Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics最新文献_第2页

Analisis Struktur Kristal dan Sifat Kemagnetan Material Komposit Perovskite Manganit Nd0,6Sr0,4MnO3/ZnO 晶体结构和材料特性分析。。

Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Pub Date : 2020-08-04 DOI: 10.15408/fiziya.v3i1.16158

Muhammad Umar Faruqi, Arif Tjahjono, Sitti Ahmiatri Saptari

{"title":"Analisis Struktur Kristal dan Sifat Kemagnetan Material Komposit Perovskite Manganit Nd0,6Sr0,4MnO3/ZnO","authors":"Muhammad Umar Faruqi, Arif Tjahjono, Sitti Ahmiatri Saptari","doi":"10.15408/fiziya.v3i1.16158","DOIUrl":"https://doi.org/10.15408/fiziya.v3i1.16158","url":null,"abstract":"AbstrakPerovskite manganit merupakan salah satu rekayasa material yang dapat menghasilkan perubahan fenomena fisika. Telah berhasil dibuat material berbasis perovskite manganit Nd0,6Sr0,4MnO3 menggunakan metode sol-gel¬ dan dikompositkan dengan ZnO (Nd0,6Sr0,4MnO3)1-x/(ZnO)x (x = 0; 0,3; 0,5; 0,7). Hasil pengujian X-Ray Diffraction menunjukkan sampel Nd0,6Sr0,4MnO3 berstruktur tunggal ortorombik dan sampel ZnO pada (Nd0,6Sr0,4MnO3)0,5/(ZnO)0,5 berstruktur heksagonal tunggal. Hasil pengujian Field Emission Scanning Electron Microscope menunjukkan sampel telah homogen dengan rata-rata ukuran butir 0,188 μm. Hasil pengujian Vibrating Sample Magnetometer menunjukkan sampel (Nd0,6Sr0,4MnO3)0,5/(ZnO)0,5 bersifat paramagnetik dan mengalami penurunan sifat magnetik juga suseptibilitas seiring dengan penambahan konsentrasi material ZnO. AbstractPerovskite manganite is one of the manipulation materials that can produce changes in physical phenomena. Perovskite material Nd0,6Sr0,4MnO3 has been made with the sol-gel method and then composites with ZnO (Nd0.6Sr0.4MnO3)1-x/(ZnO)x (x = 0; 0.3; 0.5, 0, 7). The results of the X-Ray Diffraction characterization test showed samples of Nd0,6Sr0,4MnO3 and ZnO each with a single orthorhombic phase with a Pnma space group and a single hexagonal with a P63mc space group. The results of the Field Emission Scanning Electron Microscope characterization test showed that the samples were homogeneous with an average grain size of 0,188 μm. Vibrating Sample Magnetometer characterization test results show composite material (Nd0,6Sr0,4MnO3)1-x/(ZnO)x are paramagnetic and the increasing composition of ZnO material decreases the magnetization and susceptibility value of sample ","PeriodicalId":243173,"journal":{"name":"Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129913512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Identification of Mineral Potential in Galang District Tolitoli Regency Using the Method of Resistance and Induced Polarization 利用电阻和感应极化法识别加朗地区托立托利县的矿产潜力

Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Pub Date : 2019-12-31 DOI: 10.15408/fiziya.v2i2.12589

