Title :
Double Coil Permeameter for the Characterization of Magnetic Materials
Author :
Hettstedt, Falk ; Schürmann, Ulrich ; Knöchel, Reinhard ; Quandt, Eckhard
Author_Institution :
Inst. of Electr. & Inf. Eng., Christian-Albrechts-Univ., Kiel
Abstract :
This paper presents a permeameter for the measurement of the complex permeability of magnetic thin films up to several GHz. The permeameter consists of a driving coil and a pickup coil. The magnetic properties of the magnetic thin film sample inserted into the pickup coil cause the change of the coupling between the driving and pickup coil. Then, the complex permeability of the sample can be obtained from the coupling variation. The geometry is optimized with respect to sensitivity and self resonance by field simulations using HFSS. Small residual errors at low frequencies are removed through vibrating sample magnetometer measurements.
Keywords :
coils; magnetic permeability; magnetic permeability measurement; magnetic thin films; magnetometers; complex permeability; double coil permeameter; driving coil; field simulations; magnetic materials; magnetic thin films; pickup coil; self resonance; vibrating sample magnetometer measurements; Coils; Couplings; Frequency; Geometry; Magnetic films; Magnetic materials; Magnetic properties; Magnetic resonance; Permeability measurement; Solid modeling; Material characterization; Permeameter;
Conference_Titel :
Microwave Conference, 2009 German
Conference_Location :
Munich
Print_ISBN :
978-3-9812668-0-1
Electronic_ISBN :
978-3-8007-3150-3
DOI :
10.1109/GEMIC.2009.4815858