Giant damping enhancement induced by exchange coupling in Y3Fe5O12/Co2FeAl0.5Si0.5 bilayers

Giant damping enhancement induced by exchange coupling in Y3Fe5O12/Co2FeAl0.5Si0.5 bilayers
复制标题

Y3Fe5O12/Co2FeAl0.5Si0.5 双层中交换耦合引起的巨阻尼增强

DOI:
10.1016/j.jallcom.2018.07.142
复制
发表时间:
2018-10
影响因子:
6.2
通讯作者:
Jin Lichuan
Jin Lichuan
中科院分区:
材料科学2区
文献类型:
--
作者:
Li Mingming;Zhang Huaiwu;Rao Y. H.;Hong Caiyun;Zhong Zhiyong;Yang Qinghui;Tang Xiaoli;Jin Lichuan

文献摘要

参考文献

被引文献

相似文献

研究了Y3 Fe 5 O 12(YIG)/重金属双层膜中自旋泵效应引起的吉尔伯特阻尼增强. Co2FeAl0.5Si0.5(CFAS)由于其高自旋极化率和低吉尔伯特阻尼,被认为是自旋电子学器件中很有前途的铁磁材料。我们研究了微波动态磁化在YIG/CFAS双层膜结合铁磁共振测量使用矢量网络分析仪,揭示了5倍的巨阻尼增强相比,为YIG/Pt双层膜。这种现象是由交换耦合效应和自旋泵浦效应共同作用的结果。通过插入10 nm的Cu间隔物,可以抑制直接交换耦合。通过自旋抽运获得了7.75× 1018 m− 2的自旋混合电导geff ↑↓。该研究提供了一种有效的方法来定制磁性薄膜的阻尼。
Gilbert damping enhancement induced by the spin pumping effect is investigated in Y 3 Fe 5 O 12 (YIG)/heavy metal bilayers. Because its spin polarization is high and Gilbert damping is low, Co 2 FeAl 0.5 Si 0.5 (CFAS) is deemed a promising ferromagnetic material in spintronics devices. We studied microwave dynamic magnetizations in YIG/CFAS bilayers combined with ferromagnetic resonance measurement using a vector network analyzer to reveal a 5-fold giant damping enhancement compared with that for the YIG/Pt bilayers. This phenomenon was attributed to both the exchange coupling effect and spin pumping effect. By inserting a 10-nm Cu spacer, direct exchange coupling can be suppressed. A spin mixing conductance g e f f↑↓ of 7.75× 10 18 m− 2 generated by spin pumping was obtained. The study provides an effective approach to tailor the damping in magnetic thin films.
DOI: 10.1039/c7nr04431c
发表时间: 2017
期刊: Nanoscale
影响因子: 6.7
作者:
Wang Jing;Huang Qikun;Shi Peng;Zhang Kun;Tian Yufeng;Yan Shishen;Chen Yanxue;Liu Guotei;Kang Shishou;Mei Liangmo
通讯作者: Mei Liangmo
超低电流密度和无偏置场自旋转移纳米振荡器
DOI: 10.1038/srep01426
发表时间: 2013
期刊: SCIENTIFIC REPORTS
影响因子: 4.6
作者:
Zeng, Zhongming;Finocchio, Giovanni;Zhang, Baoshun;Amiri, Pedram Khalili;Katine, Jordan A.;Krivorotov, Ilya N.;Huai, Yiming;Langer, Juergen;Azzerboni, Bruno;Wang, Kang L.;Jiang, Hongwen
通讯作者: Jiang, Hongwen
DOI: 10.1103/physrevb.88.100406
发表时间: 2013-07
期刊: Physical Review B
影响因子: 3.7
作者:
Hailong Wang;C. Du;Yong Pu;R. Adur;P. Hammel;Fengyuan Yang
通讯作者: Hailong Wang;C. Du;Yong Pu;R. Adur;P. Hammel;Fengyuan Yang
DOI: 10.1103/physrevlett.106.036601
发表时间: 2011-01-20
影响因子: 8.6
作者:
Liu, Luqiao;Moriyama, Takahiro;Buhrman, R. A.
通讯作者: Buhrman, R. A.
DOI: 10.1063/1.4813315
发表时间: 2013-07-08
影响因子: 4
作者:
Jungfleisch, M. B.;Lauer, V.;Hillebrands, B.
通讯作者: Hillebrands, B.