A. Wijaya, T. Zera, N. Hidayat

{"title":"Identification of Mineral Potential in Galang District Tolitoli Regency Using the Method of Resistance and Induced Polarization","authors":"A. Wijaya, T. Zera, N. Hidayat","doi":"10.15408/fiziya.v2i2.12589","DOIUrl":"https://doi.org/10.15408/fiziya.v2i2.12589","url":null,"abstract":"Geologically, the province of Central Sulawesi is composed of various types of rocks, both in the form of igneous, sedimentary and metamorphic rocks. Regarding Central Sulawesi Province, mineral resources both metal and non-metal are quite varied. Increasing demand and demand for minerals, both metals, and non-metals. Research conducted to study the mineral potential in one of the regencies in Central Sulawesi Province. This research was conducted in Galang Sub-district, Tolitoli Regency, and Central Sulawesi Province by using the resistivity method and the Induced Polarization (IP) method with the Wenner-Schlumberger arrangement consisting of eight lines. The IP method is very accurate to discuss the potential of minerals that are below the surface. The inversion process does data processing in order to obtain the actual form of resistivity and chargeability modeling. Based on the modeling, the mineral potential in Galang Sub-district, Tolitoli Regency, Central Sulawesi Province is mostly found in all trajectories namely lane 01; 02; 04; 05; 05; 06; 07. Which is marked by a very high chargeability value between 300 msec - 500 msec. The research area also discusses granite and andesite, which have high resistivity values, between 2000 Ωm – 400000 Ωm.","PeriodicalId":243173,"journal":{"name":"Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125233400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Analisis Seismisitas Berdasarkan Data Gempa Bumi Periode 1958-2018 Menggunakan b-Value Pada Daerah Selatan Jawa Barat dan Banten 基于 1958-2018 年地震数据，使用 b 值分析西爪哇和万丹南部地区的地震活动性

Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Pub Date : 2019-06-22 DOI: 10.15408/FIZIYA.V2I1.10482

Ilman Luthfi Hilmi, S. Sutrisno, D. Sunarya

{"title":"Analisis Seismisitas Berdasarkan Data Gempa Bumi Periode 1958-2018 Menggunakan b-Value Pada Daerah Selatan Jawa Barat dan Banten","authors":"Ilman Luthfi Hilmi, S. Sutrisno, D. Sunarya","doi":"10.15408/FIZIYA.V2I1.10482","DOIUrl":"https://doi.org/10.15408/FIZIYA.V2I1.10482","url":null,"abstract":"The area of West Java and Banten, especially is Southern is one of the areas prone to earthquakes, caused by the fact that the area is part of the ring of fire path and the presence of faults that are still active faults, such as the Cimandiri Fault, the Baribis Fault and the Lembang Fault. The purpose of this study is to determine the level of seismic activity, the fragility of the rocks and the level of the return period to make earthquake resistant buildings. The seismotechnical parameters of a region can be calculated using the Frequency-Magnitude relationship with the Guttenberg-Rithcher formulation, namely by using the Maximum Likelihood method. Based on the results of the research obtained from the combined data of USGS and BMKG, the magnitude of the 4 SR and the depths of 0-300 km. Based on the analysis and distribution of seismicity, it was found that the higher of the frequency the smaller earthquake magnitude is obtained. The results of the seismotechnical parameters provide variations of the b-value in South West Java and Banten around 0.95-1.45, with the highest value in the South of Pandeglang Regency (1.35-1.45) and the lowest in Tasikmalaya District (0.95-1.05). Variations of the a-values of an area around 6.5-9, while the highest value is in the South of Pandeglang Regency (8.5-9) and the lowest in Tasikmalaya Regency (6.5-7). The Seismicity Index is 0.632 and the Seismicity of the largest earthquakes is 0.004. Probability is at a time interval of 20 years with value as follows P (7.20) = 8%; P (7.40) = 15%; P (7.60); 21%. While variation of the return period are with variations of 5 SR = 1-4 years, 6 SR = 15-55 years and 7 SR = 150-550 years","PeriodicalId":243173,"journal":{"name":"Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134061746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Analisis Respon Sistem Kendali LQR (Linear Quadratic Regulator) Pada Simulasi Gimbal Kamera Dua Sumbu 分析双轴万向节模拟的LQR控制系统反应

Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Pub Date : 2019-06-22 DOI: 10.15408/FIZIYA.V2I1.11178

