CAJ | 학술논문

采用磁控溅射方法在SiO2基体上制备了FePt/FeMn/NiFe/Ta多层膜样品,通过FeMn/NiFe双层膜交换偏置的变化研究了硬磁FePt不同磁化状态对反铁磁层FeMn的影响。实验表明,磁化了的L10相FePt能使FeMn在较薄的情况下（4.5nm）对NiFe产生比较强的交换偏置;而未被磁化的FePt对FeMn/NiFe交换偏置影响并不明显。认为更薄的反铁磁层对另外的铁磁层产生交换偏置是由于硬磁与反铁磁的界面交换耦合作用能增强反铁磁的稳定性。
채용자공천사방법재SiO2기체상제비료FePt/FeMn/NiFe/Ta다층막양품,통과FeMn/NiFe쌍층막교환편치적변화연구료경자FePt불동자화상태대반철자층FeMn적영향。실험표명,자화료적L10상FePt능사FeMn재교박적정황하（4.5nm）대NiFe산생비교강적교환편치;이미피자화적FePt대FeMn/NiFe교환편치영향병불명현。인위경박적반철자층대령외적철자층산생교환편치시유우경자여반철자적계면교환우합작용능증강반철자적은정성。
The FePt/FeMn/NiFe/Ta multilayers were deposited on the SiO2 substrate by using magnetron sputtering system.The effect of hard magnet FePt on the thermal stability of antiferromagnet FeMn had been studied through the variations of exchange coupling between the FeMn and NiFe bilayers.It was found that the L10 phase of FePt makes thin FeMn pin NiFe well and there is no clear effect on the FeMn/NiFe exchange bias when FePt not magnetized.We attributed this to that the exchange coupling between hard magnet and the antiferromagnet can enhance the anisotropy energy of the antiferromagnet.