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Theses and Dissertations of this Department: Recent submissions

Now showing items 21-40 of 79

Students’ Conceptual Knowledge Development On Newton’s First Law Of Motion Using Simulation: A Case Of Shenen High School, West Shewa, Oromia, Ethiopia

Gemeda, Gebisa (Ambo University, 2024-05)

The purpose of this study was to investigate the conceptual knowledge development of students’ on Newton’s first law of motion using computer simulation in Shenen Secondary School. A quasi-experimental design was used to ...
First Principle Investigation Of Structural, Electronic And Optical Properties Of Cadmium Telluride (Cdte)

Desta, Dilba (Ambo University, 2024-05)

This study presents a first-principles investigation of the structural, electronic, and optical properties of CdTe using DFT calculations. Different computational methods were used to study the effects of CdTe with Quantum ...
Temperature Dependent Maximization Of Power And Opti- Mized Efficiency In Quantum Stirling Heat Engine

Dinaol, Zawdie (Ambo University, 2024-06)

In this thesis, we take a temperature dependent maximization of power and an optimized e ciency of quantum Stirling heat engine based on harmonic oscillators as the working medium. A quantum Stirling heat engine with an ...
Enhancing Students’ Conceptual Knowledge Of Archimedes Principle Using Simulation: A Case Of Ejersa Kawo Secondary School, North Showa, Oromia, Ethiopia

Kefale, Tolcha (Ambo University, 2024-05)

The purpose of this study was to investigate the conceptual knowledge of students’ on Archimedes principle using computer simulation in Ejersa kawo secondary School. A quasi-experimental design was used to achieve the ...
The Study Of Interplay Of Superconductivity And Ferromagnetism In 𝐄𝐫𝐑𝐡𝟒𝑩𝟒

Tolasa, Hika (Ambo University, 2024-05)

The study of interplay of superconductivity and ferromagnetism in 𝐸𝑟𝑅ℎ4𝐵4was investigated theoretically. A BCS type model Hamiltonian which represents the competing energies in the system was developed. This model ...
First Principle Investigation Of Structural, Electronic, And Optical Properties Of Cadmium Selenide (Cdse)

Erko, Guta (Ambo University, 2024-02)

This study presents a first-principles investigation of the structural, electronic, and optical properties of CdSe (cadmium selenide) using density functional theory (DFT) calculations. The structural parameters were ...
Theeffectofmagnon-Excitoninteractiononferromag Netic Properties Of Diluted Magnetic Semiconductors (Gamnas)

Kefena, Biru (Ambo University, 2024-03)

Spintronics devices, integral to modern technology, allow for the manipulation of both charge carriers and spin within a single platform, offering advantages such as non-volatility, rapid data processing, low power ...
The Coexistence of Superconductivity and Ferromagnetism in RuSr2GdCu2O8

Alemu, Abebe (Ambo University, 2023-06)

This work focuses on the theoretical investigation of the possible coexistence of super conductivity and ferromagnetism in RuSr2GdCu2O8. By developing a model Hamilto nian for the given system and by using the Green’s ...
The Competition Between Superconductivity And Magnetism In Eufe2(As1􀀀xpx)2 Superconductor

Getachew, Adugna (Ambo University, 2021-09)

The competition between magnetic ordering and superconducting ordering was studies theoretically in EuFe2(As1􀀀xPx)2 superconductor. A BCS type model Hamiltonian which accounts for the possible competing energies in the ...
Students’ Conceptual Understanding Development of sound wave propagation using simulation: a Case of Yehibiret Fire High School, South West Shaw, Oromia, Eth

Genene, Zelleke (Ambo University, 2023-10)

The purpose of this study was to investigate the conceptual understanding development of students’ sound wave propagation using computer simulation in Yehibiret Fire Secondary School. A quasi-experimental design was used ...
The Study of Ferromagnetic Properties of Diluted Magnetic Semiconductor Ga1−xMnxAs

Bizo, Boki (Ambo University, 2023-09)

The effect of temperature and dopant ion concentration on the ferromagnetic properties of Ga1−xMnxAs was investigated theoretically. A Heisenberg type model Hamiltonian which incorporates the spin exchange interaction ...
The Effect Of Spin Density Wave Ordering On Superconductivity Of Flourine Doped Iron Arsenic Oxide A Thesis Submitted To The Department Of Physics In Partial Fulfillment Of The Requerments For The Degree Of Masters Of Science In Physics

Gonfa, Deressa (Ambo University, 2023-05)

In this work, the effect of magnetic ordering on superconducting properties of fluorine doped iron arsenic oxide (PrFeAsO1-yFy) was investigated theoretically. A Bardeen, Cooper and Schrieffer type model Hamiltonian was ...
An Optimized Multilevel Quantum Engine With N Non Interacting Fermions Based On Lenoir Cycle

Bayisa, Abdisa (Ambo University, 2023-11)

A quantum Lenior engine within a quantum dynamical field consisting of N noninteracting fermions trapped in multilevel infinite potential square-well is studied. Fermions play role as working substance of the engine with ...
Optimized Dissipative Heat Engine With Finite-Sized Heat Reservoirs

Daniel, Fasil (Ambo University, 2023-06)

Dissipative heat engine with finite-sized heat reservoirs in which the maximum efficiency is set to be and the minimum efficiency (the efficiency at maximum power) is set to be is optimized under considerations of ...
The Study Of Magnetism In Manganese Doped Cadmium Selenide (Cd1−Xmnxse) Diluted Magnetic Semiconductor

Bayisa, Jifara (Ambo University, 2023-02)

Effect of temperature and dopant concentration on magnetic properties of manganese doped diluted magnetic semiconductor (Cd1−xMnxSe) was investigated theoretically by making use of the equation of motion approach of the ...
The Study Of Coexistence Of Superconductivityand Magnetism In Sodium Doped Calsium Iron

Gadisa, Sori (Ambo University, 2023-05)

This research work focuses on the theoretical investigation of the possible coexistences of magnetism and superconductivity in sodium doped calcium iron Arsenide ). The process of doping play a central role in the ...
Optimized Irreversible Low Dissipation Carnot Like Heat Engine

Lemi, Lechisa (Ambo University, 2023-05)

In this study, the irreversible low dissipation of a Carnot-like heat engine under the consideration of a Brownian particle was optimized. Irreversible heat engine is actual heat engine in which non-zero power and its ...
An Optimized Efficiency Of Linear Irreversible Carnot Like Heat Engine

Kershi, Negasa (Ambo University, 2022-10)

Linear irreversible Carnot like heat engine in which the maximum efficiency is set to be and the minimum efficiency (the efficiency at maximum power) is set to be it is effectively optimized. The study investigated the ...
Structural, Electronic, Optical, Elastic and Thermal Properties of Gallium Arsenide (GaAs): A Density Functional Theory Study

Alemayehu, Wondie (Ambo University, 2022-11)

Gallium Arsenide (GaAs), an outstanding member of the III-V semiconductor family with larger and direct band gap enable transistors made of GaAs preferred compared to silicon. The problem of computationally understanding ...
The Study of Ferromagnetism in Diluted Magnetic Semiconductor Hg1−xMnxTe

Shelema, Megersa (Ambo University, 2023-02)

In this thesis, we studied the effect of temperature and concentration of dopant magnetic impurity on magnetic properties of Hg1−xMnxTe. We have defined a model Hamiltonian which represents the interaction of magnons in ...

Now showing items 21-40 of 79

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