Dr. Mohammed Abdul Basith is serving as a Professor in the Department of Physics of Bangladesh University of Engineering and Technology (BUET), Dhaka. He has completed BSc Hons. and MSc degrees in Physics from Shahjalal University of Science and Technology, Sylhet. Dr. Basith achieved PhD degree from the Materials and Condensed Matter Physics group, University of Glasgow, UK in 2011. His research interests include transmission electron microscopy (TEM) characterization of patterned ferromagnetic nanostructures by lithographic techniques. At present in BUET, Dr. Basith is working mainly on preparation and characterization of multifunctional nanomaterials for energy-related and spintronic applications. He has published more than 35 research papers in different prestigious journals like Nanoscale, Physical Review Applied, Nature Scientific Reports, Applied Physics Letters, Journal of Applied Physics, Nanotechnology, RSC Advances, Ceramics International, Journal of Alloys and Compounds etc. He is the reviewer of a number of reputed journals published from American Physical Society, American Institute of Physics, Royal Society of Chemistry etc. For the last few years, he has received research grants from different international and national organizations worth 500 thousand USD. In BUET, he has established Nanotechnology Research Laboratory for the synthesis and characterization of nanostructured materials. Since its inception in April 2014, he has been developing advanced facilities in this laboratory under different research projects from home and abroad. Dr. Basith designed a new syllabus titled `Nanophysics’ for the postgraduate students of BUET. The syllabus is designed to cover principles involved in fabrication of nanostructured systems and in measurement of phenomena at nanoscale. He is an activist of BUET career club to deliver lectures that helps young people build meaningful careers.
Materials and Condensed Matter Physics
University of Glasgow,UK
Solid State Physics
Bangladesh University of Engineering and Technology (BUET),Dhaka -1000, Bangladesh
Shah Jalal University of Sciences and Technology, Sylhet-3114, Bangladesh
Shah Jalal University of Sciences and Technology, Sylhet-3114, Bangladesh
UNIVERSITY OF GLASGOW, UK - [SEP 2007 - MAR 2011]
Glasgow University funded postgraduate scholarship
BRITISH GOVERNMENT - [SEP 2007 - MAR 2011]
Overseas Research Student Award Scheme (ORSAS) by British Government
BERLIN, GERMANY - [JUL 2007]
Financial assistance provided by the organizing committee for joining in the International colloquium on thin magnetic films and surfaces
ICYS-ICMR And UNIVERSITY OF CALIFORNIA, SANTA BARBABA, USA -
Financial assistance for joining in the ICYS ICMR Summer School 2006 on Nanomaterials,
National Institute of Materials Science, Tsukuba, JAPAN. The nance was provided by the International Centre for Materials Research, University of California, Santa Barbara, USA
ICTP, ITALY - [JAN 2006]
Financial assistance from ICTP, Italy for joining in the Advanced workshop on Recent Developments in Inorganic Materials, The Abdus Salam International Center for Theoretical Physics(ICTP), Trieste, ITALY.
JNCASR, BANGALORE, INDIA And UNIVERSITY OF CALIFORNIA, SANTA
BARBARA, USA - [DEC 2006]
Financial assistance for joining in the JNCASR-ICMR Winter School on the Chemistry of Materials, JNCASR, Bangalore, INDIA. The nance was provided by the International Centre for Materials Research, University of California, Santa Barbara, USA.
ICTP-NCNST-ICTS, CHINA - [AUG 2006]
Financial assistance from ICTP, Italy for joining in the ICTP-NCNST-ICTS Asian /Pacific Regional College on Science at the Nanoscale, Beijing, CHINA.