Qalisha Putri Syahna, Elvan Yuniarti, E. Kurniawan

{"title":"Analisis Respon Sistem Kendali LQR (Linear Quadratic Regulator) Pada Simulasi Gimbal Kamera Dua Sumbu","authors":"Qalisha Putri Syahna, Elvan Yuniarti, E. Kurniawan","doi":"10.15408/FIZIYA.V2I1.11178","DOIUrl":"https://doi.org/10.15408/FIZIYA.V2I1.11178","url":null,"abstract":"Research has been conducted to analyzed the responses of the two axis camera gimbal control system for pitch and roll direction using the Linear Quadratic Regulator (LQR) control system. It focused on the effect from the value of gain Q in calculation of the LQR. The system output was plotted into a step signal so it will be analyzed with transient response method and plotted into sinusoidal signals to find the amplitude value along with the amplitude time. For comparison, the PID control system with the auto-tuning method was also used in this study. It has been done in order to find out whether the LQR control system is more appropriate to use in the two axis camera gimbal system or not. The result from the analysis of the variation of the Q value given at both angles is that the system runs stable when the value of P= 4 for roll angle and P= 6 for pitch angle. For the effect from value of gain Q on the whole system is it will make the output significally changed when the P=1-10. While the results of the comparison can prove that the LQR control system has a better system responses.","PeriodicalId":243173,"journal":{"name":"Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114832740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Pemodelan 2-Dimensi dan 3-Dimensi Penyebaran Bijih Besi Menggunakan Data Resistivitas dan IP di Daerah “A” Provinsi Kalimantan Selatan 在南加里曼丹省的A区利用电阻率和IP数据进行二维和三维建模

Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Pub Date : 2019-06-22 DOI: 10.15408/FIZIYA.V2I1.11175

Siva Dwi Harum, Tati Zera, Dwi Haryanto

{"title":"Pemodelan 2-Dimensi dan 3-Dimensi Penyebaran Bijih Besi Menggunakan Data Resistivitas dan IP di Daerah “A” Provinsi Kalimantan Selatan","authors":"Siva Dwi Harum, Tati Zera, Dwi Haryanto","doi":"10.15408/FIZIYA.V2I1.11175","DOIUrl":"https://doi.org/10.15408/FIZIYA.V2I1.11175","url":null,"abstract":"Sulawesi Island is composed of complex tectonic arrangements. Most earthquake activities in Sulawesi are affected by the Palu - Koro Fault and Matano Fault. Palu - Koro Fault and Matano Fault are one of the faults in Central Sulawesi. Active movement of the fault results in high earthquake activity in the region of Central Sulawesi and its surroundings. This makes the importance of earthquake parameters in Central Sulawesi and surrounding areas. One of the efforts to find out earthquake parameter information accurately is to relocate. The purpose of this study was to conduct hypocenter earthquake relocation and determine the 1-D velocity structure of P waves in Central and surrounding areas using the Coupled Velocity - Hypocenter method with Velest 3.3 software. The data used are tectonic earthquake data from November 2009 to March 2018, data recording stations, and initial speed data. The results of data processing using the Velest 3.3 software are that some of the results of the relocation are close to fault, the final Vp at a depth of 9 km is slower than the initial Vp, the correction of the station obtained in this calculation is in the interval -0.81 to +0.54. ","PeriodicalId":243173,"journal":{"name":"Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114947711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Studi Komputasi Sifat Elektronik dan Sifat Optik Fotoelektroda Titanium Dioksida (TiO2) pada Fasa Anatase dan Rutile

Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Pub Date : 2019-06-22 DOI: 10.15408/FIZIYA.V2I1.11116

