Heusler alloys for spintronic devices: review on recent development and future perspectives.
Heusler alloys for spintronic devices: review on recent development and future perspectives.
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DOI：
10.1080/14686996.2020.1812364
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发表时间：
2021-03-29
影响因子：
5.5
通讯作者：
Hirohata A
中科院分区：
文献类型：
--
作者：
Elphick K;Frost W;Samiepour M;Kubota T;Takanashi K;Sukegawa H;Mitani S;Hirohata A
Heusler合金理论上预测在室温（RT）下变成半金属。使用这些合金的优点是与主要衬底良好的晶格匹配、高于RT的高居里温度以及在费米能级处自旋态密度的金属间可控性。根据晶体结构的不同，合金分为半赫斯勒合金和全赫斯勒合金，每种合金都在实验和理论上进行了讨论。介绍了铁磁Heusler合金的基本性质。原子尺度上的结构和磁性表征通常进行，以证明在RT的半金属性。在薄膜中的原子有序直接观察到的X射线衍射，也间接探测通过电阻率的温度依赖性。元素特定的磁矩和自旋极化的Heusler合金薄膜直接测量使用X射线磁圆二色性和Andreev反射，分别。通过在自旋电子器件中采用这些铁磁合金薄膜，有效的自旋注入到非磁性材料和大的磁阻进行了讨论。反铁磁Heusler合金的基本性质，然后描述。在原子尺度上的结构和磁性表征。Heusler合金薄膜中的原子有序性通过电阻率的温度依赖性间接测量。反铁磁组态直接成像的X射线磁线性二向色性和极化中子反射。并对反铁磁Heusler合金薄膜的应用作了说明。列出了其他非磁性Heusler合金。在本审查的最后提供了一个简短的摘要。
Heusler alloys are theoretically predicted to become half-metals at room temperature (RT). The advantages of using these alloys are good lattice matching with major substrates, high Curie temperature above RT and intermetallic controllability for spin density of states at the Fermi energy level. The alloys are categorised into half- and full-Heusler alloys depending upon the crystalline structures, each being discussed both experimentally and theoretically. Fundamental properties of ferromagnetic Heusler alloys are described. Both structural and magnetic characterisations on an atomic scale are typically carried out in order to prove the half-metallicity at RT. Atomic ordering in the films is directly observed by X-ray diffraction and is also indirectly probed via the temperature dependence of electrical resistivity. Element specific magnetic moments and spin polarisation of the Heusler alloy films are directly measured using X-ray magnetic circular dichroism and Andreev reflection, respectively. By employing these ferromagnetic alloy films in a spintronic device, efficient spin injection into a non-magnetic material and large magnetoresistance are also discussed. Fundamental properties of antiferromagnetic Heusler alloys are then described. Both structural and magnetic characterisations on an atomic scale are shown. Atomic ordering in the Heusler alloy films is indirectly measured by the temperature dependence of electrical resistivity. Antiferromagnetic configurations are directly imaged by X-ray magnetic linear dichroism and polarised neutron reflection. The applications of the antiferromagnetic Heusler alloy films are also explained. The other non-magnetic Heusler alloys are listed. A brief summary is provided at the end of this review.
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影响因子：
3.7
作者：
Barman, C. K.;Alam, Aftab
通讯作者：
Alam, Aftab
影响因子：
3.4
作者：
BROOKS, JS;WILLIAMS, JM;WEBSTER, PJ
通讯作者：
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影响因子：
2.1
作者：
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通讯作者：
Hirohata, Atsufumi
影响因子：
3.2
作者：
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通讯作者：
Arenholz, Elke
影响因子：
2.4
作者：
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通讯作者：
Jung, Myung-Hwa