High-pressure tuning of valence and magnetic interactions in EuYbGa
Physical Review B—Condensed Matter and Materials Physics, 2012•APS
Pressure-induced changes in valence and magnetic ordering are observed in a Eu 0.5 Yb
0.5 Ga 4 compound by means of element selective x-ray absorption spectroscopy at Eu and
Yb L 3 edges. Concomitant Eu and Yb valence transitions towards a 3+ state, together with
an antiferromagnetic to ferromagnetic transition, are observed with applied pressures up to
30 GPa. With the support of density functional theory calculations, we argue that
hybridization between (Eu/Yb)-5 d and Ga orbitals regulates the valence and magnetic …
0.5 Ga 4 compound by means of element selective x-ray absorption spectroscopy at Eu and
Yb L 3 edges. Concomitant Eu and Yb valence transitions towards a 3+ state, together with
an antiferromagnetic to ferromagnetic transition, are observed with applied pressures up to
30 GPa. With the support of density functional theory calculations, we argue that
hybridization between (Eu/Yb)-5 d and Ga orbitals regulates the valence and magnetic …
Pressure-induced changes in valence and magnetic ordering are observed in a EuYbGa compound by means of element selective x-ray absorption spectroscopy at Eu and Yb edges. Concomitant Eu and Yb valence transitions towards a state, together with an antiferromagnetic to ferromagnetic transition, are observed with applied pressures up to 30 GPa. With the support of density functional theory calculations, we argue that hybridization between (Eu/Yb)-5 and Ga orbitals regulates the valence and magnetic exchange interactions in this system.
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