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

被引：0

作者：

Harsita, M. ^{[1
]}

Kodam, Ugendar ^{[1
]}

Mishra, S. K. ^{[2
,3
]}

Rao, T. Durga ^{[1
]}

Borole, Smita ^{[4
]}

Rayaprol, S. ^{[4
]}

Krishna, P. S. R. ^{[2
]}

Sattibabu, Bhumireddi ^{[1
]}

机构：

[1] GITAM Deemed Univ, Sch Sci, Dept Phys, Visakhapatnam 530045, Andhra Pradesh, India

[2] Bhabha Atom Res Ctr, Solid State Phys Div, Mumbai 400085, India

[3] Homi Bhabha Natl Inst, Mumbai 400094, India

[4] UGC, DAE Consortium Sci Res, Mumbai Ctr, Mumbai 400085, India

来源：

MATERIALS LETTERS | 2025年 / 391卷

关键词：

Double perovskites; Refinement; Magnetic materials; Neutron diffraction;

D O I：

10.1016/j.matlet.2025.138481

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Double perovskite La2-xErxNiMnO6 (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 (Tc1) 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 x 107 erg/cm3) due to La3+ substitution by Er3+.

引用

页数：4

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