Influence of Pt Ultrathin Interlayers on Magnetic Anisotropy in Ni/NiO Multilayers

被引：0
|
作者：
Anyfantis, Dimitrios I. [1 ]
Barnasas, Alexandros [1 ]
Diamantopoulos, Nikolaos C. [1 ]
Tsakiris, Constantinos M. [1 ]
Schmidt, Georg [2 ,3 ]
Papaioannou, Evangelos Th. [2 ,4 ]
Poulopoulos, Panagiotis [1 ]
机构：
[1] Univ Patras, Sch Nat Sci, Dept Mat Sci, Patras 26504, Greece
[2] Martin Luther Univ Halle Wittenberg, Inst Phys, Von Danckelmann Pl 3, D-06120 Halle, Germany
[3] Martin Luther Univ Halle Wittenberg, Interdisziplinares Zentrum Mat wissensch, Nanotech Weinberg, Heinrich Damerow Str 4, D-06120 Halle, Germany
[4] Aristotle Univ Thessaloniki, Dept Phys, Thessaloniki 54124, Greece
来源：
MICRO-SWITZERLAND | 2024年 / 4卷 / 01期
关键词：
magnetic multilayers; magnetic anisotropy; growth; sputtering; transition metal oxides; Ni; NiO; Pt; DOMAIN-STRUCTURES; ROOM-TEMPERATURE; FILMS; ELECTRONICS; CO;
D O I：
10.3390/micro4010011
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Perpendicular magnetic anisotropy at transition metal/oxide interfaces plays a significant role in technological applications such as magnetic storage and spintronics. In this study, we investigate the effects of thermal annealing and Pt ultrathin interlayers on the magnetic anisotropy in Ni/NiO multilayers. Ni/NiO/Pt multilayers were fabricated via radiofrequency magnetron sputtering and natural oxidation. The static magnetic properties of the samples were studied using temperature-dependent SQUID magnetometry. We focus on a sample with a Nickel thickness of 6.7 nm in each multilayer period. This multilayer in Ni/NiO form showed the maximum enhancement of perpendicular magnetic anisotropy after mild thermal annealing in past work. In this work, we study the effects of ultrathin Pt interlayers on the magnetic properties of such a Ni/NiO multilayer before and after annealing. We have observed a further increase in perpendicular magnetic anisotropy, and we study the temperature-dependent magnetic properties of this system, which combines the favorable magnetic properties of Ni/Pt and Ni/NiO multilayers.
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页码：157 / 169
页数：13
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