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Journal Articles Journal of Magnetism and Magnetic Materials Year : 2012

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

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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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Dates and versions

ujm-00789992 , version 1 (19-02-2013)

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Cite

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, 2012, 324 (14), pp.2227-2232. ⟨10.1016/j.jmmm.2012.02.043⟩. ⟨ujm-00789992⟩
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