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All Journal Jurnal Sains Materi Indonesia Komunikasi Fisika Indonesia Journal of Aceh Physics Society
Erwin Amiruddin
Jurusan Fisika, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Riau, Simpang Baru, Pekanbaru 28293
Earth & Planetary Sciences Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Physics

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Journal : Komunikasi Fisika Indonesia

 1 
PENENTUAN NILAI SUSEPTIBILITAS DAN UKURAN PARTIKEL MAGNETIK PASIR ALAM LOGAS KABUPATEN KUANTAN SINGINGI MENGGUNAKAN VARIASI UKURAN BALL MILLING Azura Royka; Erwin Amiruddin
Komunikasi Fisika Indonesia Vol 18, No 1 (2021)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.18.1.42-47

Abstract

Magnetic properties and morphology of natural sand has been carried out in Logas Village, Kuantan Singingi Regency have been determined. Iron sand samples were processed using iron sand separator (ISS) prior to ball milling for separating between magnetic and non magnetic particles. The product of ISS was milled for 90 hours using ball milling first step method with milling ball size of 1.5 cm. Themagnetic and non-magnetic particles of ball milling products were separated  using Neodymium Iron Boron (NdFeB) magnet. The product of ball milling first step then was milled for another 30 hours with milling ball size of 0.5 cm and 0.7 cm. The susceptibility and mass susceptibility were determined based on magnetic induction of a selenoid measured using Probe Magnetic Pasco PS-2162. The composition of Logas natural sand was measured using x-ray fluorescence spectroscopy (XRF). The morphology of the magnetic particles are determined using scanning electron microscope (SEM). The results showed that the particle size of natural sand for 90 hours + 30 hours milling displays the particle sizes from 100 µm to 800 µm. As for the particle size of the samples synthesized with 90 hours + 30 hours for 0.7 cm milling ball size, the particles are almost evenly distributed, which is about 5 µm to 100 µm. The content of Fe and Ti in the sample has increased while for Si has decreased. Mass susceptibility increases with increasing ball milling time and ball milling size.
ANALISA PERUBAHAN SUSEPTIBILITAS MAGNETIK DAN KOMPOSISI PARTIKEL PASIR ALAM SUNGAI ROKAN SEBAGAI FUNGSI KECEPATAN PUTAR TABUNG BALL MILLING Salomo Sinuraya; Erwin Amiruddin; Diah Nurrohmah; Tri Wulandari
Komunikasi Fisika Indonesia Vol 18, No 3 (2021)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.18.3.225-229

Abstract

Telah dilakukan penelitian tentang suseptibilitas magnetik dan komposisi partikel magnetik pasir alam Sungai Rokan, Provinsi Riau sebagai fungsi kecepatan putar tabung ball milling. Sampel dikeringkan terlebih dahulu dibawah sinar matahari sebelum dilakukan pemisahan antara partikel magnetik dengan partikel non magnetik menggunakan Iron Sand Separator, hasil ini disebut dengan produk ISS. Produk ISS di milling dengan kecepatan putaran tabung milling yang berbeda yaitu 100, 150, and 200 rpm dengan bola besi berdiameter 2,0 cm. Produk yang diperoleh dari ball milling kemudian dipisahkan partikel magnetik dan non magnetik  menggunakan magnet Neodimium Iron Boron (NdFeb), hasil ini disebut dengan produk ball milling(produk BM). Hasil penelitian ini menunjukkan bahwa suseptibilitas magnetik produk ISS memiliki nilai 1.930,771 × 10-5, sedangkan nilai suseptibilitas magnetic produk ball milling meningkat seiring dengan kenaikan kecepatan putar tabung, yaitu 28.188,141 × 10-5, 31.136,137 × 10-,5 and 33.123,550 × 10-5 untuk kecepatan putar 100, 150, and 200 rpm. Hasil identifikasi XRF menunjukkan unsur magnetik  Fe meningkat dari 13,777% menjadi 27,064%, sedangkan unsur non magnetik Si mengalami penurunan dari 58,401% menjadi 42,920%.
SINTESIS DAN KARAKTERISASI NANOPARTIKEL Fe2O3 DARI PASIR ALAM DESA LOGAS KABUPATEN KUANTAN SINGINGI Meilan Sihombing; Erwin Amiruddin
Komunikasi Fisika Indonesia Vol 17, No 2 (2020)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.17.2.68-73

Abstract

Determination of magnetic and structural properties of natural sand from Logas Village, Kuantan Singingi have been carried out using a magnetic Probe Pasco PS-2162 and X-Ray Diffraction methode. Samples were synthesized using multi step ball milling methode for 90 and 90+30 hours. Results show that the magneticsuceptibility increased with increasing of ball milling time, from 90 hours to 90+30 hours. This magnetic suceptibility within the interval (46-80000) x 10-8 m3/kg which is the interval of Ilminite mineral (FeTiO3; Antiferromagnetic). X-Ray Fluorescence result showed that the composition of Fe and Ti increased after milled for 90+30 hours, while other element like Si decreased. The XRD result confirmed that the phase of the sample structure is Hematite (α-Fe2O3). However, some other phases including SiO2 and FeTiO3 are observed in diffraction pattern. This indicates that the sample is not purely hematite.
ANALISA PERUBAHAN SUSEPTIBILITAS DAN KOMPOSISI SERTA UKURAN PARTIKEL OKSIDA BESI SEBAGAI FUNGSI KECEPATAN PUTARAN TABUNG BALL MILLING Indah Nurhidayah; Salomo Sinuraya; Erwin Amiruddin; Rahmondia Nanda Setiadi
Komunikasi Fisika Indonesia Vol 20, No 1 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.1.75-82

