Synthesis and electrophysical characterization of a three-phase Ca–Nd–Mn–Ni–O oxide system

Scientific Reports

卷:16

Article

Zhenisgul Sagintaeva¹  Shuga Kasenova¹  Bulat Kasenov¹  Erbolat Kuanyshbekov¹  Aigul Ordabaeva²  Zhanar Tursinova³ 

[1] Zh. Abishev Chemical-Metallurgical Institute, 100009, Karaganda, Kazakhstan

[2] Institute of Organic Synthesis and Coal Chemistry of Republic Kazakhstan, 100008, Karaganda, Kazakhstan

[3] Kazakh National Women’s Teacher Training University, 050000, Almaty, Kazakhstan

关键词: Neodymium;    Calcium;    Nickel-manganite;    Electrophysics;   

DOI  :  10.1038/s41598-026-59331-y

 received in 2026-01-26, accepted in 2026-06-19,  发布年份 2026

来源: Springer

【 摘 要 】

The three-phase Ca–Nd–Mn–Ni–O oxide system was synthesized by a conventional solid-state ceramic method. The phase composition was investigated by X-ray diffraction (XRD) analysis using the PDF-5+/Rigaku SmartLab Studio II software package and was further confirmed by Rietveld refinement employing the GSAS-II software suite. According to the WPPF/Rietveld refinement results, the synthesized material predominantly consists of the Nd₀.₂₅Ca₁.₇₅MnO₄ phase (67.2 wt%), together with the perovskite-like Ca₀.₅Nd₀.₅Mn₀.₉₇Ni₀.₀₃O₃ phase (25.6 wt%) and a minor (Ni₀.₉₄Mn₀.₀₆)O phase (7.2 wt%). SEM analysis revealed an agglomerated granular morphology with porous regions, while elemental mapping confirmed the presence of Ca, Nd, Mn, Ni, and O in the synthesized material. FTIR spectroscopy showed characteristic metal–oxygen vibrational bands associated with [MnO₆] and [NiO₆] octahedral units. The electrical properties were investigated in the temperature range of 293–483 K at a frequency of 1 kHz. The material exhibited semiconducting behavior, and the calculated activation energies of electrical conduction were found to be 0.49 and 0.56 eV for the temperature intervals of 293–353 K and 393–483 K, respectively.

【 授权许可】

CC BY-NC-ND   
© The Author(s) 2026

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