Neutron Diffraction, Structural and Magnetic Properties of (La1-YPry)0.9Na0.1MnO3

Author

S. Megdiche
Mohamed Ellouze
A. Cheikh-Rouhou
Q. Cai
William B. Yelon, Missouri University of Science and TechnologyFollow

Abstract

A systematic study of the structural and magnetic properties of the diluted perovskite manganite oxides (La_1-yPr_y)_0.9Na_0.1MnO₃ (0.2≤y≤0.8) had been carried on. in this study, the average ionic radius 〈rA〉 of a cation site was systematically varied while keeping fixed the carrier concentration (Mn³⁺/Mn⁴⁺ ratio). X-Ray diffraction investigations showed a structural transition from the rhombohedral to the orthorhombic system for 0.33≤y≤0.5. the unit cell volume decreases with increasing Pr³⁺ content. Magnetic measurements showed that our synthesized samples exhibit a paramagnetic to ferromagnetic transition with decreasing temperature. Neutron diffraction studies show that (La_0.2Pr_0.8)_0.9Na_0.1MnO₃ powder sample crystallizes in the orthorhombic system with Pnma space group at room temperature and at 10 K. the magnetic moment of Pr and Mn atoms are coupled parallel to the b-axis. © 2002 Elsevier Science B.V. All rights reserved.

Recommended Citation

S. Megdiche et al., "Neutron Diffraction, Structural and Magnetic Properties of (La1-YPry)0.9Na0.1MnO3," Journal of Alloys and Compounds, vol. 348, no. 1 thru 2, pp. 30 - 37, Elsevier, Jan 2003.

The definitive version is available at https://doi.org/10.1016/S0925-8388(02)00830-7

Department(s)

Physics

Keywords and Phrases

Crystal structure; Magnetic measurements; Magnetically ordered materials; Neutron diffraction; Oxide materials

International Standard Serial Number (ISSN)

0925-8388

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Elsevier, All rights reserved.

Publication Date

13 Jan 2003