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Vovk A, Bunyaev SA, Štrichovanec P, Vovk NR, Postolnyi B, Apolinario A, Pardo JÁ, Algarabel PA, Kakazei GN, Araujo JP. Control of Structural and Magnetic Properties of Polycrystalline Co 2FeGe Films via Deposition and Annealing Temperatures. NANOMATERIALS 2021; 11:nano11051229. [PMID: 34066968 PMCID: PMC8148587 DOI: 10.3390/nano11051229] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/25/2021] [Accepted: 05/05/2021] [Indexed: 11/16/2022]
Abstract
Thin polycrystalline Co2FeGe films with composition close to stoichiometry have been fabricated using magnetron co-sputtering technique. Effects of substrate temperature (TS) and post-deposition annealing (Ta) on structure, static and dynamic magnetic properties were systematically studied. It is shown that elevated TS (Ta) promote formation of ordered L21 crystal structure. Variation of TS (Ta) allow modification of magnetic properties in a broad range. Saturation magnetization ~920 emu/cm3 and low magnetization damping parameter α ~ 0.004 were achieved for TS = 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.
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Affiliation(s)
- Andrii Vovk
- Departamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, Portugal; (S.A.B.); (N.R.V.); (B.P.); (A.A.); (G.N.K.); (J.P.A.)
- Correspondence:
| | - Sergey A. Bunyaev
- Departamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, Portugal; (S.A.B.); (N.R.V.); (B.P.); (A.A.); (G.N.K.); (J.P.A.)
| | - Pavel Štrichovanec
- Instituto de Nanociencia y Materiales de Aragón, Campus Río Ebro, Universidad de Zaragoza—CSIC, 50018 Zaragoza, Spain; (P.Š.); (J.Á.P.)
| | - Nikolay R. Vovk
- Departamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, Portugal; (S.A.B.); (N.R.V.); (B.P.); (A.A.); (G.N.K.); (J.P.A.)
| | - Bogdan Postolnyi
- Departamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, Portugal; (S.A.B.); (N.R.V.); (B.P.); (A.A.); (G.N.K.); (J.P.A.)
- Department of Nanoelectronics and Surface Modification, Sumy State University, 40007 Sumy, Ukraine
| | - Arlete Apolinario
- Departamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, Portugal; (S.A.B.); (N.R.V.); (B.P.); (A.A.); (G.N.K.); (J.P.A.)
| | - José Ángel Pardo
- Instituto de Nanociencia y Materiales de Aragón, Campus Río Ebro, Universidad de Zaragoza—CSIC, 50018 Zaragoza, Spain; (P.Š.); (J.Á.P.)
- Departamento de Ciencia y Tecnología de Materiales y Fluidos, Universidad de Zaragoza, 50018 Zaragoza, Spain
| | - Pedro Antonio Algarabel
- Instituto de Nanociencia y Materiales de Aragón, Campus San Francisco, Universidad de Zaragoza—CSIC, 50009 Zaragoza, Spain;
- Departamento de Física de la Materia Condensada, Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Gleb N. Kakazei
- Departamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, Portugal; (S.A.B.); (N.R.V.); (B.P.); (A.A.); (G.N.K.); (J.P.A.)
| | - João Pedro Araujo
- Departamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, Portugal; (S.A.B.); (N.R.V.); (B.P.); (A.A.); (G.N.K.); (J.P.A.)
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