MINISTRY OF SCIENCE AND ICT, GOVT. OF BANGLADESH - [AUG 2006]
NST fellowship, Ministry of Science and ICT, Government of Bangladesh
KEIO UNIVERSITY, JAPAN - [APR 2007]
Selected for Japanese Government Monbu-Kagakusho Scholarship for PhD programme
NATIONAL TAIWAN UNIVERSITY, TAIWAN - [APR 2007]
Selected for Taiwan International Graduate Scholarship for PhD programme
EHIME UNIVERSITY, JAPAN - [APR 2005]
Selected for Japanese Government Monbu-Kagakusho Scholarship for PhD programme at Ehime University, Japan
NORWEGIAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, NORWAY -
Selected for State Educational Fund for M.Sc programme from Norwegian University of Science and Technology, Norway.
From bulk to nano: A comparative investigation of structural, ferroelectric and magnetic properties of Sm and Ti co-doped BiFeO3 multiferroics
In this investigation, multiferroic bulk ceramic materials with nominal compositions Bi1-xSmxFe1-yTiyO3 (x, y = 0.00, 0.03, 0.06) are synthesized by conventional solid-state reaction technique. Their corresponding nanoparticles are fabricated from these bulk powder materials using cost-effective ultrasonication method. Then, the structural and multiferroic properties of the synthesized nanoparticles and their bulk-counterparts are compared. The X-ray diffraction patterns of 6% Sm-Ti co-substituted BiFeO3nanoparticles as well as their bulk powder materials confirm rhombohedral to orthorhombic structural phase transition. Dynamic Light Scattering analysis (DLS) demonstrates the formation of particles with a size in the range of 10–100 nm for the 6% Sm-Ti co-substituted BiFeO3 sample. The fabricated nanoparticles of this particular composition also exhibit suppressed leakage current density and enhanced ferroelectric behavior. These nanoparticles also demonstrate improved ferromagnetic behavior compared to their bulk counterparts. Thus, the present investigation illustrates the impact of Sm and Ti as co-doping elements with 6% concentration in BiFeO3 nanoparticles with improved structural and multiferroic properties required for practical applications.
Low temperature synthesis of BiFeO3 nanoparticles with enhanced magnetization and promising photocatalytic performance in dye degradation and hydrogen evolution
Enhanced photocatalytic dye degradation and hydrogen production ability of Bi25FeO40-rGO nanocomposite and mechanism insight
Sol-gel synthesis of DyCrO3 and 10% Fe-doped DyCrO3 nanoparticles with enhanced photocatalytic hydrogen production abilities
Enhanced multiferroism in Gd-doped BiMn2O5 ceramics.
Determination of optical band gap of powder form nanomaterials with improved accuracy
Temperature-dependent phase transition and comparative investigation on enhanced magnetic and optical properties between sillenite and perovskite bismuth ferrite-rGO nanocomposites
Simple sonofragmentation approach for synthesis of NiFe nanoalloy with tunable magnetization
Dy doped BiFeO3: A bulk ceramic with improved multiferroic properties compared to nano counterparts
The synthesis as well as structural, multiferroic and optical characterization of Dy doped BiFeO3 multiferroic ceramic are presented. Bulk polycrystalline Bi0.9Dy0.1FeO3 sample is synthesized by solid state reaction, while their nano counterparts are prepared using ultrasonic probe sonication technique. Significant improvement of phase purity in the as synthesized samples is observed after the doping of Dy both in bulk Bi0.9Dy0.1FeO3 sample and corresponding nanoparticles as evidenced from Rietveld refinement. Magnetization measurements using SQUID magnetometer exhibit enhanced magnetic properties for Dy doped bulk Bi0.9Dy0.1FeO3 ceramic compared to their nanostructured counterparts as well as undoped BiFeO3. Within the applied field range, saturation polarization is observed for Bi0.9Dy0.1FeO3 bulk ceramic only. As a result, intrinsic ferroelectric behavior is obtained just for this sample. Optical bandgap measurements reveal lower bandgap for Dy doped bulk Bi0.9Dy0.1FeO3 ceramic compared to that of corresponding nanoparticles and undoped BiFeO3. The outcome of this investigation demonstrates the potential of Dy as a doping element in BiFeO3 that provides a bulk ceramic material with improved multiferroic and optical properties compared to those of corresponding nanoparticles which involve rigorous synthesis procedure.
