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All Journal Jurnal Pendidikan Fisika dan Teknologi Jurnal Pendidikan Fisika dan Sains (JPFS)
Muhammad Ziddan Rachman
UIN Sunan Gunung Djati Bandung
Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Energy Physics

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Analysis of Boron Arsenide (BAs) Band Gap Energy Experimental Results vs DFT-Based Calculations Muhammad Dipa Pramudita Budiyana; Muhammad Ziddan Rachman; Pina Pitriana; Diah Mulhayatiah
Jurnal Pendidikan Fisika dan Teknologi (JPFT) Vol 12 No 1 (2026): January-June
Publisher : Department of Physics Education, Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpft.v12i1.10241

Abstract

This study aims to analyze the density of states (DOS) of boron arsenide (BAs) using two types of pseudopotentials, namely PBE ultrasoft and PBE-PAW, within the framework of density functional theory (DFT). The resulting DOS profiles show that both methods are able to capture the fundamental electronic characteristics of the material, with similar energy distribution patterns, although differences are observed in the detailed features of the curves. The PBE-PAW method produces smoother and more representative results near the atomic nucleus, whereas the PBE ultrasoft approach exhibits sharper and more fluctuating peaks. Around the Fermi energy level, the density of states approaches zero, indicating the semiconducting nature of the material. The estimated band gap is in the range of 1.5–2.5 eV, suggesting that BAs has potential applications in electronic devices, sensors, and photovoltaic technologies. Based on these findings, further studies are recommended to validate the band gap using hybrid functionals or the GW approximation, to investigate phonon behavior and thermal conductivity, and to optimize pseudopotential selection for high-precision electronic property calculations in future device-oriented applications.
Pengaruh Suhu Terhadap Tegangan Permukaan : Impikasi Praktikum Cookbook Muhammad Ziddan Rachman; Zahra Aulia Alifa; Nawallaili Musyayaroh; Adam Malik
Jurnal Pendidikan Fisika dan Sains (JPFS) Vol 7 No 2 (2024): September
Publisher : Pendidikan Fisika, FKIP, Universitas Nahdlatul Ulama Cirebon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52188/jpfs.v7i2.760

Abstract

Surface tension is a critical physical property in various applications, yet the understanding of temperature effects on surface tension remains limited. This study aims to investigate the influence of temperature on the surface tension of water through laboratory experiments. The method includes measuring surface tension in hot and cold water using simple equipment. The results show significant variation in surface tension, with hot water exhibiting higher surface tension compared to cold water under certain conditions. These findings contradict the theory that increasing temperature should reduce surface tension. Factors such as measurement errors and water contamination likely affected the results. This study highlights the importance of developing stricter methodologies for surface tension measurements and provides essential insights for practical and educational applications.
Co-Authors Adam Malik Muhammad Dipa Pramudita Budiyana Nawallaili Musyayaroh Pina Pitriana Zahra Aulia Alifa