PENGARUH DOPING TEMBAGA TERHADAP NILAI SUSEPTIBILITAS MAGNETIK DAN MORFOLOGI NANOPARTIKEL α-Fe2O3 (HEMATITE) DARI PASIR ALAM LOGAS
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Date
2022-03
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Elfitra
Abstract
The magnetic susceptibility and morphological properties of iron oxide
nanoparticles of natural sand from Logas Village, Kuantan Singingi Regency,
Riau Province prepared using ball milling method has been studied. First, the ascollected
sand was processed using an iron sand separator (ISS) and followed by
NdFeB magnet in order to separate between iron and non iron oxide particles. The
product of NdFeB was milled using ball milling for 3 stages and the final result
was called the BM3 product. The BM3 product was divided into 5 parts with the
same amount of weight and each of them was doped using copper with a
concentration of 0 wt.%, 5 wt.%, 10 wt.%, 15 wt.% and 20 wt.% then labelled as
BM4A, BM4B, BM4C, BM4D and BM4E, respectively. The BM4A, BM4B and
BM4C products were selected to be characterized using Scanning Electron
Microscope (SEM). Magnetic susceptibility values of the samples were
determined based on magnetic induction (B0) and total magnetic induction (Bt) of
a solenoid measured using a PASCO type probe. The results of SEM analysis
show that the particle size decreases from 78 , 71 dan 67 with
increasing copper concentration from 0 wt.%, 5 wt.% dan 10 wt.%, respectively.
The results showed that the susceptibility decreases with increasing doping
concentration. The maximum and minimum magnetic susceptibility were for
sample 0 wt.%, 5 wt.%, 10 wt.%, 15 wt.% and 20 wt.% and respectively
4395,76382 x 10-5, 4323,22646 x 10-5, 4265,19658 x 10-5, 4207,16669 x 10-5 dan
4134,62933 x 10-5.
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Keywords
Natural sand, ball milling, magnetic susceptibility, morphological properties, and copper doping
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