Pengaruh doping Fe2O3 dan temperatur sintering terhadap sifat ferroelektrik dan ferromagnetik PbTiO3 dengan metode mechanical alloying

Fitria, Jennis (2015) Pengaruh doping Fe2O3 dan temperatur sintering terhadap sifat ferroelektrik dan ferromagnetik PbTiO3 dengan metode mechanical alloying. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Multiferoik merupakan topik yang menarik untuk perkembangan penting teknologi dan alam, di mana dua fenomena koeksistensi dari Ferromagnetik (FM) dan Ferroelektrik (FE). PbTiO3 merupakan material oksida tipe perovskite yang mempunyai peranan penting dalam aplikasi elektronik karena memiliki sifat, dielektrik, ferroelektrik, piezoelektrik dan magnetik. Namun masih sedikit yang meneliti tentang pendopingan Fe pada PbTiO3 yang dapat menaikkan sifat ferromagnetik sehingga material ini bisa menjadi multiferroik. Penelitian ini mempelajari tentang pengaruh variasi doping dan temperature sintering pada PbTiO3. Pembuatan nanopartikel Pb(Ti, Fe)O3 dilakukan dengan cara mencampur Fe2O3 pada PbTiO3 secara mechanical alloying. Untuk mengetahui perubahan yang terjadi ketika penambahan Fe dilakukan pengujian XRD, SEM-EDX, Ferroelektrik dan Suseptibilitas. Penelitian ini menggunakan variasi konsentrasi Fe2O3 0.2, 0.3, 0.4 mol dan temperatur sintering 950, 1000, 1050 ºC. PbTiO3 bersifat multiferroik dengan adanya penambahan Fe2O3. Hal ini ditunjukkan dengan nilai polarisasi remanensi ≥ 36 μC/ cm2 dan medan koersif ≥ 54 kV/cm. ========================================================================================================== Multiferroics have been an interesting topic in the development of science and technology, where Ferromagnetic (FM) coexist with Ferroelectric (FE). PbTiO3 is a perovskite type oxides material which has an important role in the application of electronics because of its dielectric, ferroelectric, piezoelectric and magnetic characteristics. At the moment, there is just a few research about Fe doped on PbTiO3, although this method could enhance its ferromagnetic characteristic so it becomes multiferroic. In this paper, the effects of doping variation and sintering temperature on PbTiO3 are examined. Creation of Pb(Ti, Fe)O3 nanoparticle is done by mixing Fe2O3 and PbTiO3, using mechanical alloying method. In order to examine the changes occurred in Fe addition, some test (XRD, SEM-EDX, Ferroelectricity and Susceptibility) are held. This paper uses Fe2O3 doping variations of 0.2, 0.3, 0.5 mol Fe contents and sintering temperatures of 950, 1000, 1050 ºC. PbTiO3 becomes multiferroic with the addition of Fe2O3. It is shown that polarization remnant value ≥ 36 μC/cm2 and coercive field ≥ 54 kV/cm.

Item Type: Thesis (Undergraduate)
Additional Information: RSMt 671.373 Fit p
Uncontrolled Keywords: Multiferoik, PbTiO3, Mechanical alloying, PbTiO3 yang didoping Fe
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Industrial Technology > Material & Metallurgical Engineering
Depositing User: - Taufiq Rahmanu
Date Deposited: 18 Dec 2019 02:29
Last Modified: 18 Dec 2019 02:29
URI: https://repository.its.ac.id/id/eprint/72415

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