High moment and high frequency permeability Fe–B–N nanocrystalline soft magnetic films

Kim, K.H.; Jeong, Jichai; Kim, J.; Han, Suk Hee; Kim, H.J.

doi:10.1016/s0304-8853(01)00667-9

Cited by 12 publications

(5 citation statements)

References 4 publications

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“…. The various meta‐stable mixed phases exhibited γ′‐Fe 4 N, FeB phases, and an ambiguous new phase, which is believed to be a nonmagnetic BN phase in the grain boundaries of the α‐Fe grains . These results were verified by the TEM diffraction pattern as shown in Fig.…”

Section: Resultssupporting

confidence: 57%

Effect of the magnetization process on low-field microwave absorption by FeBN magnetic thin film

Lee

Kim

2014

Phys. Status Solidi A

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The magnetization process of a typical soft magnetic film was examined using ferromagnetic resonance (FMR) measurements on 9.84 GHz. A 500-nm-thick Fe 85.9 B 2.6 N 11.5 film with inplane uniaxial magnetic anisotropy was deposited by RF sputtering. The saturation magnetization and coercivity of the FeBN magnetic film were 17.3 kG and 2.4 Oe, respectively, at the hard direction. The microwave absorption signals showed two different absorption peaks: small signals at a near zero dc field and at a high dc field. The resonance magnetic fields for the major and minor peaks were observed at 532 and 604 Oe, respectively. The g-factor obtained was 2.15. The uniaxial magnetic anisotropy field was approximately 14 Oe by vibrating sample magnetometer, which coincided with that of the FMR results. The absorption at a low-field revealed different characteristics from those of conventional FMR absorption. The magnetic anisotropy field obtained by low-field microwave absorption was approximately 13.5 Oe, which is comparable to that of the FMR and VSM results.

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Section: Resultssupporting

confidence: 57%

Effect of the magnetization process on low-field microwave absorption by FeBN magnetic thin film

Lee

Kim

2014

Phys. Status Solidi A

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“…Ni content also affects the stability of the resonance frequency and the initial susceptibility [2]. Generally, χ ac is used at high frequency [3]. However, few studies have measured χ ac at low frequency.…”

Section: Introductionmentioning

confidence: 99%

Effect of Low‐Frequency Alternative‐Current Magnetic Susceptibility in Ni₈₀Fe₂₀ Thin Films

Chen

Lin

2012

Journal of Nanomaterials

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X-ray diffraction (XRD) results indicate that the NiFe thin films had a face-centered cubic (FCC) structure. Post-annealing treatment increased the crystallinity of NiFe films over those at room temperature (RT), suggesting that NiFe crystallization yields FCC (111) texturing. Post-annealing treatments increase crystallinity over that obtained at RT. This paper focuses on the maximum alternative-current magnetic susceptibility(χac)value of NiFe thin films with resonance frequency(fres)at low frequencies from 10 Hz to 25000 Hz. These results demonstrate that theχacof NiFe thin films increased with post-annealing treatment and increasing thickness. The NiFe (111) texture suggests that the relationship between magneto-crystalline anisotropy and the maximumχacvalue with optimal resonance frequency(fres)increased spin sensitivity at optimalfres. The results obtained under the three conditions revealed that the maximumχacvalue and optimalfresof a 1000 Å-thick NiFe thin film are 3.45 Hz and 500 Hz, respectively, following postannealing atTA=250°C for 1 h. This suggests that a 1000 Å NiFe thin film post-annealed atTA=250°C is suitable for gauge sensor and transformer applications at low frequencies.

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“…The dependence of the magnetic properties of amorphous Fe x B 100Àx [7,8] and of crystalline Fe y N x [9][10][11][12] films on the boron and on the nitrogen concentration, respectively, is well known. Moreover, some studies have been done in Fe-B-N ternary alloys in which boron and nitrogen have been implanted in pure Fe films at different fluencies [13], in amorphous Fe-B-N alloys grown by co-sputtering onto a BN and a pure Fe target [14] and in crystalline Fe-B-N films prepared by reactive RF magnetron sputtering [15]. These studies show the variation of structural, electrical and corrosion resistance properties as a function of the nitrogen concentration for amorphous films, as well as the dependence of the magnetic properties on the nitrogen concentration for crystalline films with a concentration of Fe larger than 80 at%.…”

Section: Introductionmentioning

confidence: 99%

Nitrided FeB amorphous thin films for magneto mechanical systems

Fernández-Martínez¹,

Martín‐González²,

González-Arrabal

et al. 2008

Journal of Magnetism and Magnetic Materials

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High moment and high frequency permeability Fe–B–N nanocrystalline soft magnetic films

Cited by 12 publications

References 4 publications

Effect of the magnetization process on low-field microwave absorption by FeBN magnetic thin film

Effect of the magnetization process on low-field microwave absorption by FeBN magnetic thin film

Effect of Low‐Frequency Alternative‐Current Magnetic Susceptibility in Ni₈₀Fe₂₀ Thin Films

Nitrided FeB amorphous thin films for magneto mechanical systems

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High moment and high frequency permeability Fe–B–N nanocrystalline soft magnetic films

Cited by 12 publications

References 4 publications

Effect of the magnetization process on low-field microwave absorption by FeBN magnetic thin film

Effect of the magnetization process on low-field microwave absorption by FeBN magnetic thin film

Effect of Low‐Frequency Alternative‐Current Magnetic Susceptibility in Ni80Fe20 Thin Films

Nitrided FeB amorphous thin films for magneto mechanical systems

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Effect of Low‐Frequency Alternative‐Current Magnetic Susceptibility in Ni₈₀Fe₂₀ Thin Films