Granted Patent
B2
US 12,406,788 · App. 17/771,683 · Granted Sep 2, 2025
M-type hexaferrite comprising antimony
Assignee:
ROGERS CORPORATION
View Patent ↗
Loading inventors, assignments & file history…
Abstract
In an aspect, a ferrite composition can comprise a SbCo—M-type ferrite having the formula: Me 1-x Sb x Co y+x M′ y Fe 12-x-2y O 19 , wherein Me is at least one of Sr, Pb, or Ba; M′ is at least one of Ti, Zr, Ru, or Ir; x is 0.001 to 0.3; and y is 0.8 to 1.3. In another aspect, a method of making the ferrite composition comprises mixing ferrite precursor compounds comprising Me, Fe, Sb, Co, and M′; and sintering the ferrite precursor compounds in an oxygen atmosphere to form the SbCo—M-type ferrite. In yet another aspect, a composite comprises the ferrite composition and a polymer. In still another aspect, an article comprises the ferrite composition.
Claims (29)
1. A ferrite composition comprising a SbCo—M-type ferrite having the formula:
Me 1-x Sb x Co y+x M′ y Fe 12-x-2y O 19
wherein Me is at least one of Sr, Pb, or Ba; M′ is at least one of Ti, Zr, Ru, or Ir; x is 0.001 to 0.3; and y is 1 to 1.2.
2. The ferrite composition of claim 1 , wherein Me is at least Ba and/or wherein M′ is at least Ti.
3. The ferrite composition of claim 1 , wherein x is 0.005 to 0.1.
4. The ferrite composition of claim 1 , wherein the ferrite composition has a permeability of greater than or equal to 30 at a frequency of 1 to 300 megahertz in the form of a solid ceramic.
5. The ferrite composition of claim 1 , wherein the ferrite composition has a complex permeability at 200 megahertz of 30 to 40; or the SbCo—M-type ferrite can have a complex permeability at 300 megahertz of 20 to 35.
6. The ferrite composition of claim 1 , wherein the ferrite composition has a magnetic loss tangent tan δ μ of less than or equal to 0.3 at a frequency of 1 to 300 megahertz in the form of a solid ceramic.
7. The ferrite composition of claim 1 , wherein the ferrite composition has a resonant frequency of greater than or equal to 250 megahertz in the form of a solid ceramic; or wherein the ferrite composition has a Snoek product of greater than or equal to 8 gigahertz in the form of a solid ceramic.
8. A composite comprising the ferrite composition of claim 1 and a polymer.
9. An article comprising the ferrite composition of claim 1 .
10. An article comprising a ferrite composition comprising a ShCo—M-type ferrite having the formula:
Me 1-x Sb x Co y+x M′ y Fe 12-x-2y O 19
wherein Me is at least one of Sr, Pb, or Ba; M′ is at least one of Ti, Zr, Ru, or In x is 0.001 to 0.3; and y is 0.8 to 1.3, and
wherein the article is an antenna, filter, inductor, circulator, or phase shifter.
11. The article of claim 9 wherein the article is a microwave antenna.
12. The article of claim 9 , wherein the article is an antenna operable at a frequency of 1 to 300 megahertz.
13. A method of making a ferrite composition comprising a SbCo—M-type ferrite having the formula:
Me 1-x Sb x Co y+x M′ y Fe 12-x-2y O 19
wherein Me is at least one of Sr, Pb, or Ba; M′ is at least one of Ti, Zr, Ru, or Ir: x is 0.001 to 0.3; and y is 0.8 to 1.3,
the method comprising:
mixing ferrite precursor compounds comprising Me, Fe, Sb, Co, and M′; and
sintering the ferrite precursor compounds in an oxygen atmosphere to form the SbCo—M-type ferrite.
14. The method of claim 13 , wherein the ferrite precursor compounds comprise MeCO 3 , Sb 2 O 3 , Co 3 O 4 , M′O 2 , and Fe 2 O 3 .
