New high field single-pole head design with an ultra-fine coil

K. Yamakawa; K. Ise; K. Ouchi; K. Sagae; H. Muraoka; H. Aoi; Y. Nakamura

doi:10.1016/j.jmmm.2004.10.060

New high field single-pole head design with an ultra-fine coil

K. Yamakawa, K. Ise, K. Ouchi, K. Sagae, H. Muraoka, H. Aoi, Y. Nakamura

Broadband Engineering Division

Research output: Contribution to journal › Article › peer-review

Abstract

Improvement in head field of single-pole heads was investigated in terms of coil design. From a simple analysis on hollow cylinder-shaped coil, a quite strong field was found to be created for the coil with inner diameter less than 100 nm. According to this result, a new single-pole head having an ultra-fine coil at its main-pole tip was proposed. The field calculation with FEM showed the new head designed for 1 Tbit/in² exhibited a strong field larger than 30 kOe owing to enhancement of coil field. Furthermore, a sub-return yoke placed close to the main pole improved head field gradient.

Original language	English
Pages (from-to)	367-371
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	287
Issue number	SPEC. ISS.
DOIs	https://doi.org/10.1016/j.jmmm.2004.10.060
Publication status	Published - 2005 Feb

Keywords

Coil
Field gradient
Field strength
Single-pole head

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/j.jmmm.2004.10.060

Cite this

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title = "New high field single-pole head design with an ultra-fine coil",

abstract = "Improvement in head field of single-pole heads was investigated in terms of coil design. From a simple analysis on hollow cylinder-shaped coil, a quite strong field was found to be created for the coil with inner diameter less than 100 nm. According to this result, a new single-pole head having an ultra-fine coil at its main-pole tip was proposed. The field calculation with FEM showed the new head designed for 1 Tbit/in2 exhibited a strong field larger than 30 kOe owing to enhancement of coil field. Furthermore, a sub-return yoke placed close to the main pole improved head field gradient.",

keywords = "Coil, Field gradient, Field strength, Single-pole head",

author = "K. Yamakawa and K. Ise and K. Ouchi and K. Sagae and H. Muraoka and H. Aoi and Y. Nakamura",

note = "Funding Information: The authors would like to thank Dr. S. Iwasaki, president of Tohoku Inst. of Tech., for his helpful advice and encouragement. This work was partly supported by the IT-program (RR2002) from MEXT.",

year = "2005",

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doi = "10.1016/j.jmmm.2004.10.060",

language = "English",

volume = "287",

pages = "367--371",

journal = "Journal of Magnetism and Magnetic Materials",

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TY - JOUR

T1 - New high field single-pole head design with an ultra-fine coil

AU - Yamakawa, K.

AU - Ise, K.

AU - Ouchi, K.

AU - Sagae, K.

AU - Muraoka, H.

AU - Aoi, H.

AU - Nakamura, Y.

N1 - Funding Information: The authors would like to thank Dr. S. Iwasaki, president of Tohoku Inst. of Tech., for his helpful advice and encouragement. This work was partly supported by the IT-program (RR2002) from MEXT.

PY - 2005/2

Y1 - 2005/2

N2 - Improvement in head field of single-pole heads was investigated in terms of coil design. From a simple analysis on hollow cylinder-shaped coil, a quite strong field was found to be created for the coil with inner diameter less than 100 nm. According to this result, a new single-pole head having an ultra-fine coil at its main-pole tip was proposed. The field calculation with FEM showed the new head designed for 1 Tbit/in2 exhibited a strong field larger than 30 kOe owing to enhancement of coil field. Furthermore, a sub-return yoke placed close to the main pole improved head field gradient.

AB - Improvement in head field of single-pole heads was investigated in terms of coil design. From a simple analysis on hollow cylinder-shaped coil, a quite strong field was found to be created for the coil with inner diameter less than 100 nm. According to this result, a new single-pole head having an ultra-fine coil at its main-pole tip was proposed. The field calculation with FEM showed the new head designed for 1 Tbit/in2 exhibited a strong field larger than 30 kOe owing to enhancement of coil field. Furthermore, a sub-return yoke placed close to the main pole improved head field gradient.

KW - Coil

KW - Field gradient

KW - Field strength

KW - Single-pole head

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VL - 287

SP - 367

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JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - SPEC. ISS.

ER -

New high field single-pole head design with an ultra-fine coil

Abstract

Keywords

ASJC Scopus subject areas

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