首页> 外文期刊>Journal of magnetism and magnetic materials >Transition from reversible to irreversible magnetic exchange-spring processes in antiferromagnetically exchange-coupled hard/soft/hard trilayer structures
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Transition from reversible to irreversible magnetic exchange-spring processes in antiferromagnetically exchange-coupled hard/soft/hard trilayer structures

机译:在反铁磁交换耦合的硬/软/硬三层结构中从可逆的磁性交换弹簧过程过渡到不可逆的磁性交换过程

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The demagnetization processes of antiferromagnetically exchange-coupled hard/soft/hard trilayer structures have been studied based on the discrete one-dimensional atomic chain model and the linear partial domain-wall model. It is found that, when the magnetic anisotropy of soft layer is taken into account, the changes of the soft layer thickness and the interfacial exchange coupling strength may lead a transition of demagnetization process in soft layer from the reversible to the irreversible magnetic exchange-spring process. For the trilayer structures with very thin soft layer, the demagnetization process exhibits typical reversible exchange-spring behavior. However, as the thickness of soft layer is increased, there is a crossover point t_c, after which the process becomes irreversible. Similarly, there is also a critical interfacial exchange coupling constant A_(sh)~c, above which the exchange-spring process is reversible. When A_(sh)
机译:基于离散的一维原子链模型和线性局部畴壁模型,研究了反铁磁交换耦合的硬/软/硬三层结构的退磁过程。结果发现,考虑到软层的磁各向异性,软层厚度和界面交换耦合强度的变化可能导致软层中的去磁过程从可逆磁交换弹簧转变为不可逆磁交换弹簧。处理。对于具有非常薄的软层的三层结构,退磁过程表现出典型的可逆交换弹簧行为。但是,随着软层厚度的增加,会有一个交点t_c,此后该过程变得不可逆。类似地,也存在临界界面交换耦合常数A_(sh)〜c,在该常数之上,交换弹簧过程是可逆的。当A_(sh)

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