15. The method of claim 14 , wherein the ferrite precursor compounds comprise 5 to 20 weight percent of MeCO 3 , 0.01 to 20 weight percent of Sb 2 O 3 , 1 to 15 weight percent of Co 3 O 4 , 0.1 to 10 weight percent of M′O 2 , and 50 to 80 weight percent of Fe 2 O 3 ; all based on the total weight of the precursor compounds.
16. The method of claim 13 , wherein the sintering occurs at a sintering temperature of 1,000 to 1,300° C. for a sintering time of 1 to 20 hours.
17. The method of claim 13 , further comprising calcining the ferrite precursor compounds in air prior to the sintering.
18. The method of claim 13 , further comprising mixing the ferrite precursor compounds with a binder prior to the sintering.
19. The method of claim 13 , further comprising forming the ferrite precursor compounds prior to the sintering.
Assignments (2)
SECURITY INTEREST
Recorded Mar 24, 2023
From: ROGERS CORPORATION
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 063094/0195 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded May 17, 2022
From: CHEN, YAJIE; LI, QIFAN
To: ROGERS CORPORATION
Reel/Frame 059927/0261 →
Continuity (2)
Provisional Application
62927783
· Oct 30, 2019
References Cited (189)
US 3020426A
· Van Der Burgt
· 1962
[cited by applicant]
US 3036007A
· Buykx et al.
· 1962
[cited by applicant]
US 4569775A
· Kubo et al.
· 1986
[cited by applicant]
US 4664831A
· Hibst et al.
· 1987
[cited by applicant]
US 4957812A
· Aoki et al.
· 1990
[cited by applicant]
US 5110651A
· Massard et al.
· 1992
[cited by applicant]
US 5452167A
· Nago
· 1995
[cited by applicant]
US 5494749A
· Kubo et al.
· 1996
[cited by applicant]
US 5591276A
· Yoshizawa et al.
· 1997
[cited by applicant]
US 5593612A
· Lubitz
· 1997
[cited by applicant]
US 5616414A
· Hopstock
· 1997
[cited by examiner]
US 6071430A
· Lebourgeois et al.
· 2000
[cited by applicant]
US 6358432B1
· Tomono et al.
· 2002
[cited by applicant]
US 6436307B1
· Lebourgeois et al.
· 2002
[cited by applicant]
US 6736990B2
· Aoki et al.
· 2004
[cited by applicant]
US 7348374B2
· Martinazzo
· 2008
[cited by applicant]
US 7482977B2
· Kuroda et al.
· 2009
[cited by applicant]
US 8263224B2
· Tokiwa
· 2012
[cited by applicant]
US 8305281B2
· Suetsuna et al.
· 2012
[cited by applicant]
US 8758721B2
· Hill
· 2014
[cited by applicant]
US 9596755B2
· Sethumadhavan et al.
· 2017
[cited by applicant]
US 20020050309A1
· Marusawa
· 2002
[cited by applicant]
US 20030052298A1
· Wang et al.
· 2003
[cited by applicant]
US 20030091841A1
· Marusawa
· 2003
[cited by applicant]
US 20040054029A1
· Fujiki et al.
· 2004
[cited by applicant]
US 20070231614A1
· Kondo et al.
· 2007
[cited by applicant]
US 20090057606A1
· Tada et al.
· 2009
[cited by applicant]
US 20090101873A1
· Tan et al.
· 2009
[cited by applicant]
US 20090266604A1
· Tokiwa
· 2009
[cited by applicant]
US 20090297432A1
· Hill
· 2009
[cited by applicant]
US 20100060539A1
· Suetsuna et al.
· 2010
[cited by applicant]
US 20100068512A1
· Imaoka et al.
· 2010
[cited by applicant]
US 20110147643A1
· Ryou et al.
· 2011
[cited by applicant]
US 20120049100A1
· Yonetsu et al.
· 2012
[cited by applicant]
US 20120068103A1
· Hill et al.
· 2012
[cited by applicant]
US 20120085963A1
· An et al.
· 2012
[cited by applicant]
US 20120229354A1
· Ishikura et al.
· 2012
[cited by applicant]
US 20130115160A1
· Hill et al.
· 2013
[cited by applicant]
US 20130292602A1
· Hill
· 2013
[cited by applicant]
US 20130342414A1
· Hong et al.
