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- W2059073610 abstract "We report ${M}_{4,5}$- and ${L}_{2,3}$-edge x-ray magnetic circular dichroism (XMCD) studies of the ion-specific magnetic polarization on Eu in europium mononitride. The absorption spectra at both edges show a main signal originating from Eu${}^{3+}$ with a well-separated small ($~2%$) contribution from a Eu${}^{2+}$ valence state that we propose is associated with a small concentration of N vacancies. Magnetic polarization is observed in both $4f$ and $5d$ orbitals and for both valence states. The temperature and field dependence of the ${M}_{4,5}$-edge XMCD signal shows a van Vleck signature from Eu${}^{3+}$ (main EuN contribution) and a Brillouin paramagnetic signal from the small concentration of Eu${}^{2+}$ ions. In addition, the ${L}_{2,3}$ edge shows that the Eu${}^{3+}$ ions have $5d$ orbitals that are polarized both by intra-ion $fensuremath{-}d$ exchange and by inter-ionic $d$-$d$ exchange from neighboring Eu${}^{2+}$ ions. There is no evidence of magnetic order among the Eu ions at temperatures as low as 10 K." @default.
- W2059073610 created "2016-06-24" @default.
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- W2059073610 date "2011-05-02" @default.
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- W2059073610 title "Magnetic state of EuN: X-ray magnetic circular dichroism at the Eu<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mi>M</mml:mi><mml:mrow><mml:mn>4</mml:mn><mml:mo>,</mml:mo><mml:mn>5</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>and<mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:msub><mml:mi>L</mml:mi><mml:mrow><mml:mn>2</mml:mn><mml:mo>,</mml:mo><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow…" @default.
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- W2059073610 doi "https://doi.org/10.1103/physrevb.83.174404" @default.
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