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Issue 18, 2017
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Microstructure and magnetic properties of Y2/3Cu3Ti4O12 ceramic

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Abstract

Y2/3Cu3Ti4O12 (YCTO) ceramic was prepared via the semi-wet route. Rietveld refinement of XRD peaks suggested a pseudo-cubic symmetry with the lattice parameter = 7.3775 Å and the space group Im[3 with combining macron] (No. 204). The opted process of synthesis allowed Y3+ and Cu2+ ions to be placed at the respective theoretical sites within the acceptable occupancy range. Y3+ ions occupy the face and edge centred positions and Cu2+ ions occupy the corner and body centred positions of the cube. Y2/3Cu3Ti4O12 differs from CaCu3Ti4O12 in which Ca2+ ions occupy the corner and body centred positions and Cu2+ ions occupy the face and edge centred positions of the cube. AFM studies revealed a platykurtic type of distribution of round shaped grains with the average size of 59 nm. The root-mean-square and average roughness of a homogeneous thin film of YCTO are estimated to be 2.288 and 1.854 nm, respectively. The magnetic studies establish that the YCTO ceramic remains in paramagnetic phase at 300 K, although it undergoes an antiferromagnetic to paramagnetic transition around its Neel temperature, TN = 24.34 K.

Graphical abstract: Microstructure and magnetic properties of Y2/3Cu3Ti4O12 ceramic

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Publication details

The article was received on 13 Jun 2017, accepted on 02 Aug 2017 and first published on 08 Aug 2017


Article type: Paper
DOI: 10.1039/C7NJ02122D
Citation: New J. Chem., 2017,41, 10383-10389
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    Microstructure and magnetic properties of Y2/3Cu3Ti4O12 ceramic

    S. Sharma, M. M. Singh and K. D. Mandal, New J. Chem., 2017, 41, 10383
    DOI: 10.1039/C7NJ02122D

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