Husein Irzaman

Bogor Agricultural University

Irzaman was born in Jakarta, Indonesia, in 1963. He received the B.S. in agro-meteorology from Bogor Agricultural University, in 1988, M.S. degrees in physics from University of Indonesia, in 1998, and Ph.D. degree in physics from Bandung Technology University, Bandung, in 2005. Since 1997, he is a resident lecturer of Physics Physics Department, Bogor Agricultural University. From 2007 to 2011, He is Physics Head of Department, Bogor Agricultural University. From 2011, He is Head of Material Physics Laboratory, Physics Department, Bogor Agricultural University. He is the author of 16 Scopus indexed journal articles and a book chapter. His research interests include sensors engineering, semiconductor device physics and new material characterization, and ferroelectrics. From 2012, He is a technical member of Alternative Energy Division, Ministry of Energy and Mineral Resources, Indonesia.

1books edited

3chapters authored

Latest work with IntechOpen by Husein Irzaman

Ferroelectricity is a symptom of inevitable electrical polarization changes in materials without external electric field interference. Ferroelectricity is a phenomenon exhibited by crystals with a spontaneous polarization and hysteresis effects associated with dielectric changes when an electric field is given. Our fascination with ferroelectricity is in recognition of a beautiful article by Itskovsky, in which he explains the kinetics of a ferroelectric phase transition in a thin ferroelectric layer (ﬁlm). We have been researching ferroelectric materials since 2001. There are several materials known for their ferroelectric properties. Barium titanate and barium strontium titanate are the most well known. Several others include tantalum oxide, lead zirconium titanate, gallium nitride, lithium tantalate, aluminium, copper oxide, and lithium niobate. There is still a blue ocean of ferroelectric applications yet to be expounded. It is and hopefully always will be a bright future.

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Ferroelectrics and Their Applications

Edited by Husein Irzaman

Chapters authored

Modified Spin Coating Method for Coating and Fabricating Ferroelectric Thin Films as Sensors and Solar Cells

By Irzaman, Heriyanto Syafutra, Ridwan Siskandar, Aminullah and Husin Alatas

Spin coating process with a modified spin coater is performed well, especially the second generation of modified spin coater, which has a maximum value of 18,000 rpm, is able for manufacturing/coating photonic crystal‐based ferroelectric thin films that require a high angular velocity (rpm). Ferroelectric thin films that use both 3000 and 6000 rpm have given good results in energy gap, electrical conductivity, etc. In addition, the modified spin coater has also produced several applications such as sensors in the device of blood sugar level noninvasively, sensors in the automatic drying system, sensors in the robotic system, and photovoltaic cells in the system of solar cells/panels which are being developed at present. These applications used ferroelectric material such as barium strontium titanate (BST), lithium niobate (LiNbO3), cuprous oxide (CuO), and lithium tantalate (LiTaO3).

Part of the book: Thin Film Processes

The Effects of Lanthanum Dopant on the Structural and Optical Properties of Ferroelectric Thin Films

By Irzaman, Hendradi Hardhienata, Akhiruddin Maddu, Aminullah and Husin Alatas

This chapter presents the effect of lanthanum (La) dopant on the structural and optical properties of the following ferroelectric thin films: barium strontium titanate (Ba0.5Sr0.5TiO3) (BST), lithium tantalate (LiTaO3), and lithium niobate (LiNbO3). We applied X‐ray diffraction, Fourier transform infrared spectroscopy (FTIR), and in some cases, atomic force microscopy to investigate the structural properties, functional groups, and particle size, as well surface roughness of these lanthanum‐doped thin films, respectively, whereas ultra violet‐visible (UV‐Bis) spectrometer was applied to investigate the optical bandgap of the La‐doped thin films. The results are in agreement with other previously researcher studies using different substrate materials. In general, the effect of La dopant highly affects both the structural and optical properties, changing significantly the grain size, surface roughness, and energy gap, and in certain cases, such as BST doped by La can change the material electric properties from insulator to semiconductor. Therefore, La‐doped thin films may offer promising applications in the future.

Part of the book: Rare Earth Element

Introductory Chapter: Ferroelectrics Material and Their Applications

By Irzaman Husein and Renan Prasta Jenie

Part of the book: Ferroelectrics and Their Applications

Husein Irzaman

Latest work with IntechOpen by Husein Irzaman

Ferroelectrics and Their Applications

Chapters authored

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