Title :
Microwave Signal Processing using Dipole-Exchange Spin Waves in Ferrite Spheres
Author :
Melkov, G. ; Vasyuchka, V. ; Dzyapko, D. ; Chumak, A.
Author_Institution :
Nat. Taras Scevchenko Univ. of Kiev
Abstract :
The possibility of creating microwave signal processing devices based on ferrite spheres of yttrium iron garnet (YIG) is investigated. The principle of devices functioning is based on the effect of two-magnon relaxation reversal associated with linear scattering of oscillations of uniform magnetization precession from sample nonuniformities. Relaxation reversal is performed by parametric phase conjugation of dipole-exchange spin waves formed as a result of scattering of uniform precession from inhomogeneities. The maximal delay time for the restored signal of uniform precession was about 1.3 mus, while the maximal amplitude could exceed the initial uniform precession amplitude
Keywords :
ferrites; ferromagnetic relaxation; garnets; magnetic microwave devices; signal restoration; spin waves; YIG; dipole-exchange spin waves; ferrite spheres; linear scattering; microwave signal processing; oscillations; parametric phase conjugation; signal restoration; two-magnon relaxation; uniform magnetization precession; yttrium iron garnet; Delay effects; Ferrites; Garnets; Iron; Magnetization; Microwave devices; Scattering; Signal processing; Signal restoration; Yttrium;
Conference_Titel :
Microwave and Telecommunication Technology, 2006. CriMiCO '06. 16th International Crimean Conference
Conference_Location :
Sevastopol, Crimea
Print_ISBN :
966-7968-92-8
Electronic_ISBN :
966-7968-92-8
DOI :
10.1109/CRMICO.2006.256132
