Thickness dependent magnetic properties of ferromagnetic films (Fe, Co) interfaced with Ta

被引：7
作者：
Jafri, Yasmeen [1 ,2 ]
Sharma, Gagan [1 ]
Gupta, Ajay [1 ]
Gupta, Mukul [3 ]
Reddy, V. R. [3 ]
机构：
[1] Amity Univ UP, Amity Ctr Spintron Mat, Sect 125, Noida 201313, India
[2] Amity Univ UP, Amity Inst Appl Sci, Sect 125, Noida 201313, India
[3] UGC DAE Consortium Sci Res, Univ Campus,Khandwa Rd, Indore 452001, India
来源：
THIN SOLID FILMS | 2021年 / 719卷
关键词：
Magnetic anisotropy; Soft X-ray absorption spectroscopy; X-ray reflectivity; Magnetic dead layer; Magneto-optical Kerr effect; Ion beam sputtering; SPIN-TORQUE; THIN-FILMS; MICROSTRUCTURE; ANISOTROPY; SKYRMIONS; TEMPERATURE; ELEMENTS; SURFACE; LAYER;
D O I：
10.1016/j.tsf.2020.138490
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present work, magnetic properties of ferromagnetic films viz. Co and Fe interfaced with Ta have been studied using magneto-optical Kerr effect (MOKE), X-ray reflectivity (XRR) and soft X-ray absorption spectroscopy (SXAS) on wedge shaped samples. Thickness of ferromagnetic film at different points of wedge sample as determined from XRR were employed to study the evolution of magnetic properties with increasing film thickness using MOKE measurements. Co film exhibits a uniaxial magnetic anisotropy on Ta which varies as a function of increasing film thickness, while no thickness dependent magnetic anisotropy has been observed for Fe film grown on Ta. The variation of coercivity with increasing film thickness is in agreement with the observed variation of magnetic anisotropy. SXAS measurements qualitatively support alloying / intermixing at interface. Thicknesses of interfacial magnetic dead layer as seen from variation of Kerr intensity with film thickness is relatively higher for Co as compared to Fe, while interfaced with Ta.
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页数：7
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