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Transport and switching behaviors in magnetic tunnel junctions consisting of CoFeB/FeNiSiB hybrid free layers
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10.1063/1.4709738
/content/aip/journal/jap/111/9/10.1063/1.4709738
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/9/10.1063/1.4709738

Figures

Image of FIG. 1.
FIG. 1.

The transport characteristics of MTJs with (a) 2 nm thick and (b) 3 nm thick free layer at V read = 5 mV.

Image of FIG. 2.
FIG. 2.

The cross sectional images of Type (2-b) (a) and Type (2-d) by HRTEM after annealing at 320  °C. Above the MgO(001), Type (2-b) exhibits a clear bcc structure. However, Type (2-d) appears to be partially crystallized (yellow dash).

Image of FIG. 3.
FIG. 3.

The voltage versus resistance curves of Type (1-c) (a) and Type (2-b) (b). The H off indicates the offset field to obtain the switching regime. The junction size is 80 × 160 nm2. The voltage sweep rate = 0.005 (Vstep)/0.005 (s) = 1 (V/s) with no interval.

Image of FIG. 4.
FIG. 4.

The temperature dependence of (a) the switching field of Type (2-b) with four different read voltages and (b) the coercivity; H c = |H (P to AP)H (AP to P)|/2.

Tables

Generic image for table
Table I.

Design scheme of the MTJs with various free layer structures, and the measured magnetotransport values from Fig. 1.

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/content/aip/journal/jap/111/9/10.1063/1.4709738
2012-05-07
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Transport and switching behaviors in magnetic tunnel junctions consisting of CoFeB/FeNiSiB hybrid free layers
http://aip.metastore.ingenta.com/content/aip/journal/jap/111/9/10.1063/1.4709738
10.1063/1.4709738
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