A. S. Borukhovich, N. I. Ignat'eva, K. I. Yanushkevich, A. I. Stognii, “Mössbauer spectroscopy study of the EuO:Fe spintronic material”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2009, Volume 89, Issue 4,Pages <nobr>215

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CONDENSED MATTER

Mössbauer spectroscopy study of the EuO:Fe spintronic material

A. S. Borukhovich^ab, N. I. Ignat'eva^a, K. I. Yanushkevich^c, A. I. Stognii^c

^a Institute of Solid State Chemistry, Urals Branch of the Russian Academy of Sciences
^b Russian State Professional Pedagogical University
^c Scientific-Practical Materials Research Centre of NAS of Belarus

Abstract: The states of iron and europium in the EuO:Fe composite spintronic material have been studied by means of room-temperature Mössbauer spectroscopy. In both cases, two sets of lines indicating the ferromagnetism and superparamagnetism of metallic iron nanoparticles in the composite and the appearance of a fraction of europium ions in the Eu³⁺ oxidation state in the matrix in addition to the main Eu²⁺ state have been observed in the respective spectra. In the europium case, the observation implies the possibility of a partial spin polarization of paramagnetic europium ions in Eu-Fe-O clusters and an increased specific magnetization of the composite.

PACS: 75.25.+z, 85.75.-d

Received: 12.01.2009