Details

Autor(en) / Beteiligte

• Nguyen, Thi Ngoc Anh
• Kasiuk, Julia
• Wu, Wen-Bin
• Fedotova, Julia
• Przewoźnik, Janusz
• Kapusta, Czesław
• Kupreeva, Olga
• Lazarouk, Serguei
• Cao, Thi Thanh Hai
• Nguyen, Thi Thanh Thuy
• Dinh, Hung Manh
• Do, Khanh Tung
• Nguyen, Thanh Huong
• Vu, Hong Ky
• Vu, Dinh Lam
• Åkerman, Johan

Titel

Correlation of magnetic and magnetoresistive properties of nanoporous Co/Pd thin multilayers fabricated on anodized TiO2 templates

Ist Teil von

• Scientific reports, 2020-07, Vol.10 (1), p.10838-10838, Article 10838

Ort / Verlag

London: Nature Publishing Group

Erscheinungsjahr

2020

Quelle

Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals

Beschreibungen/Notizen

• Abstract In this study, we consider a technological approach to obtain a high perpendicular magnetic anisotropy of the Co/Pd multilayers deposited on nanoporous TiO 2 templates of different types of surface morphology. It is found that the use of templates with homogeneous and smoothed surface relief, formed on silicon wafers, ensures conservation of perpendicular anisotropy of the deposited films inherent in the continuous multilayers. Also, their magnetic hardening with doubling of the coercive field is observed. However, inhomogeneous magnetic ordering is revealed in the porous films due to the occurrence of magnetically soft regions near the pore edges and/or inside the pores. Modeling of the field dependences of magnetization and electrical resistance indicates that coherent rotation is the dominant mechanism of magnetization reversal in the porous system instead of the domain-wall motion typical of the continuous multilayers, while their magnetoresistance is determined by electron-magnon scattering, similarly to the continuous counterpart. The preservation of spin waves in the porous films indicates a high uniformity of the magnetic ordering in the fabricated porous systems due to a sufficiently regular pores array introduced into the films, despite the existence of soft-magnetic regions. The results are promising for the design and fabrication of future spintronic devices.