· 2013
[cited by applicant]
US 20140264145A1
· Ray et al.
· 2014
[cited by applicant]
US 20140291571A1
· Riden
· 2014
[cited by applicant]
US 20140346387A1
· Hill et al.
· 2014
[cited by applicant]
US 20150310971A1
· Kmetz et al.
· 2015
[cited by applicant]
US 20160086700A1
· Suetsuna et al.
· 2016
[cited by applicant]
US 20160086728A1
· Suetsuna et al.
· 2016
[cited by applicant]
US 20160099498A1
· Pance et al.
· 2016
[cited by applicant]
US 20160113113A1
· Sethumadhavan et al.
· 2016
[cited by applicant]
US 20160118171A1
· Hill
· 2016
[cited by applicant]
US 20160276072A1
· Sethumadhavan et al.
· 2016
[cited by applicant]
US 20170098885A1
· Hill et al.
· 2017
[cited by applicant]
US 20170213628A1
· Chen et al.
· 2017
[cited by applicant]
US 20180016157A1
· Chen et al.
· 2018
[cited by applicant]
US 20190013128A1
· Chen et al.
· 2019
[cited by applicant]
US 20190040226A1
· Aga et al.
· 2019
[cited by applicant]
US 20190081377A1
· Hill et al.
· 2019
[cited by applicant]
US 20190264005A1
· Horn et al.
· 2019
[cited by applicant]
US 20190300379A1
· Kojima et al.
· 2019
[cited by applicant]
US 20190318858A1
· Chen et al.
· 2019
[cited by applicant]
US 20210032121A1
· Li et al.
· 2021
[cited by applicant]
US 20210043346A1
· Li et al.
· 2021
[cited by applicant]
US 20210065943A1
· Zhang et al.
· 2021
[cited by applicant]
US 20210179442A1
· Chen et al.
· 2021
[cited by applicant]
US 20210225566A1
· Zhang et al.
· 2021
[cited by applicant]
US 20210246046A1
· Chen et al.
· 2021
[cited by applicant]
US 20210261433A1
· Chen et al.
· 2021
[cited by applicant]
US 20230352221A1
· Chen et al.
· 2023
[cited by applicant]
US 20230352222A1
· Chen et al.
· 2023
[cited by applicant]
US 20230399237A1
· Chen et al.
· 2023
[cited by applicant]
US 20240158302A1
· Chen et al.
· 2024
[cited by applicant]
US 20240203624A1
· Chen et al.
· 2024
[cited by applicant]
CN 101723654A
· 2010
[cited by applicant]
CN 102486655A
· 2012
[cited by applicant]
CN 103304186A
· 2013
[cited by applicant]
CN 104193224A
· 2014
[cited by applicant]
CN 104379537A
· 2015
[cited by applicant]
DE 3907220
· 1990
[cited by applicant]
EP 0620571A2
· 1994
[cited by applicant]
EP 0884740A1
· 1998
[cited by applicant]
EP 0905718A1
· 1999
[cited by applicant]
EP 1541641A1
· 2005
[cited by applicant]
EP 1652829A2
· 2006
[cited by applicant]
EP 2028663A1
· 2009
[cited by applicant]
EP 2214180A1
· 2010
[cited by applicant]
EP 2784044A1
· 2014
[cited by applicant]
EP 3012843A1
· 2016
[cited by applicant]
GB 1105788A
· 1968
[cited by applicant]
JP S621149A
· 1987
[cited by applicant]
JP S6245005A
· 1987
[cited by applicant]
JP 62216922A
· 1987
[cited by applicant]
JP S62216922A
· 1987
[cited by applicant]
JP S6489504A
· 1989
[cited by applicant]
JP H01200605A
· 1989
[cited by applicant]
JP H05101930A
· 1993
[cited by applicant]
JP H0615411B2
· 1994
[cited by applicant]
JP H06338410A
· 1994
[cited by applicant]
JP H09167703
· 1997
[cited by applicant]
JP H09213513A
· 1997
[cited by applicant]
JP H09232123A
· 1997
[cited by applicant]
JP 2000235916A
· 2000
[cited by applicant]
JP 2000277973
· 2000
[cited by applicant]
JP 2001085210A
· 2001
[cited by applicant]
JP 2009105365A
· 2009
[cited by applicant]
JP 2009155545A
· 2009
[cited by applicant]
JP 2017037999A
· 2017
[cited by applicant]
JP 6534418B2
· 2019
[cited by applicant]
TW 201628263
· 2016
[cited by applicant]
WO 9600454A1
· 1996
[cited by applicant]
WO 2011081399A2
· 2011
[cited by applicant]
WO 2012103020A2
· 2012
[cited by applicant]
WO 2016064459
· 2016
[cited by applicant]
WO 2016123598A1
· 2016
[cited by applicant]
WO 2017068444
· 2017
[cited by applicant]
WO 2018043943A1
· 2018
[cited by applicant]
WO 2020162295A1
· 2020
[cited by applicant]
WO 2021061599A1
· 2021
[cited by applicant]
WO 2021162886A1
· 2021
[cited by applicant]
International Search Report; International Application No. PCT/US2020/057827; International Filing Date: Oct. 29, 2020; Date of Mailing: Feb. 19, 2021; 6 pages.
