物理学报2011，Vol.60Issue(8)：745-750,6.
退火对IrMn基磁隧道结多层膜热稳定性的影响
Influence of annealing on thermal stability of IrMn-based magnetic tunnel juctions
摘要
Abstract
The magnetic tunnel junction with a structure of IrMn/CoFe/AlOx/CoFe is deposited by magnetron sputtering and annealed at different temperatures in a magnetic field of parallel to the orienting field.Vibrating sample magnetometer is used to record the magnetic hysteresis loop at room temperature,and scanning probe microscope is used to record the interface morphology.The influence of annealing on thermal stability of the magnetic tunnel junction is investigated by holding the film in its negative saturation field.After annealing,the exchange bias increases due to the enhancement of unidirectional anisotropy of antiferromagnetic layer.The recoil loop of the pinned ferromagnetic layer shifts towards the positive field,and the exchange bias field decreases monotonically,with the film held in a negative saturation field,whereas annealing reduces the reduction speed of Hex.关键词
磁隧道结/交换偏置/磁化反转Key words
magnetic tunnel junction/exchange bias/magnetization reversal分类
数理科学引用本文复制引用
闫静,祁先进,王寅岗..退火对IrMn基磁隧道结多层膜热稳定性的影响[J].物理学报,2011,60(8):745-750,6.基金项目
国家自然科学基金（批准号：50671048）资助的课题 （）
