Choking Nonlocal Magnetic Damping in Exchange-Biased Ferromagnets
Choking Nonlocal Magnetic Damping in Exchange-Biased Ferromagnets
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DOI：
10.1103/physrevapplied.11.011001
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发表时间：
2018-11
影响因子：
4.6
通讯作者：
T. Moriyama;K. Oda;T. Ono
中科院分区：
文献类型：
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作者：
T. Moriyama;K. Oda;T. Ono
我们研究了交换偏置的Pt/Fe_（50）Mn_（50）/Fe_（20）Ni_（80）/SiOx多层膜的磁阻尼随温度的变化。在具有较强的交换偏置的样品中，我们观察到随着温度升高到阻断温度，FeNi的磁阻尼急剧下降。结果表明，磁阻尼的非局域增强可以被相邻的反铁磁体及其与温度相关的交换偏置所抑制。我们还指出，这种强的温度依赖性阻尼可能是非常有益的自旋电子学应用。
We investigated the temperature dependence of the magnetic damping in the exchange biased Pt/ Fe50Mn50 /Fe20Ni80 /SiOx multilayers. In samples having a strong exchange bias, we observed a drastic decrease of the magnetic damping of the FeNi with increasing temperature up to the blocking temperature. The results essentially indicate that the non-local enhancement of the magnetic damping can be choked by the adjacent antiferromagnet and its temperature dependent exchange bias. We also pointed out that such a strong temperature dependent damping may be very beneficial for spintronic applications.