[cited by applicant]
Pullar, “Hexagonal Ferrites: A Review of the synthesis, properties and application of hexaferrite ceramics,” Mar. 2012, Progress in Material Science, vol. 57, No. 7, pp. 1191-1334.
[cited by applicant]
Written Opinion; International Application No. PCT/US2020/057827; International Filing Date: Oct. 29, 2020; Date of Mailing: Feb. 19, 2021; 10 pages.
[cited by applicant]
Allia et al.; “Fe304 nanoparticles and nanocomposites and potential application in biomedicine and in communication technologies: Nanoparticle aggregation, interaction, and effective magnetic anisotropy”; J. of Applied …
[cited by applicant]
Aoyama et al.; “Preparation and Characterization of Z-type Hexaferrites, Ba3(1-x)Sr3xCo2Fe24O41 with x=0-0.5, via a two-step calcination with an intermediate wet milling”; J.Electroceram; 17; pp. 61-64 (2006).
[cited by applicant]
Bid et al.; “Microstructure Characterization of Mechanosynthesized Nanocrystalling NiFe2O4 by Rietveld's Analysis”; Physica E 39; pp. 175-184; (2007).
[cited by applicant]
Bierlich et al., “Low-temperature sintering and magnetic properties of Sc- and In-substituted M-type hexagonal barium ferrites for microwave applications”, Abstract, Feb. 2017 Materials Research Bulletin 86:19-23 ;11 pa…
[cited by applicant]
Boix, Rafael R., et al., “Characteristics of Aperture Coupled Microstrip Antennas on Magnetized Ferrite Substrates”, IEEE Transactions on Antennas and Propagation, vol. 53, No. 6, (Jun. 1, 2005), pp. 1957-1966.
[cited by applicant]
Brando et al., “Microwave Electromagnetic Characteristics of New Substituted M-Hexaferrites BaFe12-2xAxMexO19 (A = Ru, Ir ; Me = Co, Zn)”, Journal De Physique IV France, Mar. 1997.
[cited by applicant]
Brockman et al., Nickel-Zinc Ferrites: I, Effect of Compostion on the Magnetic Properties of a Nickel-Zinc-(Cobalt) Ferrite, Sep. 1970, Journal of the American Ceramic Society, vol. 53, No. 9, pp. 518-520.
[cited by applicant]
Cao et al. “Hydrogen-Induced Lateral Growth of Nickel Coating on Ba3Co2Fe24O4(Co2Z-Based Hexaferrite during the Electroplating of Multilayer Chip Inductors,” Journal of The Electrochemical Society, 2002, vol. 149 Issue …
[cited by applicant]
Chicinas, I.; “Soft Magnetic Nanocrystalline Powders Produced by Mechanical Alloying Routes”; Journal of Optoelectronics and Advanced Materials; 8(2); pp. 439-448; (2006).
[cited by applicant]
Cruz-Montoya et al., “Synthesis and characterization of polymer nanocomposites containing magnetic nanoparticles”; Journal of Applied Physics 107; 09B506 (2010); 4 pgs.
