A new strip line broad-band measurement evaluation for determining the complex permeability of thin ferromagnetic films

Bekker, V. Ya.; Seemann, K.; Leiste, H.

doi:10.1016/j.jmmm.2003.08.033

Cited by 167 publications

(70 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The frequencydependent complex permeability of the films was measured in the frequency range f ¼ 0.03..5 GHz by using a strip-line permeameter connected to an Agilent 8719D vector network analyzer. [14] Results Thin Film Growth, Constitution, and Microstructure…”

Section: Characterization Of the Macroscopic Mechanical And Magnetic mentioning

confidence: 99%

Multifunctional FeCo/TiN Multilayer Thin Films with Combined Magnetic and Protective Properties

Klever¹,

Stüber²,

Leiste³

et al. 2009

Adv Eng Mater

View full text Add to dashboard Cite

Coatings with thicknesses ranging from a few nanometer up to several micrometer produced by physical vapor deposition (PVD) processes have been established in engineering technologies since the early 1980s. In particular, magnetron sputtered wear resistance coatings are industrially established and capable to enhance tool lifetimes significantly. However, in cases where optical inspection of a coating in use is not possible, an intrinsic sensor function of the film would be beneficial. Therefore, the development of wear resistant coatings with an integrated sensor functionality based on the insertion of a magnetoelastic ferromagnetic phase is suggested. In combination with appropriate read-out electronics such a film system would be ready for online monitoring of the coatings' actual state (e.g., strain, temperature, volume loss). This paper focuses on the development of wear resistance coatings which simultaneously supply beneficial mechanical properties as well as ferromagnetic properties optimized for online non-contact read-out applications. Multilayer coatings obtained through alternate stacking of magnetron sputtered TiN and FeCo layers with a nominal total thickness of 1000 nm were produced as a model system meeting the above conditions. The bilayer period was varied down to 2.6 nm while the individual layer thickness ratio t TiN /t FeCo was determined by the deposition rates and maintained constant at a value of about 3/1. The films were vacuum annealed ex situ in a static magnetic field subsequent to the deposition. The constitution of the as-deposited and annealed coatings as well as their mechanical (nanohardness, Young's modulus) and magnetic properties (magnetization hysteresis, frequency-dependent permeability) are described. Finally, the suitability of the coatings for the use in remote-interrogable wear sensor applications is briefly discussed.

show abstract

Section: Characterization Of the Macroscopic Mechanical And Magnetic mentioning

confidence: 99%

Multifunctional FeCo/TiN Multilayer Thin Films with Combined Magnetic and Protective Properties

Klever¹,

Stüber²,

Leiste³

et al. 2009

Adv Eng Mater

View full text Add to dashboard Cite

show abstract

“…One is the method using a microwave cavity where the FMR line width is measured by sweeping the magnetic filed at a fixed frequency [3,4]. The other is the method employing a vector network analyser (VNA) where the frequency is swept under a fixed magnetic field [5][6][7]. Dynamic magnetic properties at arbitrary magnetization states of a sample are important for the actual devices which operate under various magnetic fields [8].…”

Section: Introductionmentioning

confidence: 99%

Dynamic magnetic properties of Fe₇₀Co₃₀(100) single-crystal thin films deposited at various substrate temperatures

Kawai

Asai

Ohtake

et al. 2013

EPJ Web of Conferences

View full text Add to dashboard Cite

Abstract. Crystallographic orientation dependence of Gilbert damping constant, !, has been measured under different static magnetic fields for Fe 70 Co 30 (100) single-crystal thin film samples prepared at various substrate temperatures. Lorentz type resonance peaks are observed for the samples prepared below 200 ºC. For a sample deposited at 400 ºC, broadening of the resonance peak is observed, which is related with an increased surface roughness. ! value decreases monotonically with increasing the static field when the field is applied parallel to the easy magnetization axis, whereas it increases when the field is applied along the hard magnetization axis up to around the anisotropy field and then decreases. The minimum value of ! is determined to be 0.012 for the hard axis under static fields greater than 650 Oe. The value is twice larger compared with that of Fe (100)

show abstract

“…Different methods of characterization of dielectric materials are summarized in (Von Hippel, 1995;Chen, 2004), and various approaches to extract parameters of ferrite materials over different frequency ranges are described in (Polder, 1950;Rado, 1953;Mullen & Carlson, 1956;Lax & Button, 1963;Korolev et al, 2008). Currently there are numerous automated methods for wideband characterization of dielectric and magnetic bulk materials (Nicholson & Ross, 1970;Weir, 1974;Barry, 1986), as well as of thin films (Bekker et al, 2004;Booth et al, 1994). The existing techniques are typically based on various transmission/reflection measurements, either in the frequency domain, or in time domain, in transmission lines, cavities, open space, or using special probes terminated with material samples under test.…”

Section: Introductionmentioning

confidence: 99%

“…The existing techniques are typically based on various transmission/reflection measurements, either in the frequency domain, or in time domain, in transmission lines, cavities, open space, or using special probes terminated with material samples under test. The literature is replete with various measurement techniques (Nicholson & Ross, 1970;Fellner-Feldegg, 1972;Weir, 1974;BakerJarvis, et al, 1993BakerJarvis, et al, , 2001Musil & Zacek, 1986;Ghodgaonkar et al, 1990;Zheng & Smith, 1991;Ganchev et al, 1995;Jargon & Janezic, 1996;Wang et al, 1998;Roussy et al 2004;Ledieu & Acher, 2003;Bekker et al, 2004). For practical EMC purposes, it is convenient to have systematic methodology to help EMC engineers to design and evaluate effectiveness of EMI noise-suppressing materials and structures based on their measured dielectric and magnetic responses.…”

Section: Introductionmentioning

confidence: 99%

Engineering, Modeling and Testing of Composite Absorbing Materials for EMC Applications

Koledintseva¹,

Rozanov²,

Drewniak³

2011

Advances in Composite Materials - Ecodesign and Analysis

View full text Add to dashboard Cite

A new strip line broad-band measurement evaluation for determining the complex permeability of thin ferromagnetic films

Cited by 167 publications

References 12 publications

Multifunctional FeCo/TiN Multilayer Thin Films with Combined Magnetic and Protective Properties

Multifunctional FeCo/TiN Multilayer Thin Films with Combined Magnetic and Protective Properties

Dynamic magnetic properties of Fe₇₀Co₃₀(100) single-crystal thin films deposited at various substrate temperatures

Engineering, Modeling and Testing of Composite Absorbing Materials for EMC Applications

Contact Info

Product

Resources

About

A new strip line broad-band measurement evaluation for determining the complex permeability of thin ferromagnetic films

Cited by 167 publications

References 12 publications

Multifunctional FeCo/TiN Multilayer Thin Films with Combined Magnetic and Protective Properties

Multifunctional FeCo/TiN Multilayer Thin Films with Combined Magnetic and Protective Properties

Dynamic magnetic properties of Fe70Co30(100) single-crystal thin films deposited at various substrate temperatures

Engineering, Modeling and Testing of Composite Absorbing Materials for EMC Applications

Contact Info

Product

Resources

About

Dynamic magnetic properties of Fe₇₀Co₃₀(100) single-crystal thin films deposited at various substrate temperatures