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Large Interfacial Magnetostriction in (Co/Ni)4/Pb(Mg1/3Nb2/3)O3–PbTiO3 Multiferroic Heterostructures
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-07-04 00:00:00 , DOI: 10.1021/acsami.8b06249
Daniel B. Gopman 1 , Peijie Chen 1 , June W. Lau 1 , Andres C. Chavez 2 , Gregory P. Carman 2 , Peter Finkel 3 , Margo Staruch 3 , Robert D. Shull 1
Affiliation  

The magnetoelastic behavior of multiferroic heterostructures—coupling of magnetic anisotropy or domain dynamics to structural deformations—has been intensively studied for developing materials for energy-efficient, spin-based applications. Here, we report on a large, interface-dominated magnetostriction in (Co/Ni)4/Pb(Mg1/3Nb2/3)O3–PbTiO3 multiferroic heterostructures. Ferromagnetic resonance spectroscopy under voltage-induced strains enabled estimation of the saturation magnetostriction as a function of Ni thickness. The volume and the interface components to the saturation magnetostriction are (6.6 ± 0.9) × 10–6 and (−2.2 ± 0.2) × 10–14 m, respectively. Similar to perpendicular magnetic anisotropy in Co/Ni, the large, negative magnetostriction originates from the Co/Ni interfaces. This interfacial functionality delivers an effect over 300% larger than the bulk contribution and can enable low-energy, nanoelectronic devices that combine the tunable magnetic and magnetostrictive properties of Co/Ni multilayers with the ferroelectric properties of Pb(Mg1/3Nb2/3)O3–PbTiO3.

中文翻译:

(Co / Ni)4 / Pb(Mg 1/3 Nb 2/3)O 3 –PbTiO 3大铁磁异质结构中的大界面磁致伸缩

多铁性异质结构的磁弹性行为(磁各向异性或畴动力学与结构变形的耦合)已被广泛研究用于开发节能的,基于自旋的应用材料。在这里,我们报道了在(Co / Ni)4 / Pb(Mg 1/3 Nb 2/3)O 3 -PbTiO 3多铁性异质结构中以界面为主的大磁致伸缩。在电压引起的应变下的铁磁共振光谱使得能够估计饱和磁致伸缩与Ni厚度的函数关系。饱和磁致伸缩的体积和界面分量为(6.6±0.9)×10 –6和(−2.2±0.2)×10 –14米,分别。类似于Co / Ni中的垂直磁各向异性,大的负磁致伸缩源自Co / Ni界面。这种界面功能所产生的效果比体积贡献大300%以上,并且可以实现将Co / Ni多层膜的可调磁和磁致伸缩性能与Pb(Mg 1/3 Nb 2 / 3)O 3 -PbTiO 3
更新日期:2018-07-04
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