Dissertations/Theses - Department of Physics: Recent submissions

Now showing items 21-40 of 391

Effect of Dy substitution on the structural, electrical and magnetic properties of Mg0.4Cu0.2Zn0.4Fe2O4 Ferrites

Mahmudul Hassan (Department of Physics, BUET, 2022-06-19)

Structural, electrical and magnetic properties of Mg0.4Cu0.2Zn0.4DyxFe2-xO4 ferrites (where x = 0.0, 0.01, 0.02, 0.03 and 0.04) prepared by the solid state reaction technique had been observed in this study. The x-ray ...
Synthesis and characterization of structural, optical and electrical properties of chromium and nickel doped titanium dioxide thin films

Abdul Ahad (Department of Physics, BUET, 2022-10-12)

Un-doped TiO2 and TiO2 with 2, 4, 6, and 8 atomic (at.)% Cr and Ni doped thin films have been successfully deposited by a simple and cost-effective spray pyrolysis deposition (SPD) technique. The surface morphology of the ...
Synthesis of dysprosium chromite-reduced graphene oxide nanocomposites by hydrothermal process and study of their photocatalytic activity

Zuel Rana, Md. (Department of Physics, BUET, 2021-12-05)

Heterogenous nanocomposites with reduced graphene oxide (rGO) have gained significant attention because of their superior light-harvesting properties. Here, in this investigation, orthorhombic DyCrO3 nanoparticles and ...
Development and validation of a dual filtration technique to control the size distribution of giant lipid vesicles

Tawfika Nasrin (Department of Physics, BUET, 2021-12-18)

A new purification technique is developed for obtaining the distribution of giant unilamellar vesicles (GUVs) within a specific range of sizes using dual filtration. The GUVs were prepared using the natural swelling method. ...
Effect of manganese substitution on the structural and magnetic properties of nanocrystalline lithium-zinc-manganese ferrites

Benjir Ahmed (Department of Physics, BUET, 2021-11-20)

Structural and magnetic properties of mixed ferrite with nominal compositions Li0.2Zn0.6-xMnxFe2.2O4 ranging from x = 0.00 to 0.60 have been synthesized by auto combustion technique. Disk- and toroid-shaped samples prepared ...
Investigation of the structural, electrical and magnetic properties of mn-doped AlFeO3

Tanzina, Tabassum (Department of Physics, BUET, 2021-02-06)

Combining different physical properties into one material is promising for the creation of multifunctional materials. AlFeO3 (AFO) and Al(Fe0.98Mn0.02)O3 (AMFO), lead-free perovskite materials, have been synthesized by ...
Influence of vanadium pentoxide addition on the structural and electromagnetic properties of Li-Zn ferrites

Rubayatul Islam, Sm. (Department of Physics, BUET, 2021-10-09)

The influence of V2O5 addition on the microstructural, electrical and magnetic properties of Li-Zn ferrites having the compositions Li0.25Zn0.50Fe2.25O4 + xV2O5 (where x = 0.0, 0.4, 0.8 and 1.2 wt %) are reported in this ...
Influence of vanadium pentoxide addition on the structural and electromagnetic properties of Li-Zn ferrites

Rubayatul Islam, Sm. (Department of Physics, BUET, 2021-10-09)

The influence of V2O5 addition on the microstructural, electrical and magnetic properties of Li-Zn ferrites having the compositions Li0.25Zn0.50Fe2.25O4 + xV2O5 (where x = 0.0, 0.4, 0.8 and 1.2 wt %) are reported in this ...
Effects of sodium chloride concentration on the electroporation induced rate constant of rupture of vesicles

Towhiduzzaman, Md. (Department of Physics, BUET, 2021-06-01)

Vesicles with nano-to micrometer in diameter are basically a closed and spherical structure formed by a double layer of lipids. Irreversible electroporation (IRE) induced lateral electric tension in the membranes of giant ...
Effects of surface charge density of membranes on the irreversible electroporation induced rate constant of pore formation of vesicles

Urbi Shyamolima Orchi (Department of Physics, BUET, 2021-06-01)

In this study, the effects of surface charge density of membranes on the irreversible electroporation (IRE)-induced rate constant of pore formation in the membranes of giant unilamellar vesicles (GUVs) was investigated. ...
Investigation of surface microstructural, optical and photocatalytic activity of tungsten doped titanium dioxide thin films deposited by spray pyrolysis

