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<p>The manganites CaMnO<sub>3</sub> and R<sub>1–x</sub>Ca<sub>x</sub>MnO<sub>3</sub> (R = Nd, Gd; x = 0.0, 0.2) were studied using x-ray photoelectron spectroscopy (XPS). Core-level spectra of all elements in the compounds were analyzed. Chemical shifts reflecting the evolution of the ion valence states as functions of the composition were identified. The effective spin and charge states of Mn ions were determined by analyzing the multiplet splitting of Mn 3s spectra. The results expanded the existing XPS database on the electronic structure of manganites and confirmed the effectiveness of this method for analyzing the valence of manganese in complex oxides.</p>

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Influence of Composition on the Electronic Structure of Manganites R1–xCAxMnO3 (R = Nd, Gd; X = 0.0, 0.2) According to X-Ray Photoelectron Spectroscopy Data

  • 期刊论文

  • 发表日期：

    2026年2月28日

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  • S. Kh. Estemirova

摘要

The manganites CaMnO3 and R1–xCaxMnO3 (R = Nd, Gd; x = 0.0, 0.2) were studied using x-ray photoelectron spectroscopy (XPS). Core-level spectra of all elements in the compounds were analyzed. Chemical shifts reflecting the evolution of the ion valence states as functions of the composition were identified. The effective spin and charge states of Mn ions were determined by analyzing the multiplet splitting of Mn 3s spectra. The results expanded the existing XPS database on the electronic structure of manganites and confirmed the effectiveness of this method for analyzing the valence of manganese in complex oxides.