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 |
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.
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