Apparatus and method having TDMR reader to reader shunts
View Patent ↗A method of making a magnetic head is provided. The method includes forming a first read sensor and a first electrical contact formed with a first shunt region. The method further includes forming a first mid-shield layer on the first read sensor, the first mid-shield layer being electrically connected to the first electrical contact. Additionally the method also includes forming a second mid-shield layer over the first mid-shield layer. Further, the method also includes forming a second read sensor over the second mid-shield layer, the second read sensor having a second electrical contact formed with a second shunt region electrically connected to the first shunt region.
1. A layered micro-structure for a magnetic head, the micro-structure comprising:
a first read sensor and a first electrical contact with a first shunt region;
a first mid-shield layer formed on the first read sensor, the first mid-shield layer being electrically connected to the first electrical contact;
a second mid-shield layer formed over the first mid-shield layer; and
a second read sensor formed over the second mid-shield layer, the second read sensor having a second electrical contact between the second read sensor and the second mid-shield layer, the second electrical contact having a second shunt region electrically connected to the first shunt region; and
a first electrical connection layer formed between, and electrically connecting, the first shunt region and the second shunt region.
2. The micro-structure of claim 1 , wherein the first electrical connection layer comprises an electrically resistive layer formed between the first shunt region and the second shunt region.
3. The micro-structure of claim 1 , further comprising:
a first outer shield layer, wherein the first read sensor is formed over the first outer shield layer; and
a second outer shield layer formed over the second read sensor.
4. The micro-structure of claim 1 , wherein the first shunt region is formed in a region of the micro-structure that is removable to form an air bearing surface; and
wherein the second shunt region is formed in the region of the micro-structure that is removable to form the air bearing surface.
5. The micro-structure of claim 1 , wherein the second read sensor further comprises a third electrical contact having a third shunt region; and
wherein the micro-structure further comprises:
a third mid-shield layer formed over the second read sensor, the third mid-shield layer being electrically connected to the third electrical contact;
a fourth mid-shield layer formed over the third mid-shield layer; and
a third read sensor formed over the fourth mid-shield layer, the third read sensor having a fourth electrical contact including a fourth shunt region electrically connected to the third shunt region; and
a second electrical connection layer formed between, and electrically connecting, the fourth shunt region and the third shunt region.
6. The micro-structure of claim 5 , wherein the first electrical connection layer comprises a first electrically resistive layer formed between the first shunt region and the second shunt region; and
wherein the second electrical connection layer comprises a second electrically resistive layer formed between the third shunt region and the fourth shunt region.
7. The micro-structure of claim 5 , further comprising:
a first outer shield layer, wherein the first read sensor is formed over the first outer shield layer; and
a second outer shield layer formed over the third read sensor.
8. The micro-structure of claim 5 , wherein the first shunt region is formed in a region of the microstructure that is removable to form an air bearing surface;
wherein the second shunt region is formed in the region of the micro-structure that is removable to form the air bearing surface;
wherein the third shunt region is formed in the region of the micro-structure that is removable to form the air bearing surface; and
wherein the fourth shunt region is formed in the region of the micro-structure that is removable to form the air bearing surface.
9. A storage device comprising:
a storage medium; and
a slider disposed proximate to the storage medium, the slider comprising the micro-structure according to claim 1 mounted on the slider.