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All Journal JFA (Jurnal Fisika dan Aplikasinya) INDONESIAN JOURNAL OF APPLIED PHYSICS
Resky Irfanita
Department Of Physics, Faculty Of Mathematics And Natural Science, Universitas Negeri Makassar, Jalan Daeng Tata Raya, Makassar 90223, Indonesia
Astronomy Energy Materials Science & Nanotechnology Physics

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A Structural Investigation of T’-Pr2-xCexCuO4 nanocrystals with x = 0.13 Putu Eka Dharma Putra; I Gede Arjana; Budi Haryanto; Resky Irfanita; Malik Anjelh Baqiya; Darminto Darminto
Jurnal Fisika dan Aplikasinya Vol 17, No 3 (2021)
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v17i3.9720

Abstract

This report is briefly investigating the structural defect information of T’-Pr2-xCexCuO4 (T’-PCCO) nanocrystals with x = 0.13 at three different calcination temperatures. The as-synthesized powder of Pr2-xCexCuO4 (PCCO) nanocrystals with x = 0.13 were synthesized by using the chemically dissolved method within three different calcination temperatures, namely 900oC, 950oC, and 1000oC for 15 h in air. X-ray diffraction (XRD) technique is used to characterize the phase, structural, and crystalline defect information on the nanocrystal powder. It is found that all the indexed peaks are confirmed as PCCO phase with space group of I4/mmm and a minor impurity of Fm-3m space group. The lattice parameters are confirmed to be fluctuated signifying the stability of the Coulomb force at those temperatures. The post-Rietveld analysis using Bond Valance Sum (BVS) calculation shows the Ce-dependent of T’-PCCO nanocrystals while the Fourier difference suggests that the created crystalline defect as a part of the tetravalent doping effect which binds stronger apical oxygen. Moreover, at Pr- and Cu-site, the scattering distribution are fluctuating with the stable structure at 1000oC. This initial structural information is worth complementing the fundamental feature for understanding the T’-type cuprates.
Sintering Temperature Effect to the Synthesis of SiC Produced from Rice Husk ash and 2B Graphite Pencils Resky Irfanita; Asnaeni Ansar; Ayu Hardianti Pratiwi; Jasruddin J; Subaer S
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 5, No 01 (2015): IJAP Volume 05 Issue 01 Year 2015
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v5i01.258

Abstract

The objective of this study is to investigate the effect of sintering temperature on the synthesis of SiC produced from rice husk ash (RHA) and 2B graphite pencils. The SiC was synthesized by using solid state reaction method sintered at temperatures of 750°C, 1000°C and 1200°C for 26 hours, 11.5 hours and 11.5 hours, respectively. The quantity and crystallinity level of SiC phase were measured by means of Rigaku MiniFlexII X-Ray Diffraction (XRD). The microstructure of SiC was examined by using Tescan Vega3SB Scanning Electron Microscopy (SEM). The XRD results showed that the concentration (wt%) of SiC phase increases with the increasing of sintering temperature. SEM results showed that the crystallinity level of SiC crystal is improving as the sintering temperature increases
Co-Authors Asnaeni Ansar Ayu Hardianti Pratiwi Budi Haryanto Darminto Darminto I Gede Arjana Jasruddin Daud Malago Malik Anjelh Baqiya Putu Eka Dharma Putra Subaer Subaer