Local Energy Minimum Domain States in Magnetite, Titanomagnetite, and Hematite

小行星9725844 私家侦探提出了实验，将建立LEM域状态之间的联系，剩磁，和剩磁稳定性在古磁性重要的矿物，如磁铁矿，钛磁铁矿，赤铁矿。 岩石磁学领域进入了磁畴实验与理论在关键领域交汇的活跃时代。 这种收敛的一个优雅的例子是局部能量最小值或LEM域状态的存在。 LEM磁畴状态立即提出了一种新的机制，用于在精细磁性颗粒中获得剩磁和稳定性，例如那些携带岩石中的古地磁记录的颗粒。 通过这种机制，剩磁将不仅由缺陷处磁畴壁的钉扎控制，而且还由最终LEM状态的物理演化控制。 同样，磁稳定性在很大程度上取决于跃迁到其他LEM所需的能量。 拟议的工作将解决这些影响之间的联系。 ***

9725844 Halgedahl The P.I. proposes experiments that would establish the links among LEM domain states, remanence, and remanent stability in paleomagnetically significant minerals such as magnetite, titanomagnetite, and hematite. The field of rock magnetism has entered an invigorating era in which magnetic domain experiments and theories are converging in key areas. An elegant example of this convergence is the existence of local energy minimum, or LEM, domain states. LEM domain states immediately suggest a new mechanism for remanence acquisition and stability in fine magnetic particles, such as those carrying the paleomagnetic record in rocks. By this mechanism, remanence would not just be controlled by the pinning of magnetic domain walls at defects, but also by the physical evolution of final LEM states. Likewise, magnetic stability would depend largely on the energies required for transitions to other LEMs. The proposed work will address the linages among these effects. ***