Preparation of high crystalline nanoparticles of rare-earth based complex perovskites and comparison of their structural and magnetic properties with bulk counterparts
A simple route to prepare Gd0.7Sr0.3MnO3 nanoparticles by ultrasonication of their bulk powder materials is presented in this article. For comparison, Gd0.7Sr0.3MnO3 nanoparticles are also prepared by ball milling. The prepared samples are characterized by x-ray diffraction (XRD), field emission scanning electron microscope (FESEM), energy dispersive x-ray (EDX), x-ray photoelectron spectroscope (XPS), and superconducting quantum interference device (SQUID) magnetometer. XRD Rietveld analysis is carried out extensively for the determination of crystallographic parameters and the amount of crystalline and amorphous phases. FESEM images demonstrate the formation of nanoparticles with average particle size in the range of 50–100 nm for both ultrasonication and 4 h (h) of ball milling. The bulk materials and nanoparticles synthesized by both ultrasonication and 4 h ball milling exhibit a paramagnetic to spin-glass transition. However, nanoparticles synthesized by 8 h and 12 h ball milling do not reveal any phase transition, rather show an upturn of magnetization at low temperature. The degradation of the magnetic properties in ball milled nanoparticles may be associated with amorphization of the nanoparticles due to ball milling particularly for milling time exceeding 8 h. This investigation demonstrates the potential of ultrasonication as a simple route to prepare high crystalline rare-earth based manganite nanoparticles with improved control compared to the traditional ball milling technique.
Effect of Strontium substitution on the structural and magnetic properties of La1.8Sr0.2MMnO6 (M = Ni, Co) layered manganites
Sr-substituted perovskites, La1.8Sr0.2MMnO6 (M = Ni, Co), were synthesized using the solid-state reaction technique to present a systematic study on their morphological, structural and magnetic properties. The average grain size of the as-prepared La1.8Sr0.2MMnO6 samples are in the range of 0.2–0.7 µm and those for La1.8Sr0.2CoMnO6 manganites are 0.1–2.8 μm, which is significantly less than that of unsubstituted La2NiMnO6 (LNMO) and La2CoMnO6 (LCMO) manganites. The XPS analysis enlightened about phase purity, binding energy and oxygen vacancy of La1.8Sr0.2MMnO6 manganites. The Sr-substituted LNMO has revealed a sharp ferromagnetic to paramagnetic phase transition at 160 ± 2 K, which is about 120 K less than that of parent LNMO. The Sr-substituted LCMO exhibited such a transition at 220 ± 2 K, which is 8 K less than that of parent LCMO. The temperature-dependent magnetization measurements suggest that the effect of Sr on the transition temperature in LNMO is more significant than that of LCMO.
The 10% Gd and Ti co-doped BiFeO3: A promising multiferroic material
In this investigation, undoped BiFeO3, Gd doped Bi0.9Gd0.1FeO3, and Gd-Ti co-doped Bi0.9Gd0.1Fe1-xTixO3 (x = 0.10, 0.20) materials were synthesized to report their multiferroic properties. The structural analysis and phase identification of these multiferroic ceramics were performed using Rietveld refinement. The Rietveld analysis has confirmed the high phase purity of the 10% Gd-Ti co-doped Bi0.9Gd0.1Fe0.9Ti0.1O3 sample compared to that of other compositions under investigation. The major phase of this particular composition is of rhombohedral R3c type structure (wt% >99%) with negligible amount of impurity phases. In terms of characterization, we address magnetic properties of this co-doped ceramic system by applying substantially higher magnetic fields than that applied in previously reported investigations. The dependence of temperature and maximum applied magnetic fields on their magnetization behavior have also been investigated. Additionally, the leakage current density has been measured to explore its effect on the ferroelectric properties of this multiferroic system. The outcome of this investigation suggests that the substitution of 10% Gd and Ti in place of Bi and Fe, respectively, in BiFeO3 significantly enhances its multiferroic properties. The improved properties of this specific composition is associated with homogeneous reduced grain size, significant suppression of impurity phases and reduction in leakage current density which is further asserted by polarization vs. electric field hysteresis loop measurements.
