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Electron microscopy of nanostructures formed by Cu‒Ni layer nanowires

Keywords:

O.M. Zhigalina ‒ Dr.Sc. (Phys.-Math.), Associate Professor, Leading Research Scientist, Shubnikov Institute of Crystallography, Federal Scientific Research Centre «Crystallography and Photonics», RAS (Moscow)
E-mail: zhigal@ns.crys.ras.ru
D.N. Khmelenin ‒ Ph.D. (Phys.- Math.), Research Scientist, Shubnikov Institute of Crystallography, Federal Scientific Research Centre «Crystallography and Photonics», RAS (Moscow)
E-mail: khmelenin@ns.crys.ras.ru
I.M. Ivanov ‒ Student, Bauman Moscow State Technical University
E-mail: ivan.ivanov1904@yandex.ru
D.L. Zagorskiy ‒ Ph.D. (Phys.-Math.), Associate Professor, Leading Research Scientist, Shubnikov Institute of Crystallography, Federal Scientific Research Centre «Crystallography and Photonics», RAS (Moscow)
E-mail: dzagorskiy@gmail.com
S.A. Bedin ‒ Ph.D. (Chem.), Engineer, Shubnikov Institute of Crystallography, Federal Scientific Research Centre «Crystallography and Photonics», RAS (Moscow)
E-mail: bserg5@gmail.com
I.M. Doludenko ‒ Post-graduate Student, National Research University Higher School of Economics (Moscow)
E-mail: doludenko.i@yandex.ru


The structure of nanowires (NP) consisting of alternating non-magnetic and ferromagnetic layers of copper-nickel has been studied by electron microscopy. NP with a diameter of 100 nm, obtained by matrix synthesis during galvanic deposition of metals in the pores of track membranes used as a template material. The number of pairs of copper-nickel layers for different samples was 10, 20, and 50. It is shown that alternating layers of Ni/Cu metals with a FCC lattice with 50…400 nm of thickness can be arbitrarily oriented to the nanowire axis. It has been established that the metallic phases in NP present relatively large grains up to 100 nm in size, and Cu2O/CuO oxide phases have smaller sizes – 5…20 nm. Energy-dispersion analysis showed that in the structure of NP, copper layers consist mainly of copper, and nickel is practically absent. On the contrary, copper is present in the nickel layers, the content of which can reach 20 %.

References:
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  5. Doludenko I.M., Bondarenko G.G., Zagorskij D.L., Bedin S.A. Primenenie trekovyh matrits dlya polucheniya geterostruktur-nyh nanoprovolok Ni/Cu // Trudy XXVII Mezhdunar. konf. «Radiatsionnaya fizika tverdogo tela» (Sevastopol', 10‒15 iyulya 2017 g.). M.: FGBNU «NII PMT». 2017. S. 64‒67.
June 24, 2020
May 29, 2020

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