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Article

The Effect of Heat Treatment on the Microstructure and Mechanical Properties of 2D Nanostructured Au/NiFe System

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Laboratory of Magnetic Films Physics, Scientific-Practical Materials Research Centre of National Academy of Sciences of Belarus, 220072 Minsk, Belarus
2
Laboratory of Single Crystal Growth, South Ural State University, 454080 Chelyabinsk, Russia
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The Institute of Nuclear Physics, Almaty 050032, Kazakhstan
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Engineering Profile Laboratory, L.N. Gumilyov Eurasian National University, Nur-Sultan 010008, Kazakhstan
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Department of Intelligent Information Technologies, Ural Federal University named after the First President of Russia B.N. Yeltsin, 620075 Yekaterinburg, Russia
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SEC “Nanotechnology”, Moscow Institute of Physics and Technology (State University), 141701 Dolgoprudny, Russia
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Department of Physics, Federal University of Ceara, 60-455-970 Fortaleza, Brazil
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Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
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Department of Physics, Electronics and Space Science, Gujarat University, Ahmedabad 380009, India
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School of Electronics and Electrical Engineering, Lovely Professional University, Phagwara 144411, India
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Department of Technology of Electronics Materials, National University of Science and Technology MISiS, Leninsky Prospekt, 4, 119049 Moscow, Russia
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(6), 1077; https://doi.org/10.3390/nano10061077
Received: 3 May 2020 / Revised: 20 May 2020 / Accepted: 27 May 2020 / Published: 31 May 2020
(This article belongs to the Special Issue Bimetallic Nanoparticles)
Nanostructured NiFe film was obtained on silicon with a thin gold sublayer via pulsed electrodeposition and annealed at a temperature from 100 to 400 °C in order to study the effect of heat treatment on the surface microstructure and mechanical properties. High-resolution atomic force microscopy made it possible to trace stepwise evolving microstructure under the influence of heat treatment. It was found that NiFe film grains undergo coalescence twice—at ~100 and ~300 °C—in the process of a gradual increase in grain size. The mechanical properties of the Au/NiFe nanostructured system have been investigated by nanoindentation at two various indentation depths, 10 and 50 nm. The results showed the opposite effect of heat treatment on the mechanical properties in the near-surface layer and in the material volume. Surface homogenization in combination with oxidation activation leads to abnormal strengthening and hardening-up of the near-surface layer. At the same time, a nonlinear decrease in hardness and Young’s modulus with increasing temperature of heat treatment characterizes the internal volume of nanostructured NiFe. An explanation of this phenomenon was found in the complex effect of changing the ratio of grain volume/grain boundaries and increasing the concentration of thermally activated diffuse gold atoms from the sublayer to the NiFe film. View Full-Text
Keywords: pulsed electrodeposition; multilayer system; NiFe nanograins; heat treatment; surface microstructure; nanohardness; Young’s modulus; elastoplastic deformation pulsed electrodeposition; multilayer system; NiFe nanograins; heat treatment; surface microstructure; nanohardness; Young’s modulus; elastoplastic deformation
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MDPI and ACS Style

Zubar, T.; Fedosyuk, V.; Tishkevich, D.; Kanafyev, O.; Astapovich, K.; Kozlovskiy, A.; Zdorovets, M.; Vinnik, D.; Gudkova, S.; Kaniukov, E.; Sombra, A.S.B.; Zhou, D.; Jotania, R.B.; Singh, C.; Trukhanov, S.; Trukhanov, A. The Effect of Heat Treatment on the Microstructure and Mechanical Properties of 2D Nanostructured Au/NiFe System. Nanomaterials 2020, 10, 1077. https://doi.org/10.3390/nano10061077

AMA Style

Zubar T, Fedosyuk V, Tishkevich D, Kanafyev O, Astapovich K, Kozlovskiy A, Zdorovets M, Vinnik D, Gudkova S, Kaniukov E, Sombra ASB, Zhou D, Jotania RB, Singh C, Trukhanov S, Trukhanov A. The Effect of Heat Treatment on the Microstructure and Mechanical Properties of 2D Nanostructured Au/NiFe System. Nanomaterials. 2020; 10(6):1077. https://doi.org/10.3390/nano10061077

Chicago/Turabian Style

Zubar, Tatiana, Valery Fedosyuk, Daria Tishkevich, Oleg Kanafyev, Ksenia Astapovich, Artem Kozlovskiy, Maxim Zdorovets, Denis Vinnik, Svetlana Gudkova, Egor Kaniukov, Antonio S.B. Sombra, Di Zhou, Rajshree B. Jotania, Charanjeet Singh, Sergei Trukhanov, and Alex Trukhanov. 2020. "The Effect of Heat Treatment on the Microstructure and Mechanical Properties of 2D Nanostructured Au/NiFe System" Nanomaterials 10, no. 6: 1077. https://doi.org/10.3390/nano10061077

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