TY - GEN
T1 - Effects of sintering time and cooling process on FeSe superconductors synthesized by powder in sealed tube technique
AU - Herbirowo, Satrio
AU - Yuwono, Akhmad Herman
AU - Sofyan, Nofrijon
AU - Aryanto, Didik
AU - Pramono, Andika Widya
AU - Imaduddin, Agung
N1 - Funding Information:
The authors are grateful to the PUTI Doctor UI 2020, under contract No. NKB-680/UN2.RST/HKP.05.00/2020 and Indonesian Institute of Sciences (LIPI) for their financial support.
Publisher Copyright:
© 2023 Author(s).
PY - 2023/5/9
Y1 - 2023/5/9
N2 - Several studies have determined the potential of the Fe-based superconductor metal material and its industrial application. However, this study analyzes the effects of sintering time and cooling process on FeSe superconductors synthesized using the powder in a sealed tube technique. The research was carried out by mixing and grinding the conventional analytical powders of Fe (99.9% purity) and Se (99.9% purity) in the stoichiometry ratio of 1:1 for three hours. The mixed powder was sealed and pressed in SS 316L tube using a uniaxial pressure of 150 MPa. Furthermore, the sintering process was carried out for 2 and 6 hours at 800°C, using the air (fast) and furnace (slow) cooling processes. The samples were characterized to analyze their superconductivity properties using a scanning electron microscope (SEM), x-ray diffraction (XRD), as well as their electrical resistivity versus temperature measurement using cryogenic systems. XRD results showed that a significant phase of β-FeSe with tetragonal acts as a superconductor metal material. In addition, the prolonged sintering time and cooling process led to the formation of amorphous hexagonal δ-FeSe. Therefore, based on the measurement of electrical resistance and temperature analysis, the optimum sample was obtained on a FeSe-1 with 2 hours sintering time and fast cooling in the air showing a sharp superconducting transition with Tc onset of 16 K and Tc zero of 7.75 K, respectively.
AB - Several studies have determined the potential of the Fe-based superconductor metal material and its industrial application. However, this study analyzes the effects of sintering time and cooling process on FeSe superconductors synthesized using the powder in a sealed tube technique. The research was carried out by mixing and grinding the conventional analytical powders of Fe (99.9% purity) and Se (99.9% purity) in the stoichiometry ratio of 1:1 for three hours. The mixed powder was sealed and pressed in SS 316L tube using a uniaxial pressure of 150 MPa. Furthermore, the sintering process was carried out for 2 and 6 hours at 800°C, using the air (fast) and furnace (slow) cooling processes. The samples were characterized to analyze their superconductivity properties using a scanning electron microscope (SEM), x-ray diffraction (XRD), as well as their electrical resistivity versus temperature measurement using cryogenic systems. XRD results showed that a significant phase of β-FeSe with tetragonal acts as a superconductor metal material. In addition, the prolonged sintering time and cooling process led to the formation of amorphous hexagonal δ-FeSe. Therefore, based on the measurement of electrical resistance and temperature analysis, the optimum sample was obtained on a FeSe-1 with 2 hours sintering time and fast cooling in the air showing a sharp superconducting transition with Tc onset of 16 K and Tc zero of 7.75 K, respectively.
UR - http://www.scopus.com/inward/record.url?scp=85160077167&partnerID=8YFLogxK
U2 - 10.1063/5.0114906
DO - 10.1063/5.0114906
M3 - Conference contribution
AN - SCOPUS:85160077167
T3 - AIP Conference Proceedings
BT - Advances in Metallurgy and Engineering Materials
A2 - Fatriansyah, Jaka Fajar
A2 - Ferdian, Deni
A2 - Putra, Wahyuaji Narottama
A2 - Yuwono, Akhmad Herman
A2 - Dhaneswara, Donanta
A2 - Sofyan, Nofrijon
PB - American Institute of Physics Inc.
T2 - International Meeting on Advances in Metallurgy and Materials 2020, i-MAMM 2020
Y2 - 16 November 2020 through 17 November 2020
ER -