Enhancement of domain-wall mobility detected by NMR at the angular momentum compensation temperature
Enhancement of domain-wall mobility detected by NMR at the angular momentum compensation temperature
复制标题
核磁共振检测角动量补偿温度下磁畴壁迁移率的增强
DOI：
10.1103/physrevb.102.014407
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发表时间：
2020
影响因子：
3.7
通讯作者：
Saitoh Eiji
中科院分区：
文献类型：
--
作者：
Imai Masaki;Chudo Hiroyuki;Matsuo Mamoru;Maekawa Sadamichi;Saitoh Eiji
亚铁磁体的角动量补偿温度由于近区的高速磁动力学特性而备受关注。结果表明，核磁共振可以用来研究亚铁磁体附近的磁场壁动力学。我们用K对亚铁磁体进行了测量。在多磁区状态下，核磁共振信号通过磁区-壁运动得到增强。我们发现，核磁共振信号增强在多域态时表现出最大值。核磁共振信号的增强是由于磁区壁迁移率的增加。我们建立了考虑磁区-壁迁移率的核磁共振信号增强模型。我们的研究表明，多域态的核磁共振是一种强有力的工具，即使是从粉末样品中也可以确定，它扩大了寻找角动量补偿材料的可能性。
The angular momentum compensation temperatureof ferrimagnets has attracted much attention because of high-speed magnetic dynamics near. We show that NMR can be used to investigate domain-wall dynamics nearin ferrimagnets. We performedmeasurements on the ferrimagnetwithK. In a multidomain state, the NMR signal is enhanced by domain-wall motion. We found that the NMR signal enhancement shows a maximum atin the multidomain state. The NMR signal enhancement occurs due to increasing domain-wall mobility toward. We develop the NMR signal enhancement model involves domain-wall mobility. Our study shows that NMR in multidomain state is a powerful tool to determine, even from a powder sample and it expands the possibility of searching for angular momentum-compensated materials.