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All Journal Jurnal Matematika & Sains Al-Manar: Jurnal Kajian Alquran dan Hadis
Mohamad Barmawi
Kelompok Keahlian Fisika Material Elektronik, Fakultas Matematika dan Ilmu Pengetahuan Alam, ITB
Religion Humanities Mathematics

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Optimization of Deposition Parameters for high Quality a-SiGe:H Thin Films Mursal Mursal; Ida Usman; Toto Winata; Sukirno Sukirno; Mohamad Barmawi
Jurnal Matematika & Sains Vol 11, No 2 (2006)
Publisher : Institut Teknologi Bandung

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Abstract

The effect of substrate temperature and rf power on the characteristics of a-SiGe:H alloys thin films has been investigated. The a-SiGe:H films made from a mixture of 10% silane (SiH4) and 10% germane (GeH4) gas diluted in hydrogen (H2) were grown on corning glass 7059 by using Plasma Enhanced Chemical Vapor Deposition (PECVD) method. The results showed that the deposition rate of a-SiGe:H films increased with the increasing of substrate temperature and rf power. The optical band gap (Eopt) of the films was improved by increasing of the rf power. The dependency of Eopt on the rf power is attributed to the change in Ge content in the films. The photosensitivity (σph/σd) of the films deposited at 200 °C and 175 °C slightly increased with increasing of rf power from 30-50 Watt. For the films deposited at 225 °C, the photosensitivity increased with increasing of rf power from 30-40 Watt, and relatively constant at rf power of 40-60 Watt.
Magnetoresistansi Divais Spintronika TiO2:Co/Si/TiO2:Co [Spintronics Magnetoresistance Device with TiO2:Co/Si/TiO2:Co] Edy Supriyanto; Agus Subagio; Hery Sutanto; Horasdia Saragih; Maman Budiman; Pepen Arifin; Sukirno Sukirno; Mohamad Barmawi
Jurnal Matematika & Sains Vol 12, No 1 (2007)
Publisher : Institut Teknologi Bandung

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TiO2:Co thin films were grown on Si substrates by Metalorganic Chemical Vapor Deposition (MOCVD) technique using titanium(IV)isopropoxide and tris(2,2,6,6-tetramethyl-3,5-heptanedionato)cobalt (III), and oxygen gas. The films grown at temperature of 450 oC were crystalline having a rutile structure with (002) orientation. Based on Energy Dispersive Spectroscope (EDS) analysis, Co content in TiO2 was 1.83% and films exhibit ferromagnetic properties at room temperature. Hysteresis curves obtained from Vibrating Sample Magnetometer (VSM) measurement have coercive and saturation magnetic fields of 130 Oe and 2.1 emu/cm3, respectively. Application of TiO2:Co as injection material in spintronic device with TiO2:Co/Si/TiO2:Co structure was investigated. The effect of polarized spin injection (magnetoresistance phenomenon) was observed from the current-voltage characteristics of the device.
Pengaruh Temperatur Penumbuhan terhadap Struktur Kristal dan Morfologi Film Tipis TiO2:Eu yang Ditumbuhkan dengan Metode MOCVD [The Effect of Growth Temperature on the Crystall Structure and Morphology of the Thin Film TiO2:Eu Grown with MOCVD Method] Edy Supriyanto; Goib Wiranto; Hery Sutanto; Agus Subagio; Mikrajuddin Abdullah; Maman Budiman; Pepen Arifin; Sukirno Sukirno; Mohamad Barmawi
Jurnal Matematika & Sains Vol 12, No 2 (2007)
Publisher : Institut Teknologi Bandung

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Thin film of TiO2:Eu had been grown on an n-type Si(100) substrate using Metalorganic Chemical Vapor Deposition (MOCVD) method with titanium (IV) isopropoxide [Ti{OCH(CH3)2}4] 99.99% and europium nitrate [Eu(NO3)3.6H2O] 99.99% as the metal organic precursors. The tetrahydrofuran (THF) was used as a solvent for the precursor. X-ray Diffraction (XRD) analysis showed that the TiO2:Eu thin film grown at temperature of 450 οC had crystal planes of rutile (200), rutile (002) and anatase (211), whereas film grown at 500 οC resulted in a crystal plane of rutile (002) with columnar grain and surface morphology relatively smooth. On the other hand, film grown at temperature of 550 οC has rutile (200) and rutile (002) planes. The surface morphology of thin films TiO2:Eu was affected by Eu atom concentration. The roughness of surface morphology increased with increasing Eu content and therefore the grains became larger. It can be concluded that the crystal structure and surface morphology properties of the films depended significantly on the substrate temperature.
Mengurai Makna Ta'awun pada Tradisi Jimpitan dalam Mengentas Kemiskinan; Studi Living al-Qur’an Mohamad Barmawi; Faisol Nasar bin Madi; H. Abdullah; Kurniawan Ramadhani.
Al-Manar: Jurnal Kajian Alquran dan Hadis Vol. 11 No. 1 (2025)
Publisher : UIN Kiai Haji Achmad Siddiq Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35719/amn.v11i1.145

Abstract

Al-Ta’awun dengan makna tolong menolong menjadi istilah penting dalam membangun kehidupan ideal bermasyarakat, terlebih manusia adalah makhluk sosial yang antar individu saling membutuhkan. Namun demikian, istilah agama menuntut untuk bisa diterjemahkan dengan bahasa sederhana dan dapat diterima oleh semua kalangan, sekaligus terealisasi dalam kehidupan nyata. Sedangkan jimpitan, merupakan istilah sederhana dalam memaknai al-ta’awun. Kemunculan istilah tersebut terinspirasi dari sebuah kondisi masyarakat yang membutuhkan dorongan untuk disadarkan terbukanya sikap saling memahami, mengerti, khususnya dalam membangun kehidupan layak antar masing-masing warga. Karya ini berusaha mengungkap pemaknaan ta’awun dalam praktek jimpitan sebagai bahasa penyederhanaan, dan juga berusaha mengurai pemaknaan tokoh masyaraankat pada ayat-ayat ta’awun, sebagai bentuk kontekstualisasi ayat pada praktek tolong menolong. Metode dan pendekatan yang digukan ialah living Qur’an. Penelitian ini berhasil menyimpulkan, bahwa jimpitan adalah bentuk kontekstualisasi atas ayat-ayat ta’awun, dengan bentuk praktek menumbuhkan kesadaran pentingnya bersedekah, dan memungut sedekah masyarakat dalam bentuk apapun, seperti uang, beras, padi, atau apapun yang bernilai ekonomis
Co-Authors A. Suhandi Agus Subagio Amiruddin Supu Budi Mulyanti Darsikin Darsikin Edi Supriyanto Edy Supriyanto Faisol Nasar bin Madi Fitri Suryani Arsyad Goib Wiranto H. Abdullah Heri Sutanto Hery Sutanto Horasdia Saragih Ida Usman Iqbal Iqbal Jusman Jusman Khairurrijal Khairurrijal Kurniawan Ramadhani. Maman Budiman Mikrajuddin Abdullah Mursal Mursal Pepen Arifin Sugianto - Sukirno Sukirno Syamsu Syamsu Toto Winata