Stabilization of Antiferromagnetic Order in FeO Nanolayers
Stabilization of Antiferromagnetic Order in FeO Nanolayers
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DOI：
10.1103/physrevlett.103.097201
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发表时间：
2009-08-28
影响因子：
8.6
通讯作者：
Roehlsberger, R.
中科院分区：
文献类型：
--
作者：
Couet, S.;Schlage, K.;Roehlsberger, R.
利用同步辐射核共振散射研究了纳米反铁磁（AFM）FeO层形成过程中磁态的演化。与铁磁Fe接触时，FeO层在室温下不显示磁序。一旦嵌入两个Fe层之间，与相邻铁磁体的磁耦合导致Neacuteel温度急剧升高，远高于RT，而阻挡温度保持在30 K以下。所提出的结果证明了铁磁环境在修改AFM层的磁性状态中所起的作用。
We have studied the evolution of the magnetic state of a nanometer thick antiferromagnetic (AFM) FeO layer during its formation using nuclear resonant scattering of synchrotron radiation. In contact to ferromagnetic Fe, the FeO layer does not show magnetic order at room temperature (RT). Once embedded between two Fe layers, magnetic coupling to the adjacent ferromagnets leads to a drastic increase of the Neacuteel temperature far above RT, while the blocking temperature remains below 30 K. The presented results evidence the role that the ferromagnetic surrounding plays in modifying the magnetic state of ultrathin AFM layers.