Project description
Compact, efficient circulators for smart applications
Circulators are signal processing devices that enable antennas to send and receive signals. However, current circulators rely on bulky materials and permanent magnets, making them unsuitable for compact devices such as smartphones or smart watches. They also require different frequencies for signal transmission and reception, which reduces bandwidth. With the support of the Marie Skłodowska-Curie Actions programme, the FeriMag project aims to develop a new material system using ferrimagnetic insulator bilayers that demonstrate nonreciprocal spin-wave properties. By modifying magnetic properties in each layer, the system can achieve nonreciprocity without relying on bulky components. The proposed system should help develop micrometre-sized devices for 5G and 6G technologies that will enable efficient communication in applications such as autonomous vehicles and smart cities.
Objective
I aim to develop a novel material system with intrinsically nonreciprocal spin-wave dispersion relation, based on ferrimagnetic insulator bilayers. Nonreciprocity is a crucial property in signal processing, as it can be used to design e.g. circulators - devices that allow to use the same antenna for receiving and transmitting signals. Current technology uses bulk ferrite materials and permanent magnets to achieve this behavior. However, this makes the circulators too big for applications in personal devices such as mobile phones or smart watches. For this reason, the current technology uses different frequencies for transmitted and received signal, effectively halving usable bandwidth. Strong nonreciprocity has been achieved in synthetic antiferromagnets made of metallic bilayers, relying on the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction to stabilize the noncolinear configuration. However, the high attenuation in these layers prevents any real industrial application. On the other hand, the lack of easily accessible RKKY interaction in low-damping magnetic insulators, such as yttrium-iron-garnet (YIG), makes it difficult to achieve nonreciprocal properties in these materials. My idea is to overcome this lack of RKKY interaction in YIG by stabilizing the noncolinear magnetic configuration by altering the direction of the magnetic anisotropy separately in each layer. Such a material system can be exploited to design multifunctional devices integrated on micrometer-sized chips for mmWave in 5G and future 6G technologies. These devices can be subsequently utilized in e.g. autonomous vehicles, smart cities, and thus help to overcome challenges connected to dense communication networks.
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Keywords
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Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
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HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA)
MAIN PROGRAMME
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Topic(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Funding Scheme
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
HORIZON-TMA-MSCA-PF-GF - HORIZON TMA MSCA Postdoctoral Fellowships - Global Fellowships
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Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
(opens in new window) HORIZON-MSCA-2024-PF-01
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Net EU financial contribution. The sum of money that the participant receives, deducted by the EU contribution to its linked third party. It considers the distribution of the EU financial contribution between direct beneficiaries of the project and other types of participants, like third-party participants.
602 00 BRNO STRED
Czechia
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