Magnetostatic propagation in thin films of liquid phase epitaxy YIG

Webb, David J.; Vittoria, C.; Lubitz, P.; Lessoff, H.

doi:10.1109/tmag.1975.1058917

Cited by 21 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These losses determine the distance which the spin waves can travel before they become too small to be detected. There have been both experimental and theoretical studies of propagation loss [27][28][29][30][31][32]. A phenomenological loss theory determines the upper and lower limits of propagation losses for different propagation modes of MSSW [32,33].…”

Section: ×10mentioning

confidence: 99%

See 1 more Smart Citation

Characterization of magnetostatic surface spin waves in magnetic thin films: evaluation for microelectronic applications

et al. 2013

View full text Add to dashboard Cite

equally to this work.Abstract The authors have investigated the possibility of utilizing spin waves for inter-and intra-chip communications, and as logic elements using both simulations and experimental techniques. Through simulations it has been shown that the decay lengths of magnetostatic spin waves are affected most by the damping parameter, and least by the exchange stiffness constant.The damping and dispersion properties of spin waves limit the attenuation length to several tens of microns. Thus, we have ruled out the possibility of inter-chip communications via spin waves.Experimental techniques for the extraction of the dispersion relationship have also been demonstrated, along with experimental demonstrations of spin wave interference for amplitude modulation. The effectiveness of spin wave modulation through interference, along with the capability of determining the spin wave dispersion relationships electrically during manufacturing and testing phase of chip production may pave the way for using spin waves in analog computing wherein the circuitry required for performing similar functionality becomes prohibitive.2

show abstract

Section: ×10mentioning

confidence: 99%

“…experimental and theoretical studies of propagation loss [27][28][29][30][31][32]. A phenomenological loss theory determines the upper and lower limits of propagation losses for different propagation modes of MSSW [32,33].…”

Section: (B)mentioning

confidence: 99%

Characterization of magnetostatic surface spin waves in magnetic thin films: evaluation for microelectronic applications

et al. 2013

View full text Add to dashboard Cite

show abstract

“…The former is due to many technical reasons such as matching of transducers, 17 dissipation of cables and connectors, and so on, and it is definitely independent of the length and the power level of the input pulse. On the other hand, the propagation loss is correlated with the intrinsic properties of exploited material, 18 namely delay time and magnetic relaxation.…”

Section: Magnetostatic Soliton Propagation At Microwave Frequency In mentioning

confidence: 99%

Magnetostatic soliton propagation at microwave frequency in magnetic garnet films

Gasperis¹,

Marcelli²,

Miccoli³

1987

Phys. Rev. Lett.

110

View full text Add to dashboard Cite

The linearity of the power response of yttrium iron garnet films to a microwave pulse having length shorter than the delay time characteristic of the specimen is investigated. In particular, a threshold is found above which output power increases with respect to standard linear trend. The above novel effect, analyzed in some detail on five epilayers of different thicknesses, cannot be explained in terms of usual nonlinear processes. An interpretation in terms of soliton excitation, accounting for the existence in the system of both intrinsic nonlinearity and dispersion, is proposed. PACS numbers: 75.30.Ds, 76.50.+g, 85.70.Ge Presently, solitons are an active field of interest in both fundamental and applied solid-state physics. The mathematical advances in finding out analytical solutions to a certain number of nonlinear dispersive wave functions 1 have given a powerful tool to their study and characterization.As is well established, a soliton results as a fairly delicate balance between the dispersion (which forces the signal to spread out) and the nonlinearity (which forces the signal to steepen) of the system under investigation. Apart from the interest in basic research, the remarkable applications of soliton propagation in optical fibers, 2 nonlinear transmission lines, 3 and Josephson junctions 4 (just to mention a few of them) seem to justify the search for solitons in media which are inherently both dispersive and nonlinear. Some systems in the field of acoustical 5 and radio-frequency signal transmission are in principle suitable to fit those requirements. Among them, the analysis of possible soliton excitation in a magnetostatic wave (MSW) device such as a dispersive delay line 6 operating at microwave frequency is particularly appealing. From a theoretical standpoint, a dipolar model dealing with the nonlinear properties of nonexchange MSW's propagating in a low-loss magnetic film of yttrium iron garnet (YIG) has been recently developed. 7 To account only for nonlinearities produced by self-action processes, a nonlinear Schrodinger equation describing the evolution of envelope solitons has been derived in the weak nonlinearity approximation. In this way, expected threshold powers for the onset of selfmodulation and self-channeling have been derived.Furthermore, through an analysis of the unique experimental data available in current literature, it turns out that attempts to detect purely magnetostatic solitons in YIG films have been so far unsuccessful. 8 In this framework, some nonlinear phenomena, interpreted in terms of multisoliton excitation as deduced by our analyzing the time envelope of an output pulsed signal, 8,9 have been reported. In order to get that result, the operational frequency had to fall within a few defined regions of the spectrum close to so-called repulsion gaps. 10 According to the theory and experimental findings, 11 resolvable gaps can be observed under specific conditions of spin pinning whenever the dipolar and exchange energy terms are comparable in magnitude. From an ...

show abstract

Relaxation Phenomena of Magnetic Excitations in Ferromagnetic Media

Никитов¹

1994

Advances in Chemical Physics

View full text Add to dashboard Cite

Magnetostatic propagation in thin films of liquid phase epitaxy YIG

Cited by 21 publications

References 3 publications

Characterization of magnetostatic surface spin waves in magnetic thin films: evaluation for microelectronic applications

Characterization of magnetostatic surface spin waves in magnetic thin films: evaluation for microelectronic applications

Magnetostatic soliton propagation at microwave frequency in magnetic garnet films

Relaxation Phenomena of Magnetic Excitations in Ferromagnetic Media

Contact Info

Product

Resources

About