S. Manjura Hoque, Md. Sazzad Hossain, Shamima Choudhury, Shammi Akhter et al.
Biomedical applications of ZnFe2O4 nanoparticle are preferable among all kinds of ferrites due to the compatibility of Zn2+ ions for human bodies. We have followed the soft chemical route to synthesize chitosan and PEG coated ZnFe2O4 nanoparticles and also the chitosan-coated-nanoparticles encapsula...
Kazi Hanium Maria, Shamima Choudhury, Mohammad Abdul Hakim
A series of Cu1-xZn x Fe2O4 ferrite (with x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6) compositions were synthesized using the standard solid-state reaction technique. X-ray diffraction was used to study the structure of the above investigated samples. The theoretical and experimental lattice parameters (...
Fatema Rezwana Chowdhury, Shamima Choudhury, Firoz Hasan, Tahmina Begum
Thin films of Tin Oxide (SnO2), having thickness of 200 nm, were formed on to glass substrates by thermal evaporation of high-purity SnO2 powder in vacuum at various substrate temperatures (TS), ranging between 25 and 200°C. SnO2 films with varying thickness were also prepared for a fixed TS = 100°C...
Sabina Yasmm, Shamima Choudhury, Md. Abdul Hakim, A.H. Bhuiyan et al.
Md. Sazzad Hossain, S. Manjura Hoque, Samia Islam Liba, Shamima Choudhury
Zinc ferrite samples were prepared by two different routes which are chemical co-precipitation and standard solid state double sintering method. Structural properties of ZnFe2O4 were determined, and initial particle size was found as 5 nm in the samples prepared by chemical co-precipitation techniqu...
Myeesha Mostafa, Mohammad Jellur Rahman, Shamima Choudhury
Abstract Ba 1−x Ce x Ti 1−y Mn y O 3 (where x and y varies from 0.00 to 0.03) ceramic samples are synthesized by conventional solid state reaction technique. The samples are sintered at 1473 K for 4 h. The grain size is observed to increase with increasing dopant and co-dopant concentration. The X-r...
Armin Anwar, M. A. Basith, Shamima Choudhury
In this investigation, multiferroic bulk ceramic materials with nominal compositions Bi 1-x Sm x Fe 1-y Ti y O 3 (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-effe...
Mahabub Alam Bhuiyan, S. Manjura Hoque, Shamima Choudhury
Polycrystalline NiFe2O4 was prepared by solid state reaction from nano size powder of NiO and Fe2O3 which were synthesized by wet chemical method. The inverse spinel single phase of the sample has been confirmed by the X-ray diffraction patterns. SEM micrographs of the samples revealed that the grai...
Probal Roy, S. Manjura Hoque, Samia Islam Liba, Shamima Choudhury
Cobalt ferrite (CoFe2O4) nanoparticles synthesized by chemical co-precipitation method were studied to see the effect of annealing temperatures on the structural parameters and magnetic properties of the sample. X-ray powder diffraction (XRD), transmission electron microscope (TEM) and SAD pattern d...
Chitra Das, Jahanara Begum, Tahmina Begum, Shamima Choudhury
Effect of thickness on the optical and electrical properties of gallium arsenide (GaAs) thin films were studied. The films of different thicknesses were prepared by vacuum evaporation method (~10-4 Pa) on glass substrates at a substrate temperature of 323 K. The film thickness was measured in situ b...
A. Nahar, Kazi Hanium Maria, Samia Islam Liba, Md. Anwaruzzaman et al.
Fahim Jawad, Tawsif Ur Rahman Choudhury, S. M. Asif Sazed, Shamima Yasmin et al.
In this paper we have proposed a system that will be able to analyze the Optimum Crop Cultivation of Bangladesh based on the knowledge of Neuro-Fuzzy System (NFS). The Neuro-fuzzy system is the collection of two techniques: fuzzy logic and the neural network. The system can compute the yield of a ce...
Amrita Khan, Mahabub Alam Bhuiyan, Golam Dastegir Al Quaderi, Kazi Hanium Maria et al.
Effect of Zn content on the dielectric and transport properties of CoZnxFe2-xO4 (x = 0.0, 0.1, 0.2, 0.3 and 0.4), prepared by standard double sintering ceramic technique, sintered at 1000°C for 4 hours were investigated. The X-ray diffraction (XRD) pattern of the prepared samples showed single phase...
Mahmudur Rahman, Md. Rifat Uddin Akhand, M. Ali, Pobitra Barman et al.
Mehnaz Sharmin, Shamima Choudhury, Nasrin Akhtar, Tahmina Begum
Electrical properties such as electrical resistivity, Hall coefficient, Hall mobility, carrier concentration of p-type GaAs samples were studied at room temperature (300 K). Resistivity was found to be of the order of 5.6 × 10-3?-cm. The Hall coefficient (RH) was calculated to be 7.69 × 10-1cm3/C an...