Journal Article

PUBDB-2024-02015

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Effects of Ni doping on structural, magnetic and catalytic properties of copper ferrite

Piskuła, Z. S. (Corresponding author)Extern* ; Darul, J.Extern* ; Szafran, M.Extern* ; Toliński, T.Extern* ; Nowicki, W.Extern*

2024
North-Holland Publ. Co. Amsterdam

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Please use a persistent id in citations: doi:10.1016/j.jmmm.2023.171693  doi:10.3204/PUBDB-2024-02015

Abstract: The aim of this work was to obtain information about the influence of small quantities of Ni$^{2+}$ ion on thestructural and magnetic properties of the tetragonally distorted of Cu$_{1-x}$Ni$_x$Fe$_2$O4 series (with x = 0.00, 0.05,0.1, and 0.15 respectively). The tested ferrite system was synthesized by combustion of citrate–nitrate precursors.The synchrotron X-ray diffraction measurements determined the phase transition temperatures (tetragonal →cubic) of all samples. The change of structures under the influence of temperature shows a phase transition in therange of 390 – 400 ◦C for x = 0.00, 330 – 370 ◦C for x = 0.05, 210 – 330 ◦C for x = 0.1 and 140 – 210 ◦C for x= 0.15, respectively. The initial phase transition temperature decreases linearly with the decreasing c/a ratio ofthe crystallographic lattice parameters for the Cu$_{1-x}$Ni$_x$Fe$_2$O$_4$ oxides. Hysteresis measurements were made todetermine the saturation magnetization (M$_S$) and coercive field (μ$_0$H$_c$) of the samples. The values of magneticmoments at room temperature determined from magnetization measurements are very similar to those obtainedfrom theoretical x-ray diffraction calculations. Magnetic moment values per formula unit are estimated to rangefrom 1.16 μB to 1.5 μB. It was found that the catalytic activity of N$_2$O decomposition of samples increases withincreasing nickel content.

Note: (FP7/2007–2013) under Grant agreement no. 226716.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 899 - ohne Topic (POF4-899) (POF4-899)
2. FS-Proposal: I-20110697 EC (I-20110697-EC) (I-20110697-EC)
3. FS-Proposal: I-20100021 EC (I-20100021-EC) (I-20100021-EC)

Experiment(s):

1. DORIS Beamline B2 (DORIS III)

Appears in the scientific report 2024

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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