Saturation magnetization and band gap tuning in BiFeO3 nanoparticles via co-substitution of Gd and Mn
In this investigation, Gd and Mn co-doped Bi0.85Gd0.15Fe1−xMnxO3 (x = 0.0–0.15) nanoparticles have been prepared to report the influence of co-substitution on their structural, optical, magnetic and electrical properties. Due to simultaneous substitution of Gd and Mn in BiFeO3, the crystal structure has been modified from rhombohedral (R3c) to orthorhombic (Pn21a) and the FeOFe bond angle and FeO bond length have been changed. For Mn doping up to 10% in Bi0.85Gd0.15Fe1−xMnxO3 nanoparticles, the saturation magnetization (Ms) has been enhanced significantly, however, for a further increase of doping up to 15%, the Mshas started to reduce again. The co-substitution of Gd and Mn in BiFeO3nanoparticles also demonstrates a strong reduction in the optical band gap energy and electrical resistivity compared to that of undoped BiFeO3.
Large difference between the magnetic properties of Ba and Ti co-doped BiFeO3 bulk materials and their corresponding nanoparticles prepared by ultrasonication
The ceramic pellets of the nominal compositions Bi0.7Ba0.3Fe1−x Ti x O3 (x = 0.00–0.20) were prepared initially by standard solid state reaction technique. The pellets were then ground into micrometer-sized powders and mixed with isopropanol in an ultrasonic bath to prepare nanoparticles. The x-ray diffraction patterns demonstrate the presence of a significant number of impurity phases in bulk powder materials. Interestingly, these secondary phases were completely removed due to the sonication of these bulk powder materials for 60 minutes. The field and temperature dependent magnetization measurements exhibited significant difference between the magnetic properties of the bulk materials and their corresponding nanoparticles. We anticipate that the large difference in the magnetic behavior may be associated with the presence and absence of secondary impurity phases in the bulk materials and their corresponding nanoparticles, respectively. The leakage current density of the bulk materials was also found to suppress in the ultrasonically prepared nanoparticles compared to that of bulk counterparts.
Size dependent magnetic and electrical properties of Ba-doped nanocrystalline BiFeO3
Improvement in magnetic and electrical properties of multiferroic BiFeO3 in conjunction with their dependence on particle size is crucial due to its potential applications in multifunctional miniaturized devices. In this investigation, we report a study on particle size dependent structural, magnetic and electrical properties of sol-gel derived Bi0.9Ba0.1FeO3nanoparticles of different sizes ranging from ∼ 12 to 49 nm. The substitution of Bi by Ba significantly suppresses oxygen vacancies, reduces leakage current density and Fe2+ state. An improvement in both magnetic and electrical properties is observed for 10 % Ba-doped BiFeO3 nanoparticles compared to its undoped counterpart. The saturation magnetization of Bi0.9Ba0.1FeO3 nanoparticles increase with reducing particle size in contrast with a decreasing trend of ferroelectric polarization. Moreover, a first order metamagnetic transition is noticed for ∼ 49 nm Bi0.9Ba0.1FeO3 nanoparticles which disappeared with decreasing particle size. The observed strong size dependent multiferroic properties are attributed to the complex interaction between vacancy induced crystallographic defects, multiple valence states of Fe, uncompensated surface spins, crystallographic distortion and suppression of spiral spin cycloid of BiFeO3.
Anomalous coercivity enhancement with temperature and tunable exchange bias in Gd and Ti co-doped BiFeO3 multiferroics
Lorentz TEM imaging of magnetic hybrid structures embedded in a soft magnetic matrix.
