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26 April 2024

» arxiv » 1306.5477

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Europium nitride: A novel diluted magnetic semiconductor
Do Le Binh ; B.J. Ruck ; F. Natali ; H. Warring ; H.J. Trodahl ; E.-M. Anton ; C. Meyer ; L. Ranno ; F. Wilhelm ; A. Rogalev ;
Date:	23 Jun 2013
Abstract:	Europium nitride is semiconducting and contains non-magnetic 3+, but sub-stoichiometric EuN has Eu in a mix of 2+ and 3+ charge states. We show that at 2+ ~concentrations near 15-20% EuN is ferromagnetic with a Curie temperature as high as 120 K. The 3+ ~polarization follows that of the 2+, confirming that the ferromagnetism is intrinsic to the EuN which is thus a novel diluted magnetic semiconductor. Transport measurements shed light on the likely exchange mechanisms.
Source:	arXiv, 1306.5477
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