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BST doping on the M / Z-type hexagonal ferrite complex permeability (1MHz ~ 1GHz) of

heaveragediametersofnickelnanoparticlescanbetunedfrom72nmto25nm. Thenanoparticlesob-tainedarecharacterizedtobepurenickelcrystallinewithfccstructurebyXRDandSAED. Poly (vinylpyrrolidone) wasconsideredtobeimportantforpreventingthenickelnanoparticlesfromagglomeration. ThechemicalinteractionbetweenthePVPandnickelnanoparticleswasfoundbyFTIR. Keywords: magneticnanoparticles; Nickel; polyolprocess; PVP (on the next 363 pages). -. One. -. -. . ● -. _ ¨ -. . ● -. _ ● ----. -. -. _ ● A - ● -. . . -. -. . - ● -. . . -. -. . ---EffectofBSTadditiveonthecomplexpermeabilityofM/Z--typehexaferriteintherangeof1MHz ~ 1GHzCHENGeng,[link widoczny dla zalogowanych], XIEJian-liang,[link widoczny dla zalogowanych], HUANGPeng (SchoolofMicroelectronicsandSolid-stateElectronics,[link widoczny dla zalogowanych], UniversityofElectronicScienceandTechnologyofChina,[link widoczny dla zalogowanych], Chengdu610054, China) Abstract: M_typehexaferrite (BaFil.4Co 【4Fe92ol9) andZ-typehexaferrite (Ba (Co0.4Zn0.6) 2F023.4o41) withBST (Bao.5Sr0.5Ti03) additivewaspreparedbystandardceramictechnique. WehaveinvestigatedtheeffectsofBSTadditiveonthecomplexpermeabilityintherangeof1MHz ~ 1GHz. theBSTadditiveintheZ-typehexaferriteimprovecomplexpermeabilityandferromagneticresonancepeaksshifttolowfrequencyregion; theBSTaddi-tiveintheM-typehexaferritereducecomplexpermeabilityandprovidedbroadbandferromagneticresonancepeaksshifttolowfrequencyregion. SowediscusswhyeffectsofdopingBST (Ba0.5Sr0.sTiO3) inM-typeHexa-ferrite (BaFil.4Co1.4Fe9.2ol.) AndinZ-lypehexaferrite (Ba3 (Co0.4Zn0.6) 2Fz3.4041) wasdifferentbytestingmi-crostructureandmagneticparameter. Keywords: Z-typehexaferrite; M. typehexaferrite: magnetocrystallineanisotropicconstant; complexpermeability

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