论文标题
cocrpt-ru-cocrpt合成铁磁铁中的温度依赖性磁过渡
Temperature-dependent Magnetic Transitions in CoCrPt-Ru-CoCrPt Synthetic Ferrimagnets
论文作者
论文摘要
在温度范围为2 K至300 K的温度范围内，已经研究了Cocrpt-Ru-Cocrpt合成的Ferrimagnet的磁取向和开关场。发现两组磁性过渡发生在此温度范围内的COCRPT-RU-COCRPT FERRIMAGNET中。第一组在50 K -370 K范围内表现出三个磁过渡，而第二组仅涉及2 K和50 K范围内的两个跃迁。使用Koplak等人开创的能量图技术框架来解释合成铁磁铁的观察到的磁性磁滞曲线。 [1]准确地描述了系统中层间交换耦合能，Zeeman Energy和各向异性能量之间的竞争。在这项工作中，我们将框架扩展到包括较高垂直磁各向异性材料的合成铁磁铁（SFM）和大型（4X）层间交换偶联能量，这有望开发MTJ结构中超快（PS）磁性开关的超快（PS）磁性开关。此外，我们将分析应用于温度极端的温度极端状态，预测合成超磁体的温度极值，如果合成的铁磁铁有望可靠地运行，如果将其用作存储器或传感器旋转器设备中的自由层。
The magnetic orientations and switching fields of a CoCrPt-Ru-CoCrPt synthetic ferrimagnet with perpendicular magnetic anisotropy have been studied in the temperature range from 2 K to 300 K. It was found that two sets of magnetic transitions occur in the CoCrPt-Ru-CoCrPt ferrimagnet across this temperature range. The first set exhibits three magnetic transitions in the 50 K - 370 K range, whereas the second involves only two transitions in the 2 K and 50 K range. The observed magnetic hysteresis curves of the synthetic ferrimagnet are explained using the energy diagram technique framework pioneered by Koplak et al. [1] which accurately describes the competition between interlayer exchange coupling energy, Zeeman energy, and anisotropy energy in the system. In this work we expand the framework to include synthetic ferrimagnets (SFMs) comprising higher perpendicular magnetic anisotropy materials and large (4X) interlayer exchange coupling energies which are promising for the development of ultrafast (ps) magnetic switching free layers in MTJ structures. Furthermore, we apply the analysis to predict SFM magnetic hysteresis curves in a temperature regime that includes temperature extrema that a synthetic ferrimagnet would be expected to reliably operate at, were it to be utilized as a free layer in a memory or sensor spintronic device.
