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Numerical failure analysis of current-confined-path current perpendicular-to-plane giant magnetoresistance spin-valve read sensors under high current density
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10.1063/1.3536472
/content/aip/journal/jap/109/3/10.1063/1.3536472
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/3/10.1063/1.3536472

Figures

Image of FIG. 1.
FIG. 1.

Schematic illustration of CCP-CPP GMR SV: bottom electrode/NiFe 9/IrMn 13.5/CoFe 3.6/Ru 0.9/CoFe 3.6/CCP 1.8/CoFe 0.9/NiFe 3.6/Ta 4.5/top electrode (all in nanometer).

Image of FIG. 2.
FIG. 2.

(a) Temperature distribution profiles, and (b) RA product values of CCP-CPP GMR SV read sensors electrically stressed at the constant operating current density of with different Cu metallic path densities. 3D images of current density and temperature distribution in the CCP region with different path densities of (c) 5%, (d) 10%, and (e) 20%. (Sensor size: ).

Image of FIG. 3.
FIG. 3.

(a) Temperature distribution profiles of CCP-CPP GMR SV read sensors electrically stressed at the constant operating current density of with different Cu metallic path distributions. 3D images of current density and temperature distribution in the CCP region with path distributions and patterns (b) pattern 1, (c) pattern 2, and (d) pattern 3.

Image of FIG. 4.
FIG. 4.

Temperature distribution profiles of CCP-CPP GMR SV read sensors electrically stressed at the constant operating current density of with different Cu metallic path resistivity.

Image of FIG. 5.
FIG. 5.

Temperature distribution profiles of CCP-CPP GMR SV read sensors electrically stressed at the different operating current densities changed from to (metal path density: 10%).

Image of FIG. 6.
FIG. 6.

Dependence of operating current density on the temperature gradient at the interface of Cu/CoFe and the Cu atomic flux into the free CoFe in CCP-CPP GMR SV read sensors with different metal path densities.

Tables

Generic image for table
Table I.

Electrical and thermal properties of the thin films used in the finite element calculation.

Generic image for table
Table II.

Calculated energy change driven by or and the ratio in the CCP-CPP GMR SV read sensors electrically stressed at the different operating current densities changed from to .

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/content/aip/journal/jap/109/3/10.1063/1.3536472
2011-02-01
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Numerical failure analysis of current-confined-path current perpendicular-to-plane giant magnetoresistance spin-valve read sensors under high current density
http://aip.metastore.ingenta.com/content/aip/journal/jap/109/3/10.1063/1.3536472
10.1063/1.3536472
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