Magneto-resistance effect type head

Abstract

Abstract Translated from Japanese (57)【要約】 【目的】磁気抵抗効果素子にループ状の磁区を生じさせ ないようにし、バルクハウゼン雑音が発生しないように することを目的とする。 【構成】磁気記録媒体に残留磁化の形で記録された情報 を、磁気抵抗効果を有する磁気抵抗効果素子に前記残留 磁化からの信号磁界を印加し、その抵抗変化として読取 る磁気抵抗効果型ヘッドにおいて、磁気抵抗効果素子１ に磁気記録媒体の残留磁化に対向する矩形状の情報検知 部１ａを有し、この情報検知部１ａの少なくとも一端側 を伸ばして、情報検知部１ａと同等あるいはそれより広 い幅で情報検知部１ａの磁区を単磁区化するための、バ イアス磁界を加えるバイアス磁界印加部１ｂを設け、こ のバイアス磁界印加部１ｂの側面に、微小間隙を隔てて バイアス磁界を生じさせる電流を流す導体２を設けたこ とを特徴とする磁気抵抗効果型ヘッド。 (57) [Abstract] [Purpose] The purpose is to prevent generation of a loop-shaped magnetic domain in a magnetoresistive effect element and to prevent Barkhausen noise. A magnetoresistive head for reading information recorded in the form of remanent magnetization on a magnetic recording medium as a resistance change by applying a signal magnetic field from the remanent magnetization to a magnetoresistive effect element having a magnetoresistive effect. , Magnetoresistive effect element 1 Has a rectangular information detecting portion 1a facing the remanent magnetization of the magnetic recording medium, and extends at least one end side of the information detecting portion 1a so as to have a width equal to or wider than the information detecting portion 1a. A bias magnetic field applying section 1b for applying a bias magnetic field is provided to make the magnetic domain of the magnetic field into a single magnetic domain, and a conductor 2 is provided on a side surface of the bias magnetic field applying section 1b to flow a current for generating a bias magnetic field with a minute gap. A magnetoresistive head having the following characteristics.

Inventors

• 👤 Yoshibumi Mizoshita
• 👤 義文 溝下
• 👤 Hitoshi Kanai
• 👤 均 金井

Bibliographic Details