Magnetic structure of NdMnO3 consistently doped with Sr and Ru

A. M. Balagurov, S. N. Bushmeleva, V. Yu Pomjakushin, D. V. Sheptyakov, V. A. Amelichev, O. Yu Gorbenko, A. R. Kaul, E. A. Gan'shina, N. B. Perkins

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Abstract

The crystal and magnetic structures of the (Nd1-xSr x)(Mn1-xRux)O3 perovskites have been studied by neutron powder diffraction and muon spin relaxation. The simultaneous and consistent doping of the A- and B-sites with Sr and Ru has been used for avoiding the Mn4+ formation and hence, suppression of the double exchange. All studied samples (0≤×≤0.875) are insulators and show unusual long-range ferromagnetic state, which can be called "statistical ferrimagnet," with antiferromagnetic coupling between Mn and Ru magnetic moments, and ferromagnetic coupling in the Mn-Mn and Ru-Ru pairs.

Original languageEnglish (US)
Article number014427
Pages (from-to)014427-1-014427-8
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume70
Issue number1
DOIs
StatePublished - Jul 2004

Bibliographical note

Funding Information:
The authors are grateful to P. Fischer and N. M. Plakida for helpful discussions. The work was done with the help of the Russian program RFBR (projects 00-02-16736 and 02-03-33258), the INTAS foundation (project 01-2008) and the Swiss foundation SNSF (project 7SUPJ062190.00/1). This work was partially performed at the spallation neutron source SINQ, Paul Scherrer Institut, Villigen, Switzerland.

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