发明名称 |
HYBRID SYNTHETIC ANTIFERROMAGNETIC LAYER FOR PERPENDICULAR MAGNETIC TUNNEL JUNCTION (MTJ) |
摘要 |
A magnetic tunnel junction (MTJ) device includes a free layer. The MTJ also includes a barrier layer coupled to the free layer. The MTJ also has a fixed layer, coupled to the barrier layer. The fixed layer includes a first synthetic antiferromagnetic (SAF) multilayer having a first perpendicular magnetic anisotropy (PMA) and a first damping constant. The fixed layer also includes a second SAF multilayer having a second perpendicular magnetic anisotropy (PMA) and a second damping constant lower than the first damping constant. The first SAF multilayer is closer to the barrier layer than the second SAF multilayer. The fixed layer also includes a SAF coupling layer between the first and the second SAF multilayers. |
申请公布号 |
US2015171316(A1) |
申请公布日期 |
2015.06.18 |
申请号 |
US201314109234 |
申请日期 |
2013.12.17 |
申请人 |
QUALCOMM Incorporated |
发明人 |
PARK Chando;LEE Kangho;KANG Seung Hyuk |
分类号 |
H01L43/10;H01L43/12;H01L43/02 |
主分类号 |
H01L43/10 |
代理机构 |
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代理人 |
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主权项 |
1. A magnetic tunnel junction (MTJ) device, comprising:
a free layer; a barrier layer, coupled to the free layer; and a fixed layer, coupled to the barrier layer, the fixed layer comprising:
a first synthetic antiferromagnetic (SAF) multilayer having a first perpendicular magnetic anisotropy (PMA) and a first damping constant;a second SAF multilayer having a second perpendicular magnetic anisotropy (PMA) and a second damping constant lower than the first damping constant, the first SAF multilayer being closer to the barrier layer than the second SAF multilayer; andan SAF coupling layer between the first and the second SAF multilayers. |
地址 |
San Diego CA US |