Frequency characterization of thin soft magnetic material layers used in spiral inductors,

Abstract : The paperdetailsthecharacterizationofthinmagneticmaterialslayers,particularlysoftmaterials, with respecttotheirbehaviourinfrequency(from10MHzto1GHz).Theproposedmethodissuitable for anysoftbutinsulatingmagneticmaterial;YttriumIronGarnet(YIG)isusedasanexample.The principleisbasedonacomparisonbetweensimulationsfordifferentvaluesofthepermeabilityand measurementvaluesversusfrequencyofplanarinductorstructures;anexperimentalvalidationis proposedaswell.ThinmagneticmaterialisfirstdepositedonanaluminasubstrateusingRFsputtering technique;aplanarspiralwindingofcopperisthendepositedonthemagneticmaterialbythesame technique.Theeffectivepermeabilityversusfrequencyisobtainedbycomparingtwosamplesofspiral windingswithandwithoutmagneticmaterial.Networkanalysermeasurementsonsamplesofvarious geometricaldimensionsandofdifferentthicknessesarenecessarytodeterminetheeffectivemagnetic permeability;wehaveobtainedarelativeeffectivepermeabilityofabout30forseventurnsspiral inductorofa17 mm YIGfilm.
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https://hal-ujm.archives-ouvertes.fr/ujm-00789992
Contributor : Jean-Pierre Chatelon <>
Submitted on : Tuesday, February 19, 2013 - 11:04:30 AM
Last modification on : Wednesday, December 12, 2018 - 3:27:48 PM

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Adoum Kriga, Désiré Allassem, Malloum Soultan, Jean-Pierre Chatelon, A. Siblini, et al.. Frequency characterization of thin soft magnetic material layers used in spiral inductors,. Journal of Magnetism and Magnetic Materials, Elsevier, 2012, 324 (14), pp.2227-2232. ⟨10.1016/j.jmmm.2012.02.043⟩. ⟨ujm-00789992⟩

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