Copper oxide doped Ni—Co—Zn ferrite for very high frequency and ultra high frequency applications and process methodology
AssigneeUniversity of South Florida
InventorsPoonam Lathiya, Jing Wang
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Abstract
A soft ferrite composition comprises a ferrimagnetic ceramic material having a crystal structure and a dopant in the crystal structure, wherein the ceramic material comprises an oxide including nickel, cobalt, zinc, and iron, wherein the dopant is selected from the group consisting of copper oxides, and wherein the dopant is present in the crystal structure at 0.1 to 20 weight percent based Non a total weight of the composition. The dopant can be CuO. The copper oxide doped Ni—Co—Zn ferrite can be used for very high frequency (VHF) and ultra high frequency (UHF) applications such antennas, isolators, and circulators.
Claims12
A ferrite composition comprising:
- a ferrimagnetic ceramic material having a crystal structure and a dopant in the crystal structure,
- wherein the ceramic material comprises an oxide including nickel, cobalt, zinc, and iron, wherein the dopant is selected from the group consisting of copper oxides, and
- wherein the dopant is present in the crystal structure at 0.1 to 20 weight percent based on a total weight of the composition.
A method for forming a ferrite composition, the method comprising:
- (a) combining a first solid comprising nickel, a second solid comprising cobalt, a third solid comprising zinc, and a fourth solid comprising iron to form a mixture;
- (b) calcining the mixture;
- (c) doping the calcined mixture with a fifth solid comprising copper;
- (d) forming an article from the doped calcined mixture;
- and
- (e) sintering the article for form the ferrite composition.
Dependencies are inferred from the claim text.