RT Journal Article
T1 Non-conventional resonant behavior of an unconfined magnetic domain wall in a permalloy strip
A1 Fernández García, Laura
A1 Ruiz Gómez, Sandra
A1 Guerrero, Rubén
A1 Guedas, Rodrigo
A1 Aroca, Claudio
A1 Pérez García, Lucas
A1 Prieto, José L.
A1 Muñoz, Manuel
AB The resonant dynamic of a magnetic domain wall in a permalloy microstrip has been investigated using an innovative experimental setup that enables a simultaneous measurement of the ferromagnetic resonance and the magnetoresistance. The resonance frequency associated with the presence of the magnetic domain wall increases linearly with the external magnetic field in the range of fields where the domain wall is present in the microstrip. This linear behavior is unusual in a domain wall and not related to the standard resonant modes of a magnetic domain wall, such as breathing, twisting, or translational modes. The slope of this linear dependency is 1.38 GHz/mT, which is an incredibly large value and allows the detection of very small changes in the external magnetic field. This linear behavior opens a path for developing a highly tunable radio frequency oscillator or a magnetic sensing device where the presence of an external field is detected via small variations in the resonant frequency of the domain wall.
PB AIP Publishing
SN 2166-532X
YR 2024
FD 2024-10-14
LK https://hdl.handle.net/20.500.14352/112005
UL https://hdl.handle.net/20.500.14352/112005
LA eng
NO Laura Fernández-García, Sandra Ruiz-Gómez, Rubén Guerrero, Rodrigo Guedas, Claudio Aroca, Lucas Perez, José L. Prieto, Manuel Muñoz; Non-conventional resonant behavior of an unconfined magnetic domain wall in a permalloy strip. APL Mater. 12 (5) 051116 (2024)
NO Marie Skłodowska-Curie Grant Agreement No. 101061612.
NO Agencia Estatal de Investigación (España)
NO European Commission
NO Ministerio de Ciencia e Innovación (España)
DS Docta Complutense
RD 9 abr 2025