US 12,234,192 B2
Methods of forming articles having spinel-based oxides containing magnesium, aluminum and titanium
Michael David Hill, Emittsburg, MD (US); David Bowie Cruickshank, Rockville, MD (US); David Martin Firor, Thurmont, MD (US); Iain Alexander Macfarlane, Insch (GB); Jeffrey Alan Shunkwiler, Adamstown, MD (US); and John Jianzhong Jiang, Leesburg, VA (US)
Assigned to Skyworks Solutions, Inc., Irvine, CA (US)
Filed by Skyworks Solutions, Inc., Irvine, CA (US)
Filed on Dec. 22, 2023, as Appl. No. 18/394,922.
Application 18/394,922 is a division of application No. 16/514,876, filed on Jul. 17, 2019, granted, now 11,891,340.
Claims priority of provisional application 62/702,274, filed on Jul. 23, 2018.
Prior Publication US 2024/0124361 A1, Apr. 18, 2024
Int. Cl. C04B 35/465 (2006.01); B32B 18/00 (2006.01); C04B 35/26 (2006.01); C04B 35/443 (2006.01); C04B 35/64 (2006.01); C04B 37/00 (2006.01); C04B 41/00 (2006.01); H01P 1/387 (2006.01); H01P 11/00 (2006.01)
CPC C04B 35/465 (2013.01) [B32B 18/00 (2013.01); C04B 35/265 (2013.01); C04B 35/2658 (2013.01); C04B 35/64 (2013.01); C04B 37/00 (2013.01); C04B 37/001 (2013.01); C04B 41/0072 (2013.01); H01P 1/387 (2013.01); H01P 11/00 (2013.01); C04B 35/443 (2013.01); C04B 2235/656 (2013.01); C04B 2235/763 (2013.01); C04B 2235/77 (2013.01); C04B 2235/94 (2013.01); C04B 2237/34 (2013.01); C04B 2237/765 (2013.01); C04B 2237/84 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of forming a composite article, the method comprising:
providing a pre-sintered magnetic article, the providing the pre-sintered magnetic article including pre-sintering, at a temperature higher than the co-firing temperature, a nickel zinc ferrite having a dielectric constant in a range between 5 and 10;
providing a green article contacting the pre-sintered magnetic article, the green article including one or more precursor oxides having a ratio of magnesium (Mg):aluminum (Al):titanium (Ti) of (2−x):(2x):(1−x), wherein 0<x<1; and
sintering the green article by co-firing the pre-sintered magnetic article and the green article at a co-firing temperature between 1300° C. and 1450° C., the compositions of the one or more precursor oxides being such that co-firing causes the one or more precursor oxides to form a non-magnetic spinel-structured oxide including Mg2-xAl2xTi1-xO4 having a dielectric constant between about 7 and 14.