Oscillations of the Curie temperature and interlayer exchange coupling in magnetic trilayers
Oscillations of the Curie temperature and interlayer exchange coupling in magnetic trilayers
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DOI：
10.1103/physrevb.59.r3938
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发表时间：
1999-02
影响因子：
3.7
通讯作者：
A. Ney;F. Wilhelm;M. Farle;P. Poulopoulos;P. Srivastava;K. Baberschke
中科院分区：
文献类型：
--
作者：
A. Ney;F. Wilhelm;M. Farle;P. Poulopoulos;P. Srivastava;K. Baberschke
在Cu（001）上，在Cu（001）上，通过元素特异性X射线磁性磁性二色圆形研究，研究了远距离磁顺序在交换耦合的外延co/cu/cu/ni Trilayers，2 \ char21 {} 4个单层（ml）的发作超高真空中的30和300 k。 ni $（\ ensuremath {\ delta} {t} _ {\ mathrm {ni}} $的增强序列温度的振荡，超过40 k的振荡是通过改变cu（通过更改cu（改变cu）的函数的40 k 001）间隔厚度。测量低于2.3 ml抗铁磁耦合的CU厚度。 $ \ nesuremath {\ delta} {t} _ {\ mathrm {ni}} $振荡的时期，相位和振幅与短期和长期振荡的理论预测非常吻合耦合。
The onset of long-range magnetic order in exchange-coupled epitaxial Co/Cu/Ni trilayers, 2\char21{}4 monolayers (ML) each, on Cu(001) is studied by element-specific x-ray magnetic circular dichroism between 30 and 300 K in ultrahigh vacuum. Oscillations of the enhancement of the ordering temperature of Ni $(\ensuremath{\Delta}{T}_{\mathrm{Ni}})$ by more than 40 K are measured as a function of interlayer exchange interaction by varying the Cu(001) spacer thickness. Below a Cu thickness of 2.3 ML antiferromagnetic coupling is measured. The period, phase, and amplitude of the $\ensuremath{\Delta}{T}_{\mathrm{Ni}}$ oscillations are in excellent agreement with the theoretical prediction for the short- and long-period oscillations of the interlayer exchange coupling.