Structural, microstructural and dielectric studies in multiferroic LaSrNiO4-δ prepared by mechanical milling method
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- 作者：A. Chouketa ; W. Cheikhrouhou-Koubaaa ; A. Cheikhrouhoua ; V. Optasanub ; O. Bidaultb ; M. Khitounic ;
- 关键词：Mechanical milling method ; XDR ; K2NiF4-type structure ; Rietveld refinement ; Structure ; Dielectric measurements
- 刊名：Journal of Alloys and Compounds
- 出版年：2016
- 出版时间：25 March 2016
- 年：2016
- 卷：662
- 期：Complete
- 页码：467-474
- 全文大小：2103 K
文摘
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LaSrNiO4-δ compound has been successfully prepared by mechanical milling for 10 h and heat treatment at 1300 °C for 8 h.
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The X-ray diffraction analysis revealed LaSrNiO4-δ single phase, exhibiting tetragonal structure with space group of I4/mmm.
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The ED pattern was used for sample using the [001] orientation and the corresponding lattice images show the compound to be well ordered.
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Giant dielectric response was observed in the present ceramic, and only one dielectric relaxation was found on the curve of the temperature dependence of dielectric constant.