Saha, Tusar (Department of Physics, BUET, 2021-09-04)

In the present study, un-dopedtitanium dioxide (TiO2) and tungsten (W) doped TiO2 thin films have been deposited onto plain glass substrates at 450 °C using the spray pyrolysis method. The surface morphology, structural ...
Synthesis of MoS2 incorporated copper cobalt sulphide nanocomposites and investigation of their structural and electrochemical properties

Sajjad Hasan (Department of Physics, BUET, 2021-12-11)

In the present investigation, MoS2 incorporated CuCo2S4 nanocomposite has been successfully synthesized by a hydrothermal technique. High resolution transmission electron microscopy imaging demonstrated the successful ...
Investigation of structural, optical and electric properties of silver and iron doped barium titanate thin films deposited by spray pyrolysis

Ganguly, Dulal (Department of Physics, BUET, 2021-08-14)

In this work, undoped Barium Titanate (BTO), Silver (Ag) and Iron (Fe) doped BTO thin films have been deposited using the spray pyrolysis method onto plain glass substrates at 300 ℃. The surface morphology, structural, ...
Effects of cholesterol on the bending modulus of membranes and the electroporation induced pore formation of vesicles

Nadia Akter Mokta (Department of Physics, BUET, 2021-07-31)

The effects of cholesterol (chol) in the membranes of giant unilamellar vesicles (GUVs) on the size distribution of vesicles and the irreversible electroporation (IRE)-induced pore formation in GUVs were investigated. ...
Synthesis and optoelectronic characterizations of cesium tin chloride perovskite nanocrystals

Shahjahan Ali, Md. (Department of Physics, BUET, 2021-10-30)

In this investigation, thermally stable cubic phase cesium tin chloride (CsSnCl3) perovskite nanocrystals were successfully synthesized with a promising surface morphology by adopting a rapid hot-injection technique. The ...
Synthesis of ZnO nanorods by microwave irradiation of precursor solution and study of their process parameters

Munira Sultana (Department of Physics, BUET, 2021-06-30)

Zinc oxide (ZnO) nanorods in the form of hexagonal prismatic shape have been successfully synthesized by a simple one step microwave assisted irradiation process using a customized domestic microwave oven. The effects of ...
Structural, magnetic and magnetocaloric properties of RE0.55 (CaxSr1-x)0.45MnO3 (RE= Sm, Pr, La) perovskite

Asma Akter Bally, Most. (Department of Physics, BUET, 2021-09-18)

The structural, magnetic and magnetocaloric properties of three series of compositions La0.55CaxSr0.45-xMnO3, Pr0.55CaxSr0.45-xMnO3 and Sm0.55CaxSr0.45-xMnO3 (x = 0.00, 0.05, 0.1, 0.2 and 0.25) synthesized by solid state ...
Synthesis of spray pyrolysed transition and rare earth metal oxides (Co3O4, MnO2, WO3, CeO2) thin films and their characterization

Muslima Zahan, Mst. (Department of Physics, BUET, 2021-03-31)

Semiconducting metal oxide based nano-materials play a very important role in the various fields of sensing materials for gas sensor and bio sensors due to rich physical and chemical stability. In this thesis, Iron (Fe) ...
Study of optical and electrical properties of plasma polymerized 1,2-diaminocyclohexane thin films synthesized by AC and RF power source

Mahmud Hasan, Md. (Department of Physics, BUET, 2021-06-12)

Smooth, transparent plasma polymerized (1,2-diaminocyclohexane) (PPDACH) thin films have been prepared on to glass substrates under AC (50 Hz) and RF (13.56 MHz) plasma using a capacitively coupled reactor. RF plasma ...
Investigation of magnetoelectric coupling in (1-x)Ba0.95D0.05TiO3 + xLi0.1Cu0.1Co0.1Zn0.6Fe2.1O4 (D = Sr, Ca) multiferroics for novel memory devices

Roksana Parvin (Department of Physics, BUET, 2021-04-10)

Various (1-x)Ba0.95D0.05TiO3 + xLi0.1Cu0.1Co0.1Zn0.6Fe2.1O4 composites (where, D = Sr, Ca; x=0.0, 0.1, 0.2, 0.3, 0.4, 0.8, and 1.0 ) were synthesized and studied in detail. The X-ray diffraction patterns of Ba0.95D0.05TiO3 ...

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