Tunable exchange bias effect in magnetic Bi0.9Gd0.1Fe0.9Ti0.1O3 nanoparticles at temperatures up to 250 K.
Engineering magnetic domain-wall structure in permalloy nanowires.
Magneto-structural coupling in NixZn1-xCr2O4.
Simple top-down preparation of magnetic Bi0.9Gd0.1Fe1-xTixO3 nanoparticles by ultrasonication of mutiferroic bulk material.
Room temperature dielectric and magnetic properties of Gd and Ti co-doped BiFeO3 ceramics.
Reproducible domain wall pinning by linear non-topographic features in a ferromagnetic nanowire.
Direct comparison of domain wall behavior in Permalloy nanowires patterned by electron beam lithography and focused ion beam milling.
The microstructure, high performance magnetic hardness and magnetic after-effect of an α- FeCo/Pr2Fe14B nanocomposite magnet with low Pr concentration.
A study on the Carrier Recombination in the Back Surface for the Performance of Crystalline Si-Solar Cell.
Temperature features of magnetoresistance of layered manganite La2Sm0.4Sr0.6Mn2O7.
Effect of MnO2 layers on the transport properties of Lan-nxCa1+nxMnn-yCryO7 (n =2, 3; x = 0.3; y = 0.075, 0.15, 0.3).
Observation of high Tc in the bi-layered La2SmxSr1-xMn2O7 perovskite.
Scientific Literacy and Eco materials Research for Global Mankind.
Materials Science Education and Research in Bangladesh: Present Trends and Future Perspective for Industrial Development.
Magnetoresistive Properties of Gd Doped Lanthanum Strontium Manganites.
Magnetoresistive Properties of La2-xHoxBa1-yCayMn2O7 Manganites.
A study of Shielding effectiveness in various materials using PHOTCOEF.
Investigation of the Dose Deposition Profiles in Various Materials Using PHOTCOEF.
Strong Ultraviolet Radiation Effects on German Made CsI (Tl) Crystal.
Synthesis of Iron-Magnesium Oxide-Reduced Graphene Oxide Nanocomposite and Investigation of its Photocatalytic Activity for Dye Degradation and Solar Hydrogen Generation.
Towards the Development of Nanotechnology Research Laboratory, BUET.
Hydrothermal Route: An Excellent Synthesis Process for Producing High Phase Pure Bismuth Ferrite Nanoparticles at Low Temperature.
Structural and Optical Properties of BiFeO3: A Combined Experimental and Theoretical Investigation.
Dy Doped CoFe2O4 Nanoparticles Prepared at Ar atmosphere for Photocatalytic Applications.
Effect of 10% Fe-doping on the Photocatalytic Hydrogen Production Ability of Sol-gel Synthesized DyCrO3 Nanoparticles.
Improved Morphology and Enhanced Multiferroicity in Gd-doped BiMn2O5 Ceramics.
Modification of Beer-Lambert law and Kubelka-Munk function to accurately measure optical band gap of powder-form nanomaterials.
Synthesis of Magnetic Binary Alloy Nanoparticles by Sonofragmentation Process.
Low Temperature Synthesis of 10% Dy doped BiFeO3 Nanoparticles by Cost Effective Hydrothermal Technique and Comparison of its Structural and Magnetic Properties with Bulk Counterpart.
A Comparative Investigation on Enriched Photocatalytic Properties between Sillenite and Perovskite Bismuth Ferrite-rGO Nanocomposites.
Preparation of Bi0.9Y0.1 FeO3 Nanoparticles and Investigation of their Multiferroic and Photocatalytic Properties.
Preparation and Investigation of the Structural and Magnetic Properties of Nd0.7Sr0.3MnO3 Nanoparticles and their Bulk Counterparts.
Effect of Heat Treatment at Inert Atmosphere on the Structural and Optical Properties of Gd doped BiFeO3-rGO Nanocomposite.
Optimization of the Oxidation Temperature of Graphene Oxide.
