study the basic linear and nonlinear magnetic excitation properties in delay line structures.


Descriptors :   *RADAR , *MICROWAVES , *MAGNETIC MATERIALS , *SIGNAL PROCESSING , FERRITES , POLYCRYSTALLINE , KERR MAGNETOOPTICAL EFFECT , FERROMAGNETIC RESONANCE , YTTRIUM IRON GARNET , BARIUM FERRITES , BULK MATERIALS , SINGLE CRYSTALS , THIN FILMS , SPIN WAVES , METAL FILMS


Subject Categories : ACTIVE AND PASSIVE RADAR DETECTION & EQUIPMENT
      ELECTRICITY AND MAGNETISM
      RADIOFREQUENCY WAVE PROPAGATION


Distribution Statement : APPROVED FOR PUBLIC RELEASE