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44 papers
Magnetic Circular Dichroism at the Oxygen K edge in Microcrystals of Spinels Grown on Ru(0001)
A. Mandziak, V. Sosa, P. Nita +10
We have measured the circular magnetic dichroism in the x-ray absorption at the K-edge of oxygen in microcrystals of different spinel oxides. The microcrystals are islands of micro…
Study of the magnetoelastic effect in nickel and cobalt thin films at GHz range using X-ray microscopy
Marc Rovirola, Muhammad Waqas Khaliq, Travis Gustafson +9
We use surface acoustic waves of 1 and 3 GHz in hybrid piezoelectric-magnetic systems with either cobalt or nickel as a magnetic layer to generate magnetoacoustic waves and directl…
A Platform for Addressing Individual Magnetite Islands Grown Epitaxially on Ru(0001) and Manipulating Their Magnetic Domains
Sandra Ruiz-Gómez, Eva María Trapero, Claudia Fernández-González +8
We have grown high-quality magnetite micrometric islands on ruthenium stripes on sapphire through a combination of magnetron sputtering (Ru film), high-temperature molecular beam e…
Tuning the Néel temperature in an antiferromagnet: the case of NixCo1-xO microstructures
Anna Mandziak, Guiomar D. Soria, José Emilio Prieto +6
We show that it is possible to tune the Néel temperature of nickel(II)-cobalt(II) oxide films by changing the Ni to Co ratio. We grow single crystalline micrometric triangular isla…
Magneto-Acoustic Waves in antiferromagnetic CuMnAs excited by Surface Acoustic Waves
M. Waqas Khaliq, Oliver Amin, Alberto Hernández-Mínguez +15
Magnetoelastic effects in antiferromagnetic CuMnAs are investigated by applying dynamic strain in the 0.01% range through surface acoustic waves in the GaAs substrate. The magnetic…
GHz sample excitation at the ALBA-PEEM
Muhammad Waqas Khaliq, José M. Álvarez, Antonio Camps +9
We describe a setup that is used for high-frequency electrical sample excitation in a cathode lens electron microscope with the sample stage at high voltage as used in many synchro…