CD Skripsi

Pengaruh Waktu Ball Milling Terhadap Sifat Magnetik Dari Nanopartikel Magnetik Pasir Pantai Sungai Suci Bengkulu

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ABSTRACT
Research on magnetic properties based on the hysteresis loop parameters of
magnetic nanoparticles has been carried out. The sample of this research was
collected from Sungai Suci Bengkulu Beach Sand. The magnetic and non
magnetic particles of beach sand samples were separated using Iron Sand
Separator (ISS) prior to the separation process between magnetic and nonmagnetic
particles using Neodynium Iron Boron (NdFeB) magnet. The product of
NdFeB was then milled using two stage Ball Milling method. Ball milling stage 1
was carried out using a combination of milling balls with a diameter of 0.5 cm,
0.7 cm, and 1.5 cm for 60 hours. This product was divided into 3 parts called BM
I A, BM I B and BM I C. These products were milled again using milling balls
with diameter of 1.5 cm with time variations of 20 hours, 40 hours, and 60 hours
and the products are called BM II A, BM II B and BM II C, respectively. The
number of milling balls used was 115 for a diameter of 0.5 cm, 100 for a
diameter of 0.7 cm, and 24 for a diameter of 1.5 cm. Magnetic susceptibility of
the samples was determined based on magnetic induction of selonoid (B0) and
total magnetic induction of selonoid (BT) using Pasco magnetic probe PS-2162.
The parameters of the solenoid are : number of turns = 2500,length = 10 cm, and
diameter = 3 cm. The results showed that the value of magnetic susceptibility of
the samples prepared using ball milling stage I is lower than that of ball milling
stage 2. The magnetic susceptibility of magnetic nanoparticles prepared using
ball milling stage 2 increases with increasing milling time. The magnetic
properties of the samples were measured using Vibrating Sample Magnetometer
(VSM). The results showed that in general, the saturation magnetization value
(Ms) reveals a variation values due to the presence of an impurity phase of
hematite (α - Fe2O3), remanent magnetization (Mr), coercivity (Hc), loop
squareness (Mr/Ms) and the loop area increases with the milling time. The results
of the hysteresis loop also show that the sample ferromagnetic properties with a
combination of Fe3O4 and Fe2O3 magnetite phase.
Keywords : beach sand, ball milling, magnetic susceptibility, loop hysteresis,
and Vibrating Sample Magnetometer (VSM)

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

03 01. 121 (0007)

Penerbit

Pekanbaru : Universitas Riau – FMIPA – Fisika., 2021

Deskripsi Fisik

ix, 79 hlm.; ill.: 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

03 01. 121 (0007)

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

FISIKA

Info Detail Spesifik

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Pernyataan Tanggungjawab

ELFITRA

Versi lain/terkait

Lampiran Berkas

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