Sintesis dan Karakterisasi XRD Multiferroik BiFeO3 Didoping Pb

Tahta Amrillah, Malik Anjelh Baqiya, Darminto Darminto
Submission Date: 2012-07-27 12:06:44
Accepted Date: 2013-01-17 08:28:45

Abstract


Sintesis multiferoik BiFeO3 didoping Pb telah dilakukan dengan metode Pencampuran basah (liquid mixing), menggunakan Fe murni dan Fe2O3 hasil sintesis dari pasir besi. Dalam penelitian ini digunakan variasi konsentrasi doping Pb x=0,25; x=0,5; variasi suhu kalsinasi dan variasi holding time. Sample dikarakterisasi dengan XRD (X-ray Difraction) dan magnetic susceptibility balance. Sampel variasi konsentrasi doping Pb x=0,25 ditemukan fasa pengotor BFO sekunder sedangkan sampel x=0,5 ditemukan fasa pengotor BFO sekunder dan fasa bahan penyusun. Dekomposisi fasa BiFeO3 menjadi fasa sekunder BFO meningkat dengan meningkatnya suhu kalsinasi dan holding time. Doping Pb memperbesar kemungkinan terbentuknya fasa BiFeO3. Konsentrasi doping Pb x=0,5 dapat meningkatkan prosentase fraksi volume BiFeO3sebesar ~7% dan dapat menurunkan prosentase fraksi volume fasa BFO sekunder sebesar ~15%, namun dekomposisi fasa menjadi fasa bahan penyusun meningkat ~43%. Ukuran kristal BiFeO3 sebesar ~29 nm sampai ~112 nm. Sampel memiliki nilai χ berkisar 1,69x10-7.


Keywords


Liquid mixing; XRD; magnetic susceptibility balance; konsentrasi doping

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