Modelling of electrical properties of mn-zn ferrites taking into account the frequency of the occurrence of the dimensional resonance

Teodora Plamenova Todorova 1 , Vencislav Cekov Valchev 1 ,  and Alex Van den Bossche 2
  • 1 Department of Electronics and Microelectronics, Technical University of Varna, 1 Studentska Str.,, Varna, Bulgaria
  • 2 Electrical Energy Laboratory, Department of Electrical Energy, Metals, Mechanical Constructions and Systems, Ghent University, Technologiepark 913, Zwijnaarde,, Ghent, Belgium

Abstract

Besides their magnetic properties, Mn-Zn ferrites are also characterized by appreciable electrical properties. This electro- magnetic nature of Mn-Zn ferrites material properties causes a dimensional resonance to occur in samples. The latter hinders measurements of the frequency dependences of intrinsic permittivity and electrical conductivity. In the paper, we present a sign in measurement results that shows the frequency range in which dimensional resonance has already occurred. Above this range, properties extracted from measurements are not intrinsic any longer. We refer to the sign to determine the last point of the measurement data set that is used as an input for an equivalent circuit modelling of the electrical properties. This “last point” criterion helps to exclude the possibility of modelling apparent properties instead of intrinsic ones. The results obtained show that the frequency dependent electrical properties may be well modeled even if the upper limit of the input frequency range to the curve fitting is below the frequency range in which the dimensional resonance occurs.

If the inline PDF is not rendering correctly, you can download the PDF file here.

  • [1] E. C. Snelling and A. D. Giles, Ferrites for Inductors and Trans- formers, Letchworth, Research Studies Press, 1983.

  • [2] H. Saotome and Y. Sakaki, ”Iron Loss Analysis of Mn-Zn Fer- rite Cores”, IEEE Transactions on Magnetics, vol. 33, no.1, Jan 1997, pp. 728-734.

  • [3] V. T. Zaspalis, V. Tsakaloudi and G. Kogias, ”MnZn-Ferrites: Targeted Material Design for New Emerging Application Prod- ucts”, EPJ Web of Conferences, vol. 75, 2014, p. 04004.

  • [4] J. Zhu, C. F. Foo and P. Hing, ”Dielectric Loss Analysis of Toroid MnZn Ferrite Core”, Electronics Letters, vol. 35, no. 20, Sep 1999, pp. 1746-1748.

  • [5] F. Fiorillo, C. Beatrice, O. Bottauscio and E. Carmi, ”Eddy-cur- rent Losses in Mn-Zn Ferrites”, IEEE Transactions on Magnet- ics, vol. 50, no. 1, Jan 2014.

  • [6] S. Coulibaly, D. Malec, V. Bley, D. Mary and B. Schlegel, ”New Use of Mn-Zn Ferrite Material in Electronics Integrated LC Filters”, Engineering, vol. 9, no. 12, 2017, pp. 993-1007.

  • [7] Keysight Technologies, ”Basics of Measuring the Dielectric Properties of Materials - Application Note”, 8 March 2017 [Online]. http://literature.cdn.keysight.com/litweb/pdf/5989-2589EN.pdf.

  • [8] Ferroxcube, ”Soft Ferrites and Accessories, Data Handbook”, 2013 [Online]. http://www.ferroxcube.com [Accessed January 2016].

  • [9] F. G. Brockman, P. H. Dowling and W. G. Steneck, ”Dimen- sional Effects Resulting from a High Dielectric Constant Found in a Ferromagnietic Ferrite”, Physical Review, vol. 77, no. 1, Jan 1950, pp. 85-93.

  • [10] D. Zhang and C. F. Foo, ”Effect of High Permeability on the Ac- curate Determination of Permittivity for Mn-Zn Ferrite Cores”, IEEE Transactions on Magnetics, vol. 40, no. 6, Nov 2004, pp. 3518-3526.

  • [11] R. Huang and D. Zhang, ”Experimentally Verified Mn-Zn Fer- rites’ Intrinsic Complex Permittivity and Permeability Tracing Technique using Two Ferrite Capacitors”, IEEE Transactions on Magnetics, vol. 43, no. 3, Mar 2007, pp. 974-981,.

  • [12] R. Huang and D. Zhang, ”Theoretical, Experimental Compari- son of Different Lumped Circuit Methods for Determination of Mn-Zn Ferrites’ Intrinsic Complex Permeability and Permittiv- ity”, IEEE Transactions on Magnetics, vol. 44, no. 6, June 2008, pp. 846-849.

  • [13] G. R. Skutt, F. C. Lee and J. G. Breslin, ”Measurement Issues in the Characterization of Ferrite Magnetic Material”, VPEC Seminar Series, Blacksburg, Virginia, USA, 1996.

  • [14] J. P. Keradec, P. Fouassier, B. Cogitore and F. Blache, ”Ac- counting for Resistivity and Permittivity High Frequency Per- meability Measurements. Application to MnZn ferrites”, IMTC 2003 - Instrumentation, Measurement Technology Conference, Vail, 2003.

  • [15] X. EPCOS, ”Ferrites and Accessories”, PQ 50/50 Core, Acces- sories Datasheet, May 2017.

  • [16] X. EPCOS, ”Ferrites and accessories”, EELP 18, EILP 18 Core set datasheet, Mar 2016.

  • [17] X. EPCOS, ”Ferrites and accessories”, EELP 32, EILP 32 Core set datasheet, Apr 2016.

  • [18] S. Bondarenko, G. A. Ragoisha, “Progress Chemometrics Re- search”, A. L. Pomerantsev, ed., Nova Science Publishers, New York, 2005, p. 89-102 (the program is available online at http://www.abc.chemistry.bsu.by/vi/analyser/).

  • [19] C. G. Koops, ”On the Dispersion of Resistivity and Dielectric Constant of Some Semiconductors at Audiofrequencies”, Physi- cal Review, vol. 83, no. 1, July 1951, pp. 121-124.

  • [20] M. E. Orazem, I. Frateur, B. Tribollet, V. Vivier, S. Marcelin, N. Pebere, A. L. Bunge, E. A. White, D. P. Riemer and M. Musiani, ”Dielectric Properties of Materials Showing Con- stant-Phase-Element (CPE) Impedance Response”, Journal of the Electrochemical Society, vol. 160, no. 6, Mar 2013, pp. C215-C225.0

  • [21]Research Solutions and Resources, LLC, ”Home: Re- sources: Sitemap: The ZARC Circuit Element”, 16 Aug 2 [On- line] http://www.consultrsr.net/ (Accessed 25 November 2017).

  • [22] T. P. Todorova, A. Van-den-Bossche and V. C. Valchev, ”A Procedure for the Extraction of Intrinsic ac Conductivity and Dielectric Constant of N87 Mn-Zn Ferrite Samples based on Impedance Measurements and Equivalent Electrical Circuit sModelling”, IEEE Transactions on Power Electronics, (in press) 2018, (doi:

    • Crossref
    • Export Citation
OPEN ACCESS

Journal + Issues

Search