Details

Autor(en) / Beteiligte

• Panina, Larissa V.
• Zagorskiy, Dmitri L.
• Shymskaya, Alena
• Doludenko, Ilia M.
• Evstigneeva, Svetlana A.
• Melnikova, Polina D.
• Khairetdinova, Dinara R.
• Lukkareva, Snezchana A.
• Gilimyanova, Anastasiya R.

Titel

1D Nanomaterials in Fe‐Group Metals Obtained by Synthesis in the Pores of Polymer Templates: Correlation of Structure, Magnetic, and Transport Properties

Ist Teil von

• Physica status solidi. A, Applications and materials science, 2022-02, Vol.219 (3), p.n/a

Ort / Verlag

Weinheim: Wiley Subscription Services, Inc

Erscheinungsjahr

2022

Link zum Volltext

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• 1D cylindrical magnetic nanostructures (FeNi, FeCo, FeCoP) of complex topology such as nanowires (NWs), nanotubes (NTs), multilayered nanowires, and core–shell structures are discussed from the perspective of engineering a wide variety of magnetic materials from hard to semihard to soft. Most of recent data are given for the materials synthesized in the pores of polymer ion‐track membranes, which makes it possible to tune systematically the geometrical parameters, morphology, and composition. The key properties including crystal and micromagnetic structure, magnetic anisotropy, and coercivity are analyzed. Co‐based NWs with uniform morphology demonstrate coercivity of more than 10 kOe due to the combination of crystalline and shape anisotropies. In the case of NTs, the demagnetizing effect is reduced owing to a helical arrangement of the magnetization, which leads to low values of coercivity and remanence magnetization. Varying the geometrical parameters of multilayered NWs, the alternating soft and semihard magnetic layers can be made within a single nanowire, which is important for spin‐valve magnetoresistance. Au‐coated ferromagnetic nanostructures are biocompatible and can be used to enhance optical absorption. Ni@Au NTs used as substrates for Raman spectroscopy demonstrate the enhancement factor of the order of 104. Some aspects related to applications of 1D magnets are briefly overviewed. Electrochemical synthesis in pores of track‐etched polymer membranes produces ferromagnetic 1D‐nanostructures of complex topology. They show a wide variety of magnetic properties due to engineered magnetic anisotropy and coercivity. In multilayered nanowires, a sequence of hard and soft magnetic layers is realized which is important for spin‐valve giant magnetoresistance. Au coated Ni‐nanotubes are biocompatible and suitable for optical absorption.