Thick yttrium-iron-garnet (YIG) films produced by pulsed laser deposition (PLD) for integration applications

Buhay, H.; Adam, J.D.; Daniel, Michael R.; Doyle, N; Driver, M.C.; Eldridge, G.W.; Hanes, M.H.; Messham, R.L.; Sopira, M. M.

doi:10.1109/20.489787

Cited by 37 publications

(8 citation statements)

References 5 publications

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“…Increased saturation magnetization was observed in the YIG/BIG heterostructures compared to that of single layer films [11]. Thick ($50 mm) epitaxial YIG films with a linewidth of 5.7 Oe were deposited on (111) GGG substrates at a high rate by Buhay et al [12]. In the same paper, the deposition of polycrystalline thick (50-100 mm) films on gold-coated (1 0 0) Si wafers followed by rapid thermal annealing was reported.…”

Section: Thin Film Processing Using Pld and Atladmentioning

confidence: 98%

Recent advances in processing and applications of microwave ferrites

Harris

Geiler

Chen

et al. 2009

Journal of Magnetism and Magnetic Materials

758

226

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Section: Thin Film Processing Using Pld and Atladmentioning

confidence: 98%

Recent advances in processing and applications of microwave ferrites

Harris

Geiler

Chen

et al. 2009

Journal of Magnetism and Magnetic Materials

758

226

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“…Efforts in these directions continued through the 1990s, but seemed to result in more challenges identified than problems solved. As a partner in a Defense Advanced Research Projects Agency (DARPA)-sponsored industrial consortium, Westinghouse deposited microwave-quality polycrystalline ferrite on semiconductor substrates [91]. The main problems are thermal expansion mismatches between film and substrate and the need for post-deposition annealing to crystallize amorphous phases.…”

Section: Ferrite Materialsmentioning

confidence: 99%

Ferrite devices and materials

Adam

Davis

Dionne

et al. 2002

IEEE Trans. Microwave Theory Techn.

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649

224

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The development and current status of microwave ferrite technology is reviewed in this paper. An introduction to the physics and fundamentals of key ferrite devices is provided, followed by a historical account of the development of ferrimagnetic spinel and garnet (YIG) materials. Key ferrite components, i.e., circulators and isolators, phase shifters, tunable filters, and nonlinear devices are also discussed separately.

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“…The other major factor in MSW delay line total insertion loss is the coupling factor which is typically on the order of 3-4 dB for broadband devices but can be practically reduced to about 1dB using band limited MSW transduction techniques. Ferrite material start nonlinear power limiting at higher power levels (above power threshold) due to parametric pumping of above-threshold RF energy to half-frequency magnetic spinwaves in the ferrite substrate [15]. This power threshold is directly proportional to the spinwave line width of the material ( H k ), and the thickness of the YIG film.…”

Section: High Linearity Magnetostatic Wave Delay Linementioning

confidence: 99%

Microwave Magnetics and Considerations for Systems Design

et al. 2021

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The adoption of non-linear magnetic devices in Radio Frequency (RF) systems has been relatively slow due to their unique characteristics that do not lend themselves well to traditional design tools and methodologies. Herein we present the practical considerations in employing such devices in modern RF system design with an emphasis on realizable improvements in performance and adaptability in addition to the common design methodology that has been adopted to account for their unique behavior. Specifically, this article begins by presenting how a standalone nonlinear device such as a Frequency Selective Limiter (FSL) can enable a higher-level subsystem such as the Frequency Selective Canceller (FSC). This discussion sheds light on the importance of characterizing the behavior of an FSL and how this behavior is different from other, more traditional RF components such as a Pin Diode Limiter, as explained in the second part of the article. Lastly, a Magnetostatic Wave (MSW) delay line that leverages the recent advancements in non-linear magnetic device design is introduced in order to provide an attractive alternative to traditional delay lines. A more complete understanding of system-level performance benefits and device-level functionality will undoubtedly facilitate the widescale deployment of nonlinear magnetic devices to help mitigate spectrum congestion challenges faced by modern and future RF systems.INDEX TERMS Frequency selective limiter, analog signal processing, magnetostatic surface waves, receiver front-end, linearization techniques, delay lines.

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Thick yttrium-iron-garnet (YIG) films produced by pulsed laser deposition (PLD) for integration applications

Cited by 37 publications

References 5 publications

Recent advances in processing and applications of microwave ferrites

Recent advances in processing and applications of microwave ferrites

Ferrite devices and materials

Microwave Magnetics and Considerations for Systems Design

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