Abstract

The magnetic susceptibility, composition and particle size of natural sand has been carried out in Rokan River, Riau Province regency have been determined. Iron sand samples were processed using an iron sand separator (ISS). The magnetic and non-magnetic particles of ISS products were separated using neodymium iron boron (NdFeB) magnet. The product of ball milling (BM) with tube rotational speed functions of 100 rpm, 150 rpm, 200 rpm was milled for 80 hours with BM size of 2 cm. The magnetic susceptibility were determined based on magnetic induction of a selenoid measured using Probe Magnetic Pasco PS-2162. The composition of Rokan river natural sand was measured using x-ray fluorescence. The magnetic particles are determined using scanning electron microscope. The results showed that the magnetic susceptibility increases with increasing BM tube rotational speed 28,138.79 × 10-5 (100 rpm), 29,374.88 × 10-5 (150 rpm), and 30,955.32 × 10-5 (200 rpm). The composition of Fe in the sample has increased from 32.686% to 35,865%, while for Si has decreased from 38.604% to 33.729%. The particle size of natural sand for 80 hours milling displays the particle sizes from  883.4 for 100 rpm to 655.81 for the smallest particle size of the samples synthesized with 200 rpm.
ANALlSA KECEPATAN PUTARAN TABUNG BALL MlLLlNG TERHADAP SUSEPTlBILlTAS MAGNETlK DAN KOMPOSlSl SERTA UKURAN PARTlKEL OKSlDA BESl PASlR ALAM SUNGAl ROKAN Tasyha Dwi Safira; Salomo Sinuraya; Erwin Amiruddin; Rahmondia Nanda Setiadi
Komunikasi Fisika Indonesia Vol 20, No 1 (2023)
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.1.83-90

Abstract

Magnetic susceptibility and composition of magnetic particles from the natural sand iron oxide, at Rokan River in Riau Province as a function of the rotating speed of ball milling tubes. Samples are separated the magnetic particles from non-magnetic particles using iron sand separator (ISS), called the ISS product. Refinement using neodymium iron boron magnet (NdFeB). The ball milling process is carried out for 80 hours using combined iron balls with diameter of 0.7 cm (48 balls), 1.5 cm (24 balls), and 2 cm (16 balls) with variety milling tube rotational speeds of 100, 150, and 200 rpm. The calculation of the magnetic susceptibility value is carried out based on the values of B0 and BT, while the composition of the sample by X-ray fluorescence (XRF) and the magnetic particle size of the sample is classified by scanning electron microscope. The result of the study indicates that the magnetic susceptibility of the ISS product has a value 2,895.99 × 10-5, while the value of the magnetic susceptibility of ball milling product increases with the increase in the rotating speed of the tube, namely 27,997.52 × 10-5, 29,975.27 × 10-5, and 30,690.44 × 10-5. XRF results show that the magnetic element Fe increased from 32.069% to 39.645%, while the non-magnetic element Si decreased from 31.127% to 29.187%. The average particle size obtained was smaller as the rotational speed of the milling tube increased, namely 679.72 nm, 619.14 nm, and 568.94 nm.
PENGARUH DOPING CHROMIUM TERHADAP SIFAT MAGNETIK NANOPARTIKEL OKSIDA BESI Indah Tamara Sitorus; Erwin Amiruddin; Juandi Muhammad; Erman Taer
Indonesian Physics Communication Vol 20, No 3 (2023): IN PROGRESS
Publisher : Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jkfi.20.3.%p

Abstract

The purpose of this study is to determine the magnetic properties expressed in the hysteresis loop as well as the morphology of iron sand iron oxide nanoparticles of Logas Village, natural sand, which were doped with Chromium. The separation between magnetic and non-magnetic particles was carried out using the strong magnet Neodymium Iron Boron (NdFeB). Magnetic nanoparticle preparation was carried out by ball milling method for 100 hours which is called BM3 The BM 3 product was divided into three parts with the same amount of weight namely  BM 3A, BM 3B and BM 3C. These products was doped with Chromium with concentrations of 0, 10, and 20 (wt%) using ball milling for 20 hours. Magnetic properties were tested using a Vibrating Sample Magnetometer (VSM) and nanoparticle morphology with a Scanning Electron Microscope (SEM). The magnetic properties of the samples were studied based on Loop Hysteresis showed that saturation magnetization (Ms), remanent magnetization (Mr), Coercivity (Hc), Loop Squareness (S), and loop area (A) decreased along with the addition of chromium doping concentration in the sample. The results of the Scanning Electron Microscope (SEM) test showed that as the doping concentration was added to the sample the particle size became smaller, namely 1.316 μm, 1.308 μm, 0.856 μm.
Co-Authors Azura Royka Defrianto Defrianto Diah Nurrohmah Erman Taer Indah Nurhidayah Indah Tamara Sitorus Isna’im Isna’im Juandi Muhammad Krisman Krisman Linda Wahyuni Meilan Sihombing Neti Satria Nita Jesika Rahmondia Nanda Setiadi Saktioto Saktioto Salomo Sinuraya Salomo Sinuraya Salomo Sinuraya Sudirman Sudirman Suhaivi Hamdan Suhaivi Hamdan Sunit Hendrana Syakbaniah Syakbaniah Tasyha Dwi Safira Tri Susilawati Tri Wulandari Yusmeri Yusmeri