ANALISIS PENGARUH TEKANAN TERHADAP PEMBENTUKAN FASA DAN SUHU KRITIS SUPERKONDUKTOR FeSe
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Bikri, Mukhamad Amir
Pramono, Andika W
Yudanto, Sigit Dwi
Pramono, Andika W
Yudanto, Sigit Dwi
Subject
Teknik Mesin
Datestamp
2019-10-20 07:17:00
Abstract :
In this study FeSe Superconductor synthesis will be carried out through mechanical integration and solid reaction processes. FeSe superconductors are new superconductors discovered in 2008. However, there are several problems in the synthesis process, so much research on FeSe superconductor synthesis. The purpose of this study was to determine the effect of temperature variations and pressure variations on the structural properties and superconductivity of FeSe, so that it can be used as one of the iron-based superconductor candidates. The variation of stoichiometric composition used is Fese 1:1 In synthesis it is as if variations in temperature and sintering pressure are performed to obtain optimal temperature and sintering pressure. After obtaining the optimal temperature, variations in Fe composition are used. The raw material used contains Fe purity (99.0% ) and Se (99.0%). The method used is powder metallurgical method with a combination of mechanics using High Energy Milling (HEM) for 5 hours, then packing (Packing) in SS316 tube and then compacting with hydraulic press and the last synthesis process is sintering using a furnace with holding time 6 hour. The characterization carried out was the X-Ray Diffraction (XRD) test, Scanning Electron Microscopy (SEM-EDS) test and Crytogenic test. It was hoped that the FeSe stoichiometric composition and temperature and pressure variations could form the FeSe phase with the Tetragonal (?-FeSe) Crystal structure maximum.
In this study FeSe Superconductor synthesis will be carried out through mechanical integration and solid reaction processes. FeSe superconductors are new superconductors discovered in 2008. However, there are several problems in the synthesis process, so much research on FeSe superconductor synthesis. The purpose of this study was to determine the effect of temperature variations and pressure variations on the structural properties and superconductivity of FeSe, so that it can be used as one of the iron-based superconductor candidates. The variation of stoichiometric composition used is Fese 1:1 In synthesis it is as if variations in temperature and sintering pressure are performed to obtain optimal temperature and sintering pressure. After obtaining the optimal temperature, variations in Fe composition are used. The raw material used contains Fe purity (99.0% ) and Se (99.0%). The method used is powder metallurgical method with a combination of mechanics using High Energy Milling (HEM) for 5 hours, then packing (Packing) in SS316 tube and then compacting with hydraulic press and the last synthesis process is sintering using a furnace with holding time 6 hour. The characterization carried out was the X-Ray Diffraction (XRD) test, Scanning Electron Microscopy (SEM-EDS) test and Crytogenic test. It was hoped that the FeSe stoichiometric composition and temperature and pressure variations could form the FeSe phase with the Tetragonal (?-FeSe) Crystal structure maximum.
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