[cited by applicant]
Dedi et al., “Magnetic properties of cobalt ferrite synthesized by mechanical alloying”, AIP Conference Proceedings, 1964; 020003 2018; 5 pages.
[cited by applicant]
Deng, et al; Effect of Bi and Mo Doping on Magnetic and Sintered Characteristics of MgCuZn Ferrite, Journal of Inorganic Materials, 2008, pp. 670-672, vol. 23 No. 4.
[cited by applicant]
EP Supplemental Search Report; EP Application No. 15853114; Mailed Nov. 21, 2017; 8 pages.
[cited by applicant]
Guo et al. Abstract of “Magnetic Properties of Ir4+ Doped Co2 Z Type Hexagonal Ferrites,” Journal of Rare Earths, pp. 220-222, vol. 25, Supplement 2, Jun. 2007; 7 pgs.
[cited by applicant]
Haijun et al., “The preparation and microwave properties of Ba3ZnzCo2-zFe24O41 ferrite by citrate sol-gel process”, Materials Science and Engineering, B84, 2001, pp. 252-257.
[cited by applicant]
Han et al.; “Microwave-absorption properties of Fe(Mn)/ferrite nanocapsules”; J. Phys. D: Appl. Phys. 42; (2009) 5 pages.
[cited by applicant]
Hansen et al., “Antennas with Magneto-Dielectrics”, Microwave and Optical Technology Letters, vol. 26, No. 2, Jul. 2000, pp. 75-78.
[cited by applicant]
Huang et al.; “Magnetic epoxy nanocomposites with superparamegnetic MnFe204 nanoparticles”; AIP Advance 5; 097183 (2015); 16 pgs.
[cited by applicant]
Ismail et al.; “Magnetic Properties of Mechanically Alloyed Cobalt-Zinc Ferrite Nanoparticles”; J. Supercond Nov Magn; 27; pp. 1293-1298; (2014).
[cited by applicant]
Kim et al., “Effects of in3+ site occupancy on the magnetic properties of M-type strontium hexaferrites”, AIB Advances 10, 015040 (2020); https://doi.org/10.1063/1.5130073; 5 pages.
[cited by applicant]
Koch, C. C.; “Materials Synthesis by Mechanical Alloying”; Annu. Rev. MaterSci. 19; pp. 121-143; (1989).
[cited by applicant]
Koch, C.C.; “Intermetallic Matrix Composites Prepared by Mechanical Alloying—a Review”; Materials Science and Engineering; A244; pp. 39-48; (1998).
[cited by applicant]
Kong et al., “Ni-Zn Ferrites Composites With Almost Equal Values of Permeability and Permittivity for Low-Frequency Antenna Design,” IEEE Transactions On Magnetics, Jan. 2007, pp. 6-9, vol. 43, No. 1.
[cited by applicant]
Kristiantoro et al. , “Magnetic properties of cobalt ferrite synthesized by mechanical alloying”, from AIP Conf 1964, 020003 (2018) Published Online May 15, 2018; 5 pages.
[cited by applicant]
Lee et al. “Figure of merit of X-type hexaferrite (Ba2Co2Fe28O46) for mobile antenna applications”, Microwave and Optical Technology Letters, vol. 60, Issue 3, Feb. 5, 2018, https://doi.org/10.1002/mop.31053.
[cited by applicant]
Lee et al., “Low Loss Co2Z (Ba3Co2Fe24O41)—Glass Composite for Gigahertz Antenna Application,” Journal of Applies Physics, 2011, vol. 109, 07E530-2.
[cited by applicant]
Lee, Jaejin et al., “Role of Small Permeability in Gigahertz Ferrite Antenna Performance”, IEEE Magnetics Letters, vol. 4, 201633; 1 page.
[cited by applicant]
Li et al. “High-frequency magnetic properties of W-type barium-ferrite BaZn2-xCoxFe16O27 composites”, Journal of Applied Physics 94, 5918 (2003): https://doi.org/10.1063/1.1618945.
