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Mbantun Ginting
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Earth & Planetary Sciences Electrical & Electronics Engineering Energy Materials Science & Nanotechnology Mathematics Physics

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Journal : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

 1 
FABRIKASI DAN KARAKTERISASI MATERIAL Ba DENGAN MENGGUNAKAN DIFRAKSI SINAR-X0.9 Sr 0.1 TiO 3 ', Nurmairanti; Dewi, Rahmi; Ginting, Mbantun
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 2, No 1 (2015): Wisuda Februari 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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Abstract

This study is to determine the crystal structure of Ba0.9Sr0.1TiO3 with X-ray diffraction. The process of making the material Ba0.9Sr0.1TiO3 is mixing the powder material Barium Carbonate (BaCO3), Strontium Carbonate (SrCO3) and Titanium Dioxide (TiO2) which uses solid state reaction method with a ratio 0.9: 0.1: 1. Furthermore, the compounds are mixed and crushed using a mortal after it is heated at 4000C for 15 minutes and made the pellets by using Hydraulic Press. Pellets that have been made is heated for 1 hour with 600, 700 and 8000C and characterized using X-ray diffraction. The result is in the form of 2Ө angle as a function of intensity. The highest peak of the threesamples contained the hkl plane (1 1 0) at for 2Ө = 31.760 is 1045 (au) for temperature of 8000C,while the lowest peak contained the hkl plane (2 1 0) is the diffraction angle 2Ө = 51.240 with 113intensity (au) at a temperature of 6000C.
PENENTUAN DISTRIBUSI INDUKSI MAGNETIK YANG DITIMBULKAN OLEH BERBAGAI JENIS TELEPON SELULER DENGAN MENGGUNAKAN PROBE MAGNETIK PASCO Herianto '; Erwin '; Mbantun Ginting
Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Vol 1, No 2 (2014): Wisuda Oktober 2014
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam

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The distribution of induced magnetic field due to various kinds of cellular telephone has been investigated. The induced  magnetic  field was measured using  Magnetic  Probe Pasco in two directions  namely  horizontal  dan  vertical. In horizontal direction the induced  magnetic  field  was  measured  with the distance of 0,5 cm above the cellular telephone.  The result showed that the  widest  distribution of  magnetic  field  was generated by Sony Ericcson cellular telephone, while Samsung cellular  telephone generated the narrowest value of induced  magnetic  field.  Moreover,  the highest and lowest  value    induced  magnetic  field  were  generated  by Sony Ericcson and Sony were 2,4x10-3Tesla and 1,2x10-3Tesla respectively. In  vertical  direction,  the induced magnetic  field was reduced significantly  the  as measured  away from the cellular telephone. The value of magnetization  was  highest from Samsung cellular telephone and  the  lowest from Blackberry. The value of magnetization from Samsung and Blackberry was 9,26x10-5emu/cm3 and 7,16x10-5emu/cm3 , respectively.
Co-Authors ', Nurmairanti Defrianto Defrianto Erwin ' Febryadi Tulus M Herianto ' Juandi M ' M. Rasyid Ridho Rahmi Dewi Salomo '