US 11,817,242 B2
Magnonic electromagnetic radiation sources with high output power at high frequencies
Jiamian Hu, Middleton, WI (US); Shihao Zhuang, Madison, WI (US); and Mingrui Li, Madison, WI (US)
Assigned to Wisconsin Alumni Research Foundation, Madison, WI (US)
Filed by Wisconsin Alumni Research Foundation, Madison, WI (US)
Filed on Nov. 17, 2021, as Appl. No. 17/528,937.
Prior Publication US 2023/0154662 A1, May 18, 2023
Int. Cl. H01F 10/32 (2006.01); H01F 41/30 (2006.01); G01N 21/17 (2006.01); G02F 1/11 (2006.01); G02B 6/293 (2006.01)
CPC H01F 10/3259 (2013.01) [G01N 21/1702 (2013.01); G02B 6/29301 (2013.01); G02F 1/11 (2013.01); H01F 10/3254 (2013.01); H01F 41/302 (2013.01); Y10T 428/32 (2015.01)] 18 Claims
OG exemplary drawing
 
1. A heterostructure comprising:
a metal layer; and
a superlattice comprising a series of adjacent bilayers disposed along a length axis, each bilayer comprising a magnetic insulator layer comprising a magnetic insulator selected from MgAl0.5Fe1.5O4, Y3Fe5O12, and Gd3Fe5O12, and a dielectric layer comprising MgAl2O4, wherein the magnetic insulator layers in the superlattice have equal thicknesses and the dielectric layers in the superlattice have equal thicknesses, and further wherein the superlattice is either directly adjacent to the metal layer or separated from the metal layer by an intervening layer.