[cited by applicant]
Li et al., “High-Frequency Properties and Attenuation Characteristics of WBa Hexaferrite Composites with Doping of Varius Oxides,” Transactions of Magnetics, Feb. 2009, pp. 670-677, vol. 45 No. 2.
[cited by applicant]
Li et al.; “Microstructure effects on shock-induced surface jetting”; Journal of Applied Physics 115: 073504 (2014); pp. 11.
[cited by applicant]
Li et al; “Static and Dynamic Magnetic Properties of Co2Z Barium Ferrite Nanoparticle Composites”; Journal of Materials Science, 40, pp. 719-723 (2005).
[cited by applicant]
Liu et al.; “Corrigendum: Electromagnetic-wave-absorption properties of wire-like structures self-assembled by FeCo nanocapsules”; J. Phys. D: Appl. Phys. 45; (2012); 7 pages.
[cited by applicant]
Martin et al.; “Flexible Magnetic Composites”; Passive RF Component Technoloby, Materials Techniques and Applications; Chapter 8; 2012; pp. 156-185.
[cited by applicant]
Mattei et al., “Magnetic and dielectric properties in the UHF frequency band of half-dense Ni—Zn—Co ferrites ceramics with Fe-excess and Fe-deficiency”, Journal of Magnetism and Magnetic Materials, Sep. 2017, 8 pages.
[cited by applicant]
Morch et al. “Structure and Magnetic properties of W-type hexaferrites,” 2019, IUCRJ, pp. 492-499, vol. 6.
[cited by applicant]
Mou, Fangzhi et al., “Oriented Contraction: A Facile Nonequilibrium Heat-Treatment Approach for Fabrication of Maghemite Fiber-in-Tube and Tube-in-Tube Nanostructures”, Langmuir 2010, 26 (19), pp. 15580-15585.
[cited by applicant]
Mu et al., “Improvement of high-frequency characteristics of Z-type hexaferrite by dysprosium doping”, Journal of Applied Physics, 109, 123925, 2011, 6 pages.
[cited by applicant]
Narayanasamy et al. “Influence of mechanical milling and thermal annealing on electrical and magnetic properties of nanostructured Ni—Zn and cobalt ferrites”, Bulletin of Materials Science, vol. 31, No. 3 Jun. 1, 2008; …
[cited by applicant]
Ohnuma et al.,“Soft Magnetic Multilayers for Micromagnetic Devices, ”Journal of Magnetism and Magnetic Materials, 1993, pp. 556-562, vol. 126.
[cited by applicant]
Pal et al.; “Synthesis and magnetic properties of gold coated iron oxide nanoparticles”; Journal of Applied Physics 105; 07B504 (2009); 4 pgs.
[cited by applicant]
Park et al. “Design of Wide bandwidth microwave absorber with Ferrite composites of broad magnetic loss specturm,” Advanced Materials Engineering, 2015.
[cited by applicant]
Pasko et al. “Magnetic and Structural characterization of nanosized BaCoxZn2-xFe16O27 hexaferrite in the vicinity of spin reorientation transition,” 2011, Journal of Physics: Conference Series 303.
[cited by applicant]
Pullar et al; “Hexagonal Ferrites: A Review of the Synthesis, Properties and Applications of Hexaferrite Ceramica”; Progress in Materials Science; 57; pp. 1191-1134; (2012).
[cited by applicant]
Sahoo et al. Enhanced Magnetoelectricity in Bismuth Substituted SrFe12O19 Hexaferrite, Aug. 2019, Journal of Applied Physics, vol. 126, No. 7.
[cited by applicant]
Sahu et al.; “Influence of excess Fe accumulation over the surface of FePt nanoparticles: Structural and magnetic properties”; Journal of Applied Physics 113; 134303 (2013); 1 pg Abstract only.
[cited by applicant]
Sepelak et al.; “Nanocrystalline Nickel Ferrite, NiFe2O4: Mechanosynthesis, Nonequilibrium Cation Distribution, Canted Spin Arrangement, and Magnetic Behavior”; J.Phys.Chem. C; 111; pp. 5026-5033; (2007).
