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Structural and magnetic study of RFe0.5V0.5O3 (R=Y, Eu, Nd, La) perovskite compounds |
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| Authors: | M. Gateshki L. Suescun S. Kolesnik B. Dabrowski |
| Affiliation: | a Bragg Institute, Australian Nuclear Science and Technology Organization, Menai, NSW 2234, Australia b Cryssmat-Lab/Detema, Facultad de Química, Universidad de la República, P.O. Box 1157, Montevideo, Uruguay c Physics Department, Northern Illinois University, DeKalb, IL 60115, USA d Materials Science Division, Argonne National Laboratory, Argonne, IL 60439, USA |
| Abstract: | B-site disordered RFe0.5V0.5O3 compounds, with R=La, Nd, Eu and Y, have been prepared by solid-state reaction technique and their structures and magnetic properties have been investigated through X-ray powder diffraction, time-of-flight neutron powder diffraction and magnetization measurements at temperatures ranging from 5 to 700 K. The four compounds can be described as distorted perovskites with space group symmetry Pbnm and a+b−b− tilt system. The studied compounds also show antiferromagnetic ordering with Neel temperatures of 299, 304, 304, and 335 K respectively. The magnetic structures of R=La, Nd and Y compounds were determined from the neutron powder diffraction as Gz with observed magnetic moments of 2.55, 2.54 and 2.69μB at 30, 40 and 40 K, respectively. |
| Keywords: | Perovskite Magnetic structure Rietveld analysis Neutron powder diffraction Antiferromagnetic Cation ordering |
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