3 papers
cond-mat.mtrl-sci2022
Magnetization of Zn1-xCoxO nanoparticles: single-ion anisotropy and spin clustering
X. Gratens, B. de Abreu Silva, M. I. B. Bernardi +3
The magnetization of Zn1-xCoxO (0.0055 < x < 0.073) nanoparticles has been measured as a function of temperature T (1.7 K < T , 10 K) and for magnetic field up to 65 kOe using a SQ…
cond-mat.mtrl-sci2019
Converting Faraday rotation into magnetization in europium chalcogenides
S. C. P. van Kooten, P. A. Usachev, X. Gratens +4
We present a simple semiclassical model to sustain that in europium chalcogenides (EuX), Faraday rotation (FR) in the transparency gap is proportional to the magnetization of the s…
cond-mat.mtrl-sci2018
Ultrafast light switching of ferromagnetism in EuSe
A. B. Henriques, X. Gratens, P. A. Usachev +2
We demonstrate that light resonant with the bandgap forces the antiferromagnetic semiconducor EuSe to enter ferromagnetic alignment in the picosecond time scale. A photon generates…