Effects of lamination on soft magnetic properties of FeN films on sloping surfaces

Sin, Kyusik; Wang, Chuei-Tang; Wang, Shan X.; Clemens, Bruce M.

doi:10.1063/1.364932

Cited by 12 publications

(4 citation statements)

References 8 publications

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“…8, where and indicate scattering vectors for the planes. This result was similarly observed in the synchrotron X-ray diffraction experiments done by Sin et al [5], which produce a smaller defocusing error at higher pole distances. They observed strong (110) peaks at a of 20 , 60 , and 150 when the incident atomic-flux angle was at 135 , which corresponds to an oblique-incident angle of 45 .…”

Section: B Microstructuressupporting

confidence: 82%

“…Researchers have shown that these materials can function as write poles [1], [2], even though several problems still need to be solved. In particular, the neck region of a head slider made from the Fe-based nitride materials has shown magnetic degradation due to oblique-incident deposition [3]- [5]. The resulting low permeability and high coercivity have led to poor head efficiency.…”

Section: Introductionmentioning

confidence: 99%

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Microstructures of FeTaN films in the neck region of magnetic recording heads

Hong

Wang

2001

IEEE Trans. Magn.

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We found that the columns at the neck region of a magnetic recording inductive head slider composed of FeTaN and NiFe are tilted from the surface normal when the pole materials are sputtered at a low substrate bias power. The electron diffraction patterns show that (110) texture has not strongly developed in the FeTaN film. We have not observed noticeable voids throughout the film on the slider, which suggests the absence of microshape anisotropy. This observation is consistent with our previous study of FeTaN blanket films. We confirmed lattice distortion in the FeTaN due to Ta and N incorporation into a Fe matrix. No significant difference in microstructure between the film on the head slider and the blanket film is found. Based on all the information we have gathered, such as X-ray spectra, pole figures, and high-resolution electron micrographs, we established the crystallographic relationship between (110) orientation, columnar direction, and incident atomic flux in the case of oblique-incident deposition of FeTaN films.Index Terms-Fe-based nitride magnetic materials, head sliders, high-saturation-moment magnetic materials, inductive recording heads, oblique-incident deposition.

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Section: B Microstructuressupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Microstructures of FeTaN films in the neck region of magnetic recording heads

Hong

Wang

2001

IEEE Trans. Magn.

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“…This has been seen to have the additional benefit of improving the softness and anisotropy of these films, as well as minimizing the previously reported degradation of magnetic properties and efficiency of sputtered materials on topography, as found on the hill region of TFH writers. [4][5][6][7] …”

Section: Introductionmentioning

confidence: 99%

Effect of lamination period and deposition angle on FeAlN–Al2O3 multilayers

McNeill

Bell

O'Kane

et al. 2000

Journal of Applied Physics

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Magnetic properties and microstructure have been investigated as a function of lamination period in 1-m-thick FeAlN/Al 2 O 3 multilayers. It has been seen that coercivity is weakly dependent on FeAlN thickness in the lamination, consistent with a change in morphology. Within this thickness range, H k is reduced and dispersion increases accordingly. As the deposition angle is increased from 0°to 40°, there is little change in coercivity, while H k increases, from 4 to 8 Oe. Saturation magnetostriction was found to exhibit a strong linear dependence ͑from ϩ1ϫ10 Ϫ6 to Ϫ5ϫ10 Ϫ6 ͒ over the thickness range studied, with weak dependence on the deposition angle. High frequency permeability degraded with increasing FeAlN thickness, which is believed to reflect the reduced anisotropy in these samples. Microstructural analysis via x-ray diffraction and transmission electron microscopy has indicated that the films contain predominately ␣-Fe, and that Al 2 O 3 spacer layers of 20 Å are sufficient to interrupt columnar grain growth. Furthermore, columnar grains formed in samples with thick FeAlN layers do not exhibit canting when grown on tilted substrates.

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“…A four-circle X-ray diffractometer is used to acquire the [3] and lamination [4] have been investigated to attain soft magnetic properties of Fe or Fe-based nitride films on a sloping surface.…”

Section: Introductionmentioning

confidence: 99%

Texture and magnetic properties of FeTaN films bias-sputtered on sloping surfaces

Hong

Wang

Rook³

1998

IEEE Trans. Magn.

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Abslract-The effect of texture evolution on the magnetic properties of FeTaN films sputtered on sloping surfaces is examined as substrate bias and slope angle are varied. When either substrate bias increases or N,/Ar flow ratio decreases, the magnetic properties of the films become much softer. X-ray spectra and pole figures show that the increased substrate bias enhances both (110) fiber texture along the film normal and uniform distribution of [002] axes in the film plane. Increased bombardment of Ar ions also results in reduced (110) lattice spacing. An increased (110) peak intensity is similarly observed when the N21Ar flow ratio is decreased.

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Effects of lamination on soft magnetic properties of FeN films on sloping surfaces

Cited by 12 publications

References 8 publications

Microstructures of FeTaN films in the neck region of magnetic recording heads

Microstructures of FeTaN films in the neck region of magnetic recording heads

Effect of lamination period and deposition angle on FeAlN–Al2O3 multilayers

Texture and magnetic properties of FeTaN films bias-sputtered on sloping surfaces

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