A simple route to prepare Gd0.7Sr0.3MnO3 nanoparticles from their bulk powder materials.
Facile hydrothermal synthesis of bismuth ferrite-reduced graphene oxide nanocomposites and investigation of their crystallographic phase transition.
Multiferroic properties of Gd Doped BiFeO3 Nanoparticles Prepared By Sol-Gel Method.
Sol-Gel synthesis of DyCrO3 nanoparticles as novel photocatalysts.
Enhancement in The Multiferroic Properties of Gd And Mn Co-Doped BiFeO3 Ceramics.
A Promising Bulk Multiferroic Material: The 10% Gd And Ti Co-Doped BiFeO3.
Effect of Ti doping in BiFeO3 multiferroics.
Rietveld analysis and magnetic properties of Nd0.7Sr0.3MnO3 manganites.
Preparation of Bi25FeO40-rGO nanocomposites via a facile hydrothermal route and investigation of their magnetic and optical properties.
Effect of synthesis route on the structural, magnetic and optical properties of BiFeO3: a comparative study between solid state and hydrothermal methods.
Enhanced coercivity and tunable exchange bias in Gd and Ti co-doped BiFeO3 multiferroics.
Dy doped BiFeO3: A promising destination in the quest of a ceramic with improved bulk multiferroic properties compared to those of its corresponding nanoparticles.
Enhanced Multiferroism in Li-doped Bismuth Ferrite.
Dy doped BiFeO3: A multiferroic with bulk structural and ferroelectric properties comparable with nano counterparts.
Assessment of Effectiveness of Hematite and Bismuth Ferrite Nanoparticles as Adsorbents for Arsenic Removal.
Multiferroic properties of Li doped BiFeO3 nanoparticles prepared by ultrasonication.
Properties of Nd and Co co-doped BiFeO3 Ceramics at Room Temperature.
Preparation and Investigation of the Structural and Magnetic Properties of Perovskite Manganites La1.8Sr0.2CoMnO6.
Simple Top-Down Preparation of Magnetic Bi0.9Gd0.1Fe1-xTixO3 Nanoparticles by Ultrasonication of Multiferroic Bulk Material.
Comparison of the Magnetic Properties of Gd0.7Sr0.3MnO3 Nanoparticles and their Bulk Counterparts.
Temperature Dependent Dielectric and Magnetic Properties of Gd and Ti co-Doped BiFeO3 Ceramics.
Dielectric and Magnetic Properties of Nd and Co co-Doped BiFeO3 Ceramics at Room Temperature.
Exploring exchange bias effect in Gd and Ti co-doped BiFeO3 multiferroics.
Temperature dependent dielectric and magnetic properties of Bi1-xGdxMnO3 ceramics .
Structural, dielectric and magnetic properties of Gd and Ti co-doped BiFeO3 multiferroics.
Micromagnetics simulation of the edge profiles of permalloy (Ni80Fe20) nanowires.
Evidence of ferromagnetic transition in antiferromagnetic LaMnO20 due to size reduction .
Evolution of CoFe2O4 nanoparticles and strong correlation of grain size with physical properties .
Detection of Magnetic labels using Planar Hall Resistance Sensor.
Reproducible pinning/depinning of magnetic domain wall by linear non-topographic features in a ferromagnetic nanowire.
Controlling domain walls by non-topographic pinning features in a permalloy nanowire structure.
Analysis of magnetic structure in nanopatterned thin films.
Magnetisation reversal processes in ion irradiated magnetic stripes.
Ion induced pinning sites to control domain walls in planar nanowires.
Electron transport properties of Fe- doped bi-layered managnites La1.6Dy0.2Sr1.2Mn2-xFexO7
Magnetoresistance in Double Layered Perovskite Manganites.
A Study of the Electrical Properties of Silicon Dioxide (SiO2) Thin Films.
Exploring Gd and Ti co-doped BiFeO3 Multiferroics for Spintronic and Energy Applications.