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Structural and Magnetic Properties of La0.7Sr0.3Mn1-xNixO3 (x=0.05, 0.1, 0.2, 0.3, 0.4)

Published online by Cambridge University Press:  23 June 2011

Thomas F. Creel ,
Jinbo B. Yang ,
Mehmet Kahveci ,
Jagat Lamsal ,
Satish K. Malik ,
S. Quezado ,
B. W. Benapfl ,
H. Blackstead ,
O. A. Pringle  and
William B. Yelon
...Show all authors
Thomas F. Creel
Affiliation:
Department of Physics, Missouri University of Science and Technology, Rolla, MO, U.S.A.
Jinbo B. Yang
Affiliation:
State Key Laboratory for Artificial Microstructure and Mesoscopic Physics and School of Physics, Peking University, Beijing
Mehmet Kahveci
Affiliation:
Department of Physics, University of Missouri, Columbia, MO, U.S.A
Jagat Lamsal
Affiliation:
Department of Physics, University of Missouri, Columbia, MO, U.S.A
Satish K. Malik
Affiliation:
Departamento de Física Teórica e Experimental, UFRN, 59072-970 NATAL- RN, Brazil
S. Quezado
Affiliation:
Departamento de Física Teórica e Experimental, UFRN, 59072-970 NATAL- RN, Brazil
B. W. Benapfl
Affiliation:
Department of Physics, University of Notre Dame, IN, U.S.A.
H. Blackstead
Affiliation:
Department of Physics, University of Notre Dame, IN, U.S.A.
O. A. Pringle
Affiliation:
Department of Physics, Missouri University of Science and Technology, Rolla, MO, U.S.A.
William B. Yelon
Affiliation:
Center for Materials Science Research, Missouri University of Science and Technology, Rolla, MO, U.S.A.
William J. James
Affiliation:
Center for Materials Science Research, Missouri University of Science and Technology, Rolla, MO, U.S.A.
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Abstract

We have studied the structural and magnetic properties of La0.7Sr0.3Mn1-xNixO3 (x=0.05, 0.10, 0.20, 0.30, and 0.40) perovskites using x-ray and neutron diffraction and magnetic measurements. To our knowledge, there exists no neutron diffraction data available for this group of perovskite compositions. Neutron (λ = 1.479Å) and x-ray (λ = 1.5481Å; Cu Kα) powder diffraction indicate that for x ≥ 0.1 all samples are two-phase with a rhombohedral perovskite structure (space group R-3c) and a small amount of NiO (space group Fm3m). Neutron diffraction data for the perovskite phase at 12K and 300K show ferromagnetic ordering for x ≤ 0.2 and antiferromagnetic ordering for x = 0.4. However, for x = 0.3, neutron diffraction data at 12K show coexisting ferromagnetic and antiferromagnetic ordering while at 300K no magnetic ordering is found. Magnetic measurements indicate that the Curie temperature decreases with increasing Ni content. The NiO phase for all samples was found to have antiferromagnetic ordering at 12K and 300K. The magnetic measurements are consistent with the neutron diffraction data and together indicate long-range magnetic ordering for samples at low temperature and transitions from ferromagnetic to paramagnetic to antiferromagnetic ordering for samples at room temperature.

Keywords

crystallographic structuremagnetic propertiesneutron scattering
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1327: Symposium G – Complex Oxide Materials for Emerging Energy Technologies , 2011 , mrss11-1327-g08-02
Copyright
Copyright © Materials Research Society 2011

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