Spin wave propagation along a ferrimagnetic strip with out-of-plane magnetization is studied by means of micromagnetic simulations. The ferrimagnetic material is considered to be formed by two antiferromagnetically coupled sub-lattices. Two critical temperatures can be defined for such systems: that of magnetization compensation and that of angular momentum compensation, both different due to distinct Landé factors for each sub-lattice. Spin waves in the strip are excited by a spin current injected at one of its edges. The obtained dispersion diagrams show exchange-dominated forward volume spin waves. For a given excitation frequency, the Néel vector describes highly eccentric orbits, the eccentricity depending on temperature, whose semi-major axis is oriented differently at distinct locations on the FiM strip.
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19 August 2024
Research Article|
August 19 2024
Spin waves in ferrimagnets near the angular magnetization compensation temperature: A micromagnetic study
Special Collection:
Magnonics
Luis Sánchez-Tejerina
;
Luis Sánchez-Tejerina
a)
(Conceptualization, Data curation, Formal analysis, Investigation, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
Department of Electricity and Electronics, University of Valladolid
, Valladolid, Spain
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David Osuna Ruiz
;
David Osuna Ruiz
b)
(Conceptualization, Data curation, Investigation, Methodology, Supervision, Visualization, Writing – original draft, Writing – review & editing)
2
Departament of Electrical, Electronical and Communications Engineering, Public University of Navarra
, Pamplona, Spain
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Eduardo Martínez
;
Eduardo Martínez
c)
(Project administration, Supervision, Validation, Writing – review & editing)
3
Department of Applied Physics, University of Salamanca
, Salamanca, Spain
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Luis López Díaz
;
Luis López Díaz
d)
(Conceptualization, Data curation, Methodology, Project administration, Supervision, Validation, Writing – review & editing)
3
Department of Applied Physics, University of Salamanca
, Salamanca, Spain
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Víctor Raposo
;
Víctor Raposo
e)
(Software)
3
Department of Applied Physics, University of Salamanca
, Salamanca, Spain
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Óscar Alejos
Óscar Alejos
f)
(Data curation, Formal analysis, Investigation, Project administration, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
Department of Electricity and Electronics, University of Valladolid
, Valladolid, Spain
f)Author to whom correspondence should be addressed: [email protected]
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f)Author to whom correspondence should be addressed: [email protected]
a)
Electronic mail: [email protected]
b)
Electronic mail: [email protected]
c)
Electronic mail: [email protected]
d)
Electronic mail: [email protected]
e)
Electronic mail: [email protected]
Appl. Phys. Lett. 125, 082402 (2024)
Article history
Received:
November 30 2023
Accepted:
August 08 2024
Citation
Luis Sánchez-Tejerina, David Osuna Ruiz, Eduardo Martínez, Luis López Díaz, Víctor Raposo, Óscar Alejos; Spin waves in ferrimagnets near the angular magnetization compensation temperature: A micromagnetic study. Appl. Phys. Lett. 19 August 2024; 125 (8): 082402. https://doi.org/10.1063/5.0189745
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