Combined structural refinement using x-ray and neutron diffraction and magnetic properties of double perovskites La2-xErxNiMnO6

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-03-28 DOI:10.1016/j.matlet.2025.138481

M. Harsita , Ugendar Kodam , S.K. Mishra , T. Durga Rao , Smita Borole , S. Rayaprol , P.S.R. Krishna , Bhumireddi Sattibabu

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引用次数: 0

Abstract

Double perovskite La_2-xEr_xNiMnO₆ (x = 0.00, 0.05, 0.10, 0.15) was synthesized via the solid-state reaction method. The impact of Er³⁺ substitution at the La site on structural and magnetic properties was systematically studied. Rietveld refinement of combined X-ray and neutron diffraction data confirmed a monoclinic (P2₁/n) and rhombohedral (R-3) phase for La₂NiMnO₆, while Er doping stabilized the monoclinic phase. The average grain size increased with Er concentration. FTIR and Raman spectra verified characteristic double perovskite bands. The Curie temperature (T_c1) decreased from 250 K (x = 0.00) to 224 K (x = 0.15), attributed to reduced Ni–O–Mn bond angles and increased Mn/Ni–O bond lengths. The x = 0.05 composition exhibited higher magnetocrystalline anisotropy (7.5 × 10⁷ erg/cm³) due to La³⁺ substitution by Er³⁺.

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive