Control of Structural and Magnetic Properties of Polycrystalline Co<sub>2</sub>FeGe Films via Deposition and Annealing Temperatures
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
Affiliations
Andrii Vovk
Departamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, Portugal
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
Pavel Štrichovanec
Instituto de Nanociencia y Materiales de Aragón, Campus Río Ebro, Universidad de Zaragoza—CSIC, 50018 Zaragoza, Spain
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
Bogdan Postolnyi
Departamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, Portugal
Arlete Apolinario
Departamento de Física e Astronomia, Institute of Physics for Advanced Materials, Nanotechnology and Photonics (IFIMUP), Universidade do Porto, 4169-007 Porto, Portugal
José Ángel Pardo
Instituto de Nanociencia y Materiales de Aragón, Campus Río Ebro, Universidad de Zaragoza—CSIC, 50018 Zaragoza, Spain
Pedro Antonio Algarabel
Instituto de Nanociencia y Materiales de Aragón, Campus San Francisco, Universidad de Zaragoza—CSIC, 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
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
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.
