Neutron diffraction and magnetic study of the Nd{sub 0.7}Pb{sub 0.3}Mn{sub 1-x}Fe{sub x}O{sub 3} (0=<x=<0.1) perovskites

Journal Article · Wed Mar 15 00:00:00 EST 2006 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2005.11.017· OSTI ID:20784903

Blanco, J J ^[1]; Insausti, M ^[1]; Gil de Muro, I ^[1]; Lezama, L ^[1]; Rojo, T ^[1]

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1. Dpto. Quimica Inorganica, Facultad de Ciencia y Tecnologia. Universidad del Pais Vasco, U.P.V./E.H.U. Apdo. 644, E-48080 Bilbao (Spain)

The effect of Fe doping on the ferromagnetic Nd{sub 0.7}Pb{sub 0.3}Mn{sub 1-x}Fe{sub x}O{sub 3} (x=0, 0.025, 0.05, 0.075, 0.1) phases has been studied in order to analyze the double-exchange interaction. The structural and magnetic study has been carried out by neutron powder diffraction and susceptibility measurements between 1.7 and 300K. The substitution of Fe at the Mn site results in reductions in both the Curie temperature T{sub c} and the magnetic moment per Mn ion without appreciable differences in the crystal structures. All the compounds crystallize in Pnma space group. The thermal evolution of the lattice parameters of the Nd{sub 0.7}Pb{sub 0.3}Mn{sub 1-x}Fe{sub x}O{sub 3} (x=0.025, 0.05, 0.075) compounds shows discontinuities in volume and lattice parameters close to the magnetic transition temperature. Increasing amounts of Fe{sup 3+} reduces the double exchange interactions and no magnetic contribution for x=0.1 is observed. The magnetic structures of Nd{sub 0.7}Pb{sub 0.3}Mn{sub 1-x}Fe{sub x}O{sub 3} (x=0, 0.025, 0.05, 0.075) compounds show that the Nd and Mn ions are ferromagnetically ordered.

• OSTI ID: 20784903
• Journal Information: Journal of Solid State Chemistry, Vol. 179, Issue 3; Other Information: DOI: 10.1016/j.jssc.2005.11.017; PII: S0022-4596(05)00537-2; Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CURIE POINT
DOPED MATERIALS
EXCHANGE INTERACTIONS
IRON COMPOUNDS
IRON IONS
LATTICE PARAMETERS
LEAD COMPOUNDS
MAGNETIC MOMENTS
MANGANESE COMPOUNDS
MANGANESE IONS
NEODYMIUM COMPOUNDS
NEUTRON DIFFRACTION
ORTHORHOMBIC LATTICES
PEROVSKITES
SPACE GROUPS
TEMPERATURE RANGE 0000-0013 K
TEMPERATURE RANGE 0013-0065 K
TEMPERATURE RANGE 0065-0273 K
TEMPERATURE RANGE 0273-0400 K