[cited by applicant]
Sepelak et al.; “Structural and Magnetic Properties of Nanosize Mechanosynthesized Nickel Ferrite”; Jounral of Magnetism and Magnetic Materials; 272-276; pp. 1616-1618; (2004).
[cited by applicant]
Sharma et al.; “Ultra Low Loss Soft Magnetic Nanoparticles for Applications Up to S-band,” Applied Physics Letters, vol. 103, 112402, Sep. 2013.
[cited by applicant]
Singh et al. “Static Magnetic Properties of Co and Ru substituted Ba-Sr ferrite,” 2008, Materials Research Bulletin, pp. 176-184, vol. 43.
[cited by applicant]
Su et el., “Low Loss Factor Co2Z Ferrite Composites with Equivalent Permittivity and Permeability for Ultra-high Frequency Applications,” Applied Physics Letters, Aug. 2014, vol. 105 No. 062402.
[cited by applicant]
Thakur et al., “Low-loss Spinel Nanoferrite with Matching Permeability and Permittivity in the Ultrahigh Frequency Range,” Journal of Applied Physics · Jul. 2010, vol. 108.
[cited by applicant]
Thanh Ba Do; “High Temperature Composite Materials and Magnetodielectric Composites for Microwave Application”; Dissertation; University of Michigan; 2010; 223 pages.
[cited by applicant]
Waje et al.; “Sintering Temperature dependence of Room Temperature Magnetic and Dielectric Properties of Co0.5Zn0.5F32O4 Prepared using Mechanically Alloyed Nanoparticles”; Journal of magnetism and Magnetic Materials; 3…
[cited by applicant]
Wu et al.; “Studies of high-frequency magnetic permeability of rod-shaped CrO2 nanoparticles”; Phys. Stat. Sol. (a) 204; No. 3; pp. 755-762; 2007.
[cited by applicant]
Xu et al., “Structural, dielectric and magnetic properties of Nd-doped Co2Z-type hexaferrites”, Jounal of Alloys and Compounds, 509, 2011, pp. 4290-4294.
[cited by applicant]
Yang, Guo-Min, et al., “Miniaturized Patch Antennas with Ferrite/Dielectric/Ferrite Magnetodielectric Sandwich Substrate”, Piers Online, vol. 7, No. 7, (Jan. 1, 2011), pp. 609-612.
[cited by applicant]
Yang, Guo-Min, et al., “Novel Compact and Low-Loss Phase Shifters With Magnetodielectric Disturber”, IEEE Microwave and Wireless Components Letters, vol. 21, No. 5, (May 1, 2011); pp. 240-242.
[cited by applicant]
Zaher et al., “Osmotically driven drug delivery through remote-controlled magnetic nanocomposite membranes”; Biomicrofluidics 9; 054113 (2015); 17 pgs.
[cited by applicant]
Zhen et al.; “Microwave absorption properties of FeNi3 submicrometre spheres and SIO2@FeNi3 core-shell structures”; J. Phys. D: Appl. Phys. 43; (2010); 7 pages.
[cited by applicant]
Carvalheiras et al. “Synthesis of red mud derived M-type barium hexaferrites with tuneable coercivity”, Ceramics International, vol. 46, No. 5, Nov. 7, 2019, pp. 5757-5764, XP086001988.
[cited by applicant]
Li, Qifan. Development of Magnetodielectric Materials with Low Loss and High Snoek's Product for Microwave Applications, Ph.D. Dissertation to The Department of Electrical and Computer Engineering, Northeastern Univ., B…
[cited by applicant]
You, Jae-Hyoung, et al. Magnetic Properties of Zn-substituted Y-type hexaferrites, Ba2ZnxFe2-xFe12O22, Journal of Magnetism and Magnetic Materials, 471 (2019) 255-261.
[cited by applicant]
Faouri et al., “High quality factor cold sintered Li2MoO4-BaFe12O19 composites for microwave applications,” Mar. 2019, Acta Materialia, vol. 166, pp. 202-207.
[cited by applicant]
Li, Qifan, et al. “Emerging magnetodielectric materials for 5G communications: 18H hexaferrites,” Acta Materialia 231 (2022) 117854 Elsevier Ltd., 10 pages.
[cited by applicant]