论文标题
Mn-Ni-Ga磁铁中磁性手性气泡和ACHIRAL气泡的热诱导产生和an灭
Thermally induced generation and annihilation of magnetic chiral skyrmion bubbles and achiral bubbles in Mn-Ni-Ga Magnets
论文作者
论文摘要
磁性手性天空气泡和Achiral气泡是两个独立的磁性域结构，在该结构中，与Skyrmions相等的绕组数量的前者为进一步的Spintronic设备提供了巨大的希望。在这里，在这项工作中，我们使用Lorentz透射电子显微镜（L-TEM）在MN-Ni-GA薄板中实验研究了磁性手性天空气泡和ACHIRAL气泡的产生和an灭。在场冷却操作后，可以直接控制两个独立的磁性域结构，从而改变了标题的外部磁场角。通过对温度升高的磁化逆转进行成像，我们发现了磁性的气泡气泡的非凡an灭模式和绕组数逆转的非线性频率。通过使用L-TEM直接确定磁性手性天空气泡的磁化逆转的屏障能进行定量分析。
Magnetic chiral skyrmion bubbles and achiral bubbles are two independent magnetic domain structures, in which the former with equivalent winding number to skyrmions offers great promise as information carriers for further spintronic devices. Here, in this work, we experimentally investigate the generation and annihilation of magnetic chiral skyrmion bubbles and achiral bubbles in the Mn-Ni-Ga thin plate by using the Lorentz transmission electron microscopy (L-TEM). The two independent magnetic domain structures can be directly controlled after the field cooling manipulation by varying the titled angles of external magnetic fields. By imaging the magnetization reversal with increasing temperature, we found an extraordinary annihilation mode of magnetic chiral skyrmion bubbles and a non-linear frequency for the winding number reversal. Quantitative analysis of such dynamics was performed by using L-TEM to directly determine the barrier energy for the magnetization reversal of magnetic chiral skyrmion bubbles.
