Evaluation method of magnetic head and evaluation device of magnetic head

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United States of America Patent

PATENT NO 11488623
SERIAL NO

17389951

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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According to one embodiment, an evaluation method of a magnetic head is disclosed. The method can include acquiring an electrical signal obtained from a magnetic element when supplying a first alternating current to a coil of a magnetic head and supplying a second current to the magnetic element. The magnetic head includes a first magnetic pole, a second magnetic pole, and a coil. The magnetic element is provided between the first magnetic pole and the second magnetic pole, and includes a first magnetic layer. The method can include detecting a time required for a change of an electrical resistance of the magnetic element based on a time when a polarity of the first alternating current is reversed based on the electrical signal.

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Patent Owner(s)

  • KABUSHIKI KAISHA TOSHIBA; TOSHIBA ELECTRONIC DEVICES & STORAGE CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Maeda, Tomoyuki Kawasaki, JP 155 1442
Nagasawa, Tazumi Yokohama, JP 65 502
Narita, Naoyuki Funabashi, JP 72 751
Suto, Hirofumi Ota, JP 45 291
Takagishi, Masayuki Kunitachi, JP 172 3387

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