The electrical and magnetic response of yoke-type read heads based on a magnetic tunnel junction

被引:16
作者
Coehoorn, R [1 ]
Cumpson, SR [1 ]
Ruigrok, JJM [1 ]
Hidding, P [1 ]
机构
[1] Philips Res Labs, NL-5656 AA Eindhoven, Netherlands
关键词
giant magnetoresistance; tunnel magnetoresistance; magnetic head modelling; signal to noise ratio;
D O I
10.1109/20.800898
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
Based on model calculations a comparison is made between yoke-type read heads containing a tunnel junction magnetoresistive element (TMRE) and containing a giant magnetoresistive element (GMRE). For typical head design parameters, TMR-based heads are 3-5 times more flux-efficient than GMR-based heads. However, for approximately 1 x 1 mu m(2) elements, the SNR of TMRE-based heads is not advantageous as long as the junction's tunnel resistance is not drastically reduced below R = 1 k Omega.
引用
收藏
页码:2586 / 2588
页数:3
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