Elvan Yuniarti

{"title":"Studi Komputasi Sifat Elektronik dan Sifat Optik Fotoelektroda Titanium Dioksida (TiO2) pada Fasa Anatase dan Rutile","authors":"Elvan Yuniarti","doi":"10.15408/FIZIYA.V2I1.11116","DOIUrl":"https://doi.org/10.15408/FIZIYA.V2I1.11116","url":null,"abstract":"This research focuses on photoelectric Titanium Dioxide (TiO2) as a tool for Sensitive Solar Cell Dyes (DSSC). Anatase and rutile phase. some of the things studied were: crystal structure, band structure, structural structure, photoelectric optical properties of TiO2. The method used in this study is a calculation using the DFT theory and quantum expresso software. The TiO2 cell unit has the optimal shape for the pure antase TiO2 model which has a parameter a = b 3.785 units, c = 9.514 units, α = β = γ = 90O. The average T-O bond length is 1,966 barrels. This phase has a triclinic lattice type with group space P1 (1) which has a volume unit of 136.2991 A3. The Rutile phase has a parameter a = b = 4.5593 with c = 2,958 stars with α = β = γ = 90O. The average T-O bond length is 2.77 barrels. This phase has a Triclinic lattice type with a space group P1 (1) with a volume unit of 52.44233 A3. The anatase phase of TiO2 has indirect characteristics, namely M and Г. coordinate. Based on the calculation of the large bandgap obtained at 3.2 eV. This is in accordance with the data experiment. The energy of the band tape must be greater than the minimum energy needed for the redox reaction in the dye. While the characteristics of the ribbon emphasize the value of the absorption coefficient in light and the rate of electron recombination. Materials with direct band gab have high combination coefficients but with high combination levels. This greatly influences the DSSC efficiency value. TIO2 Rutile phase has a direct property of 3.5 eV for potential Hubbard energy U + 7. This value is closed to the experiment result.","PeriodicalId":243173,"journal":{"name":"Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127752684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Studi Pemodelan Distribusi Konduktivitas Bawah Permukaan 3-D Berbasis Data Resistivitas Menggunakan Program Aplikasi DCIP3D Versi 2.1 基于电阻数据的三维表面导电性分布研究采用了DCIP3D版本2.1的应用程序

Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Pub Date : 2019-06-22 DOI: 10.15408/FIZIYA.V2I1.10544

Nadhia Fairuz Syafira, Sitti Ahmiatri Saptari, Adhika Junara Karunianto

{"title":"Studi Pemodelan Distribusi Konduktivitas Bawah Permukaan 3-D Berbasis Data Resistivitas Menggunakan Program Aplikasi DCIP3D Versi 2.1","authors":"Nadhia Fairuz Syafira, Sitti Ahmiatri Saptari, Adhika Junara Karunianto","doi":"10.15408/FIZIYA.V2I1.10544","DOIUrl":"https://doi.org/10.15408/FIZIYA.V2I1.10544","url":null,"abstract":"Human needs will increase in various aspects, including the need for content in the earth. In describing the distribution of physical properties beneath the earth's surface, 3-D modeling is the best way to find out the details of the subsurface content of the earth. To facilitate the making of 3-D models from the earth, the DCIP3D application program is used. DCIP3D develops a series of inversion algorithms to restore 3-D conductivity models. The research was conducted to optimize the use of DCIP3D version 2.1. The data used are secondary and synthetic data. Secondary data is resistivity geoelectric data consisting of four line of the results of the PTBGN-BATAN survey in the Ahu Mamuju, West Sulawesi, 2017. Data processing is done by making mesh cell size which is a discritization of the earth model. The variation of the mesh core size is done (5 × 5 × 5) m, (10 × 10 × 10) m and (15 × 15 × 15) m. By completing various input files for DCIP3D, the 3-D subsurface conductivity model was successfully restored. Adding topographic values to the model causes the model to look even more real. The best model that describes the conductivity of the secondary data survey area is a model with a core cell (10 × 10 × 10) m because it corresponds to the distance between the electrodes used during data acquisition.","PeriodicalId":243173,"journal":{"name":"Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics","volume":"06 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129283134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Relokasi Hiposenter Gempa Bumi dan Model Struktur Kecepatan 1 Dimensi Gelombang P dengan Menggunakan Metode Coupled Velocity – Hypocenter di Daerah Sulawesi Tengah dan Sekitarnya 地震冲击下的重新定位和P -维波速度结构模型使用的是对外部速度——中苏拉威西和周边地区的高压电中心

Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Pub Date : 2019-06-22 DOI: 10.15408/FIZIYA.V2I1.9514

