US 12,431,602 B2
Short-wavelength spin wave transducer
Hadrian Aquino, South Bend, IN (US); Alexei Orlov, South Bend, IN (US); Gary H. Bernstein, South Bend, IN (US); Jonathan Chisum, South Bend, IN (US); David Connelly, South Bend, IN (US); and Wolfgang Porod, South Bend, IN (US)
Assigned to University of Notre Dame du Lac, South Bend, IN (US)
Filed by University of Notre Dame du Lac, South Bend, IN (US)
Filed on Mar. 17, 2023, as Appl. No. 18/185,756.
Claims priority of provisional application 63/269,512, filed on Mar. 17, 2022.
Prior Publication US 2023/0299451 A1, Sep. 21, 2023
Int. Cl. H01P 1/218 (2006.01); H01F 10/32 (2006.01)
CPC H01P 1/218 (2013.01) [H01F 10/32 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A device that produces ultra-small-wavelength spin waves, comprising:
a base substrate;
a transducer, comprising:
a first plane defined by a first magnetic film; and
a second plane defined by a plurality of metal strips; and
a second magnetic film, having a spin-wave phase velocity lower than the first magnetic film, wherein the second magnetic film is adjacent to the first magnetic film,
wherein the first plane and the second plane are parallel, the plurality of metal strips are configured to receive a first signal, such that the first signal excites a first spin wave in the first magnetic film, and the second magnetic film is configured to produce a second spin wave having a wavelength shorter than the first spin wave.