Fitzsimmons MR, Yashar P, Leighton C, Schuller IK, Nogues J, Majkrzak CF, Dura JA
Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
Phys Rev Lett. 2000 Apr 24;84(17):3986-9. doi: 10.1103/PhysRevLett.84.3986.
Polarized neutron reflectometry is used to probe the in-plane projection of the net-magnetization vector M--> of polycrystalline Fe films exchange coupled to twinned (110) MnF (2) or FeF (2) antiferromagnetic (AF) layers. The magnetization reversal mechanism depends upon the orientation of the cooling field with respect to the twinned microstructure of the AF, and whether the applied field is increased to (or decreased from) a positive saturating field; i.e. , the magnetization reversal is asymmetric. The reversal of the sample magnetization from one saturated state to the other occurs via either domain wall motion or magnetization rotation on opposite sides of the same hysteresis loop.
极化中子反射测量法用于探测与孪晶（110）MnF₂ 或 FeF₂ 反铁磁（AF）层交换耦合的多晶铁膜净磁化矢量 M→ 的面内投影。磁化反转机制取决于冷却场相对于反铁磁体孪晶微观结构的取向，以及外加磁场是增加到（或从）正饱和场减小；即，磁化反转是不对称的。样品磁化强度从一个饱和状态反转到另一个饱和状态是通过同一磁滞回线两侧的畴壁运动或磁化旋转发生的。
