Single-Point FMR Linewidth Measurement by TE10 Rectangular Transmission Cavity Perturbation

A method that allows the determination of magnetic permeability in magnetic bodies, as well as the ferromagnetic resonance (FMR) linewidth, by measuring only the quality factor and the resonant frequency of the perturbed microwave cavity at FMR is presented. The method is based on a set of equations derived for various types of magnetic media, including ferrites, single crystals, and polycrystalline materials. The evaluation of resonators containing magnetic medium is considered, and a detailed description of the spectrometer and the experimental procedure are presented. Independently measured yttrium iron garnet samples were used to validate the method.

[1]  V. Harris,et al.  Broadband ferromagnetic resonance linewidth measurement by a microstripline transmission resonator , 2016 .

[2]  A. Babakhani,et al.  A Single-Chip Electron Paramagnetic Resonance Transceiver in 0.13-$\mu$ m SiGe BiCMOS , 2015, IEEE Transactions on Microwave Theory and Techniques.

[3]  V. Harris,et al.  The field domain FMR linewidth measurement by a microstrip line transmission resonator perturbation technique , 2015, 2015 IEEE Magnetics Conference (INTERMAG).

[4]  P. Li,et al.  Nanometer-Thick Yttrium Iron Garnet Films With Extremely Low Damping , 2014, IEEE Magnetics Letters.

[5]  V. Harris,et al.  Low loss factor Co2Z ferrite composites with equivalent permittivity and permeability for ultra-high frequency applications , 2014 .

[6]  Tao Liu,et al.  Ferromagnetic resonance of sputtered yttrium iron garnet nanometer films , 2014 .

[7]  V. Harris,et al.  Crystallographically textured self-biased W-type hexaferrites for X-band microwave applications , 2013 .

[8]  G. Melkov,et al.  Magnetization Oscillations and Waves , 1996 .

[9]  M. Sparks.  Ferromagnetic Resonance in Thin Films. I. Theory of Normal-Mode Frequencies , 1970 .

[10]  M. Sparks.  Ferromagnetic Resonance in Thin Films. III. Theory of Mode Intensities , 1970 .

[11]  M. Sparks.  Ferromagnetic Resonance in Thin Films. II. Theory of Linewidths , 1970 .

[12]  J. Nemarich.  The Measurement of Narrow Magnetic-Resonance Linewidths , 1965 .

[13]  E. A. Turov,et al.  Physical Properties of Magnetically Ordered Crystals , 1965 .

[14]  A. Tybulewicz,et al.  Ferrites at microwave frequencies , 1963 .

[15]  E. Schlömann,et al.  Ferromagnetic Resonance in Polycrystalline Ferrites with Hexagonal Crystal Structure , 1959 .

[16]  E. Spencer,et al.  Ferromagnetic Resonance Line Width in Yttrium Iron Garnet Single Crystals , 1958 .

[17]  E. Schlömann,et al.  Ferromagnetic Resonance in Polycrystalline Nickel Ferrite Aluminate , 1958 .

[18]  F. Merritt,et al.  Ferromagnetic Resonance in Various Ferrites , 1951 .

[19]  J. V. Vleck.  Concerning the Theory of Ferromagnetic Resonance Absorption , 1950 .

[20]  D. Polder,et al.  On the theory of ferromagnetic resonance , 1949 .

[21]  D. Polder,et al.  VIII. On the theory of ferromagnetic resonance , 1949 .

[22]  D. Polder.  On the Quantum Theory of Ferromagnetic Resonance , 1948 .

[23]  C. Kittel.  On the Theory of Ferromagnetic Resonance Absorption , 1948 .

[24]  L. Néel,et al.  Propriétés magnétiques des ferrites ; ferrimagnétisme et antiferromagnétisme , 1948 .

[25]  Lev Davidovich Landau,et al.  ON THE THEORY OF THE DISPERSION OF MAGNETIC PERMEABILITY IN FERROMAGNETIC BODIES , 1935 .

[26]  Jakob Dorfmann.  Einige Bemerkungen zur Kenntnis des Mechanismus magnetischer Erscheinungen , 1923 .