Analisis Sifat Superkonduktor Bi1,6pb0,4sr2ca2cu3o10+Δ dengan Penambahan Dopan Al2o3 Dan Mgo Menggunakan Metode Sol-Gel
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Date
2021Author
Lubis, Eka Feby Ronauli
Advisor(s)
Humaidi, Syahrul
Darsono, Nono
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This study aims to observe the effect of adding dopant Al2O3 and MgO to the critical temperature of superconductors Bi1,6Pb0,4Sr2Ca2Cu3O10+δ. The BPSCCO sample was prepared by the sol-gel method using a nitrate-based powder and then added with Magnesium Oxide and Aluminum Oxide nanoparticles. The sample sintering process was carried out in a furnace at a 840 °C for 60 hours. Phase structure and morphology was examined by X-Ray Diffraction (XRD) and Scanning Electron Microscope (SEM). Value determination of critical onset temperature (Tc-onset), and critical offset temperature (Tc-offset) using cryogenic magnets. XRD characterization showed, the Bi-2212 phase was still dominant for all samples. The results of SEM characterization showed that the morphology of the BPSCCO superconductor was in the form of a layered plate. Based on the analysis of the resistivity result, the best Tc-onset value was found in the sample without addition, which was 119.16 K dan Tc-offset 110.75 K Penelitian ini bertujuan untuk melihat pengaruh penambahan dopan Al2O3 dan MgO terhadap suhu kritis superkonduktor Bi1,6Pb0,4Sr2Ca2Cu3O10+δ. Sampel BPSCCO dipreparasi dengan metode sol-gel dengan menggunakan bubuk yang berbasis nitrat dan kemudian diberikan penambahan nanopartikel Magnesium Oxide dan Aluminium Oxide. Proses sintering sampel dilakukan di dalam tungku pada suhu konstan 840 °C selama 60 jam. Pengamatan struktur fase dan Morfologi dilakukan masing-masing dengan menggunakan X-Ray Diffraction (XRD) dan Scanning Electron Microscope (SEM). Penentuan nilai suhu onset kritis (Tc-onset), dan suhu offset kritis (Tc-offset) menggunakan cryogenic magnet. Berdasarkan hasil karakterisasi XRD, fasa Bi-2212 masih dominan untuk semua sampel. Hasil karakterisasi SEM menunjukkan bahwa morfologi superkonduktor BPSCCO yang dihasilkan berbentuk lempengan yang berlapis. Berdasarkan hasil analisa hasil uji resistivity nilai Tc-onset terbaik ditemukan pada sampel tanpa penambahan yaitu sebesar 119.16 K dan Tc-offset 110.75 K.
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