Effect of sintering temperature on cation distribution in CoFe2O4 nanoparticles

被引：0

作者：

Bilovol, V. ^{[1
]}

Jelen, P. ^{[2
]}

Mech, K. ^{[1
]}

Sokolowski, K. ^{[1
]}

Botella, P. ^{[3
]}

Bandiello, E. ^{[4
]}

Manjon, F. J. ^{[4
]}

Errandonea, D. ^{[3
]}

机构：

[1] AGH Univ Krakow, Acad Ctr Mat & Nanotechnol, Al Mickiewicza 30, PL-30059 Krakow, Poland

[2] AGH Univ Krakow, Dept Mat Sci & Ceram, PL-32059 Krakow, Poland

[3] Univ Valencia, Dept Fis Aplicada, MALTA Consolider Team, ICMUV, Valencia 46100, Spain

[4] Univ Politecn Valencia, MALTA Consolider Team, Inst Diseno Fabricac & Prod Automatizada, Valencia 46022, Spain

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2025年 / 347卷

关键词：

MAGNETIC-PROPERTIES; FERRITE NANOPARTICLES; FACILE SYNTHESIS; COPRECIPITATION; BEHAVIOR; SPECTRA; SPINEL; SIZE;

D O I：

10.1016/j.jssc.2025.125338

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

We report a study of the cation arrangement in CoFe2O4 nanoparticles synthesized using a co-precipitation method followed by high-temperature sintering in the range of 500-1000 degrees C. Analysis of the samples by Raman, infrared, and X-ray photoelectron spectroscopy (Fe 2p3/2 and Co 2p3/2) revealed that the sintering temperature influences the distribution of cations in the spinel lattice. Specifically, increasing the sintering temperature leads to an increase in the inversion degree parameter (gamma), which represents the fraction of Co ions residing in octahedral sites, driving the structure toward a fully inverted spinel. These results are in good agreement with those previously obtained by 57Fe Mo<spacing diaeresis>ssbauer spectroscopy, X-ray diffraction, and X-ray absorption experiments on the same set of samples. Additionally, as shown by the UV-visible spectra, the cationic distribution in the samples clearly affects the band gap value (2.5-2.8 eV).

引用

页数：10

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