Sintesis dan Karaktrisasi Superkonduktor FeSe1-xTex (x=0,5;0,75) melalui Reaksi Padatan Menggunakan Metode Powder-In-Sealed-Tube

Ramadhanty, Mutia Anjli (2019) Sintesis dan Karaktrisasi Superkonduktor FeSe1-xTex (x=0,5;0,75) melalui Reaksi Padatan Menggunakan Metode Powder-In-Sealed-Tube. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Sintesis FeSe1-xTex (x=0,5;0,75) telah dilakukan dengan menggunakan metode Powder-In-Sealed-Tube (PIST), dengan masing – masing mol diberikann variasi suhu sintering 700oC dan 750oC dan selanjutnya dikakterisasi dengan uji XRD, uji SEM-EDX, dan uji Cryogenic magnet. Dari hasil analisa XRD penambahan komposisi Te terhadap pembentukan fasa superkonduktor FeSe1-xTex (x=0,5;0,75), terbentuk fasa Fe (Se,Te) , FeTe2, dan Fe murni pada semua sampel serta prosentase fasa Fe (Se,Te) yang dominan sangat menentukan munculnya superkonduktivitas pada sampel. Analisa SEM-EDX dilakukan hanya pada sampel 1 (FeSe0,5Te0,5 700oC) dan 3 (FeSe0,25Te0,75 700oC), kedua sampel membentuk gumpalan-gumpalan dengan ukuran mikrometer, menandakan bahwa sampel satu sama lain saling berikatan, morfologi permukaan terlihat lebih heterogen pada semua sampel. Sedangkan analisa EDX persebaran unsur yang lebih dominan adalah Fe dan Te. Pada analisa Cryogenic, penambahan komposisi Te pada pembuatan superkoduktor FeSe tidak berpengaruh, melainkan kemunculan nilai Tc bergantung pada suhu sintering, yaitu sampel dengan mol FeSe0,5Te0,5 dengan suhu sintering yang berbeda, dimana nilai Tc tidak muncul pada sampel 2 dengan suhu sintering 750oC . Sedangkan, pada sampel 1 memiliki sifat superkonduktivitas, dimana terdapat Tc pada sampel dengan suhu pemanasan 700oC sebesar 15 K. Berdasarkan hasil tersebut kemunculan banyaknya prosentase fasa FeSe sangat penting untuk menimbulkann sifat superkonduktivitas.
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Synthesis of FeSe1-xTex (x=0,5; 0,75) was done by using Powder-In-Sealed-Tube (PIST) method, whis is each mol was given the variation of sintering-heat were 700 oC and 750 oC respectively and continued by doing characterization with XRD test, SEM-EDX, and cryogenic test. Based on the results of XRD test showed that the addition of composition Te led to the superconductor phase formation of FeSe1-xTex (x=0,5;0,75) formed were phase Fe (Se,Te), FeTe2 and pure Fe on each samples with dominant percentage of Fe (Se, Te) phase greatly determines the appearance of superconductivity in the sample. SEM-EDX analysis was done on sample 1 (FeSe0.5Te0.5 700 oC) and on sample 3 (FeSe0.25Te0.75 700 oC), those samples formed lumps in micrometer size. It showed that sample 1 and sample 3 are binded each other, the morphology of surface showed more heterogen than the other samples. Based on the results of EDX test showed that the the more dominant dissemination element were Fe and Te. Based on the results of Cryogenic test showed that on the making of superconductor FeSe which doping by Te on 750 oC of sintering heat were not showed the existance of Tc on sample 2, but on sample 1 has superconductor characteristic with Tc were 15K. It concluded that to get percentage FeSe phase need to form the superconductor characteristic.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	FeSe, FeTe, PIST, and Critical Temperature
Subjects:	Q Science > QC Physics > QC271 Temperature measurements Q Science > QC Physics > QC 611.97.T46 Temperature effects. Including transition temperature
Divisions:	Faculty of Natural Science > Physics > 45201-(S1) Undergraduate Thesis
Depositing User:	Mutia Anjli Ramadhanty
Date Deposited:	20 Jul 2026 03:06
Last Modified:	20 Jul 2026 03:06
URI:	http://repository.its.ac.id/id/eprint/66456

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