Control of Structural and Magnetic Properties of Polycrystalline Co<sub>2</sub>FeGe Films via Deposition and Annealing Temperatures

Control of Structural and Magnetic Properties of Polycrystalline Co<sub>2</sub>FeGe Films via Deposition and Annealing Temperatures

Thin polycrystalline Co<sub>2</sub>FeGe films with composition close to stoichiometry have been fabricated using magnetron co-sputtering technique. Effects of substrate temperature (T<sub>S</sub>) and post-deposition annealing (T<sub>a</sub>) on structure, static...

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Main Authors: Andrii Vovk, Sergey A. Bunyaev, Pavel Štrichovanec, Nikolay R. Vovk, Bogdan Postolnyi, Arlete Apolinario, José Ángel Pardo, Pedro Antonio Algarabel, Gleb N. Kakazei, João Pedro Araujo
Format: Article
Language:English
Published: MDPI AG 2021-05-01
Series:Nanomaterials
Subjects:
thin films
Heusler alloys
magnetostatic properties
Ferromagnetic resonance
Online Access:https://www.mdpi.com/2079-4991/11/5/1229
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spelling doaj-5c5c72b931b14d8c94561c41b3d4c6192021-05-31T23:22:24ZengMDPI AGNanomaterials2079-49912021-05-01111229122910.3390/nano11051229Control of Structural and Magnetic Properties of Polycrystalline Co<sub>2</sub>FeGe Films via Deposition and Annealing TemperaturesAndrii Vovk0Sergey A. Bunyaev1Pavel Štrichovanec2Nikolay R. Vovk3Bogdan Postolnyi4Arlete Apolinario5José Ángel Pardo6Pedro Antonio Algarabel7Gleb N. Kakazei8João Pedro Araujo9Departamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, PortugalDepartamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, PortugalInstituto de Nanociencia y Materiales de Aragón, Campus Río Ebro, Universidad de Zaragoza—CSIC, 50018 Zaragoza, SpainDepartamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, PortugalDepartamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, PortugalDepartamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, PortugalInstituto de Nanociencia y Materiales de Aragón, Campus Río Ebro, Universidad de Zaragoza—CSIC, 50018 Zaragoza, SpainInstituto de Nanociencia y Materiales de Aragón, Campus San Francisco, Universidad de Zaragoza—CSIC, 50009 Zaragoza, SpainDepartamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, PortugalDepartamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, PortugalThin polycrystalline Co<sub>2</sub>FeGe films with composition close to stoichiometry have been fabricated using magnetron co-sputtering technique. Effects of substrate temperature (T<sub>S</sub>) and post-deposition annealing (T<sub>a</sub>) on structure, static and dynamic magnetic properties were systematically studied. It is shown that elevated T<sub>S</sub> (T<sub>a</sub>) promote formation of ordered L2<sub>1</sub> crystal structure. Variation of T<sub>S</sub> (T<sub>a</sub>) allow modification of magnetic properties in a broad range. Saturation magnetization ~920 emu/cm<sup>3</sup> and low magnetization damping parameter α ~ 0.004 were achieved for T<sub>S</sub> = 573 K. This in combination with soft ferromagnetic properties (coercivity below 6 Oe) makes the films attractive candidates for spin-transfer torque and magnonic devices.https://www.mdpi.com/2079-4991/11/5/1229thin filmsHeusler alloysmagnetostatic propertiesFerromagnetic resonance
collection DOAJ
language English
format Article
sources DOAJ
author Andrii Vovk
Sergey A. Bunyaev
Pavel Štrichovanec
Nikolay R. Vovk
Bogdan Postolnyi
Arlete Apolinario
José Ángel Pardo
Pedro Antonio Algarabel
Gleb N. Kakazei
João Pedro Araujo
spellingShingle Andrii Vovk
Sergey A. Bunyaev
Pavel Štrichovanec
Nikolay R. Vovk
Bogdan Postolnyi
Arlete Apolinario
José Ángel Pardo
Pedro Antonio Algarabel
Gleb N. Kakazei
João Pedro Araujo
Control of Structural and Magnetic Properties of Polycrystalline Co<sub>2</sub>FeGe Films via Deposition and Annealing Temperatures
Nanomaterials
thin films
Heusler alloys
magnetostatic properties
Ferromagnetic resonance
author_facet Andrii Vovk
Sergey A. Bunyaev
Pavel Štrichovanec
Nikolay R. Vovk
Bogdan Postolnyi
Arlete Apolinario
José Ángel Pardo
Pedro Antonio Algarabel
Gleb N. Kakazei
João Pedro Araujo
author_sort Andrii Vovk
title Control of Structural and Magnetic Properties of Polycrystalline Co<sub>2</sub>FeGe Films via Deposition and Annealing Temperatures
title_short Control of Structural and Magnetic Properties of Polycrystalline Co<sub>2</sub>FeGe Films via Deposition and Annealing Temperatures
title_full Control of Structural and Magnetic Properties of Polycrystalline Co<sub>2</sub>FeGe Films via Deposition and Annealing Temperatures
title_fullStr Control of Structural and Magnetic Properties of Polycrystalline Co<sub>2</sub>FeGe Films via Deposition and Annealing Temperatures
title_full_unstemmed Control of Structural and Magnetic Properties of Polycrystalline Co<sub>2</sub>FeGe Films via Deposition and Annealing Temperatures
title_sort control of structural and magnetic properties of polycrystalline co<sub>2</sub>fege films via deposition and annealing temperatures
publisher MDPI AG
series Nanomaterials
issn 2079-4991
publishDate 2021-05-01
description Thin polycrystalline Co<sub>2</sub>FeGe films with composition close to stoichiometry have been fabricated using magnetron co-sputtering technique. Effects of substrate temperature (T<sub>S</sub>) and post-deposition annealing (T<sub>a</sub>) on structure, static and dynamic magnetic properties were systematically studied. It is shown that elevated T<sub>S</sub> (T<sub>a</sub>) promote formation of ordered L2<sub>1</sub> crystal structure. Variation of T<sub>S</sub> (T<sub>a</sub>) allow modification of magnetic properties in a broad range. Saturation magnetization ~920 emu/cm<sup>3</sup> and low magnetization damping parameter α ~ 0.004 were achieved for T<sub>S</sub> = 573 K. This in combination with soft ferromagnetic properties (coercivity below 6 Oe) makes the films attractive candidates for spin-transfer torque and magnonic devices.
topic thin films
Heusler alloys
magnetostatic properties
Ferromagnetic resonance
url https://www.mdpi.com/2079-4991/11/5/1229
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