Read performance of tunneling magnetoresistive heads

被引：10

作者：

Ishihara, K ^{[1
]}

Nakada, M ^{[1
]}

Fukami, E ^{[1
]}

Nagahara, K ^{[1
]}

Honjo, H ^{[1
]}

Ohashi, K ^{[1
]}

机构：

[1] NEC Corp, Fuchu, Tokyo 1838501, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2001年 / 37卷 / 04期

关键词：

in situ natural oxidation; shot noise; TMR head; 1/f noise;

D O I：

10.1109/20.950938

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We discuss the read performance, including the off-track performance and noise characteristics, of TMR heads. A vortex-like sense current field in TMR heads creates insensitive zones in the free layer and affects the output voltage and effective read width. The 1/f noise in the MHz-order frequency range was observed. To achieve a low-noise TMR head for high-density recording with small junction area, a high-quality thin ba. a key to obtaining low 1/f noise, as well as small R (.) A products to reduce the shot noise.

引用

页码：1687 / 1690

页数：4

共 6 条

[1] Electrical noise in hysteretic ferromagnet-insulator-ferromagnet tunnel junctions [J].