Lusti Nur Azizah, Arif Tjahjono, Agung Sabtaji

{"title":"Relokasi Hiposenter Gempa Bumi dan Model Struktur Kecepatan 1 Dimensi Gelombang P dengan Menggunakan Metode Coupled Velocity – Hypocenter di Daerah Sulawesi Tengah dan Sekitarnya","authors":"Lusti Nur Azizah, Arif Tjahjono, Agung Sabtaji","doi":"10.15408/FIZIYA.V2I1.9514","DOIUrl":"https://doi.org/10.15408/FIZIYA.V2I1.9514","url":null,"abstract":"Sulawesi Island is composed of complex tectonic arrangements. Most earthquake activities in Sulawesi are affected by the Palu - Koro Fault and Matano Fault. Palu - Koro Fault and Matano Fault are one of the faults in Central Sulawesi. Active movement of the fault results in high earthquake activity in the region of Central Sulawesi and its surroundings. This makes the importance of earthquake parameters in Central Sulawesi and surrounding areas. One of the efforts to find out earthquake parameter information accurately is to relocate. The purpose of this study was to conduct hypocenter earthquake relocation and determine the 1-D velocity structure of P waves in Central and surrounding areas using the Coupled Velocity - Hypocenter method with Velest 3.3 software. The data used are tectonic earthquake data from November 2009 to March 2018, data recording stations, and initial speed data. The results of data processing using the Velest 3.3 software are that some of the results of the relocation are close to fault, the final Vp at a depth of 9 km is slower than the initial Vp, the correction of the station obtained in this calculation is in the interval -0.81 to +0.54.","PeriodicalId":243173,"journal":{"name":"Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117282482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Pembuatan dan Karakterisasi Keramik Magnet BaFe12O19 dengan Variasi Waktu Milling dan Temperatur Sintering 巴菲12o19磁性陶瓷的制造和特性，其时间和蒸煮温度均有变化

Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Pub Date : 2019-06-22 DOI: 10.15408/FIZIYA.V2I1.10887

Syaiful Izzuddin Salam, E. Sanjaya, Muljadi Muljadi

{"title":"Pembuatan dan Karakterisasi Keramik Magnet BaFe12O19 dengan Variasi Waktu Milling dan Temperatur Sintering","authors":"Syaiful Izzuddin Salam, E. Sanjaya, Muljadi Muljadi","doi":"10.15408/FIZIYA.V2I1.10887","DOIUrl":"https://doi.org/10.15408/FIZIYA.V2I1.10887","url":null,"abstract":"In this study, we made ceramic magnet of barium hexaferrite (BaFe12O19) with variation of milling time and sintering temperature by powder metallurgy method. First, barium hexaferrite powder mashed with a rotary ball mill. Milling is done with medium of water (wet milling) for 4 hours and 12 hours. Then, the sample is dried for 24 hours and printed with a load of 8 tons for 1 minute. Then, the pellet-shaped sample sintered at a temperature of 1100 °C and 1200 °C with a holding time of 1 hour. The density and porosity measurements were carried out using the Archimedes Method, phase analysis with XRD, and magnetic flux density using gaussmeter. The highest density were found in samples that were milled for 12 hours and sintered at the temperature of 1200 °C ie 4.495 gr/cm3. In that sample also obtained the lowest porosity 0.89%. From XRD analysis, we knew that hematite (Fe2O3) was found as impurity phase. From gaussmeter, the samples with the highest magnetic flux density were found in samples that were milled for 4 hours and sintered at a temperature of 1200 °C ie 410.3 G.","PeriodicalId":243173,"journal":{"name":"Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133855333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Studi Teoritis Pembentukan Momen Magnetik pada Alloy half-Heusler Mn2Ge

Al-Fiziya: Journal of Materials Science, Geophysics, Instrumentation and Theoretical Physics Pub Date : 2019-06-22 DOI: 10.15408/FIZIYA.V2I1.11057

Anugrah Azhar, Muhammad Aziz Majidi

引用次数: 0