AUIR Home
→
College of Natural and Computational Sciences
→
Department of Physics
→
Theses and Dissertations of this Department
→
Recent submissions

Theses and Dissertations of this Department: Recent submissions

Now showing items 41-60 of 79

The Study Of Coexistance Of Superconductivity And Ferromagnetism In Y1−Xprxba2cu3o7−Δ

Gadafa, Adugna (Ambo University, 2022-12)

In this thesis, coexistence of superconductivity and ferromagnetism states in cuprate based superconductor Y1−xPrxBa2Cu3O7−δ was investigated theoretically. A model Hamiltonian which represents the competing energies in ...
The Study Of Electro-Chemical Properties Of Sofc Made From Ni-Gdc Anode, Pbco-Gdc Cathode And Gdc Electrolytes

Bezabih, Zegeye (Ambo University, 2023-01)

The energy crisis and global warming, both of which are driven by the combustion of fossil fuels, have drawn a lot of attention to the need for researchers to identify alternative energy sources to minimize fossil fuel ...
Structural, Electronic, Optical, Mechanical, And Thermal Properties Of Zirconium Oxide (M-Zro2) Using Density Functional Theory

Jirata, Begna (Ambo University, 2022-10)

ZrO2 is a ceramic material that has been widely used in modern engineering and industrial fields. To better understand and control ZrO2’s properties in practical applications, it is necessary to investigate its phase ...
Effect Of Temperature And Irradiance On A Perfomance Of Gallium Arsenide Solar Cell

Alemayehu, Mamo (Ambo University, 2023-02)

A solar cell (Photovoltaic cell) is a solid state electrical device that converts the energy of light directly into electricity by the photovoltaic effect. Photovoltaic modules provide safe, reliable, and maintenance-free, ...
The Effect Of Temperature And Electric Field On Ferroelectric Property Of Barium Titanate

Kumera, Tolessa (Ambo University, 2023-01)

Barium titanate (BaTiO3) is one of the most basic and widely used ferroelectric materials due to its high dielectric constant and low loss characteristic. The main objective of this study is investigating the effect of ...
The effect of band gap of semiconductor on the efficiency of photovoltaic solar cells

Fufa, Chemeda (Ambo University, 2023-01)

Photovoltaic technologies, with an essentially infinite energy source, large total capacity, and demonstrated cost competitiveness, are well-positioned to meet growing global demand for clean energy. The photovoltaic ...
Study Of The Effect Of Temperature On Performance Of Sofc Made From Ni-Gdc Anode, Lscf-Sdccathode, And Ysz Electrolyte

Girma, Tolossa (Ambo University, 2023-02)

The energy crisis and global warming, both of which are driven by the combustion of fossil fuels, have drawn a lot of attention to the need for researchers to identify alternative energy sources to minimize fossil fuel ...
An Optimized Quantum Harmonic Otto Heat Engine At High Temperature

Gemechis, Kitaba (Ambo University, 2022-12)

Quantum harmonic Otto heat engine cycles of a time-dependent harmonic oscillator operating under the conditions of objective (Ω) function in which the maximum efficiency is set to be ηC and the minimum efficiency(the ...
Students’ Conceptual Knowledge Development in the Concepts of Heat and Temperature Using Simulation: A case of grade nine students in Chole High School, Arsi Zone, and Oromia, Ethiopia.

Gishu, Tsegaye (Ambo University, 2022-09)

This study focused on assesses students’ conceptual knowledge development of the concepts of heat and temperature using simulation in the case of grade nine students. To achieve the aims of the study, the researcher ...
The Effect Of Temperature On Magnetic Hysteresis Properties Of Hard Magnetic Material Steel

Tesfaye, Daba (Ambo University, 2022-12)

Steel is one of the representative ferromagnetic materials with hard magnetic type. The aim of this study was modeling the effect of temperature on magnetic hysteresis loop parameters of steel, because of exceptional ...
Maximum Power Of Quantum Mechanical Carnot Engine Using The Woods-Saxon Model

Kemal, Mosisa (Ambo University, 2022-09)

Quantum mechanical Carnot engine was studied and its maximum power, as well as efficiency at maximum power were obtained by using Woods-Saxon potential for Carnot cycle which has four processes. These processes are ...
Students’ Conceptual Knowledge Development in Two dimensional Kinematics using simulation: a Case of Babicha High School, West Shawa, Oromia, Ethiopia

Girma, Megersa (Ambo University, 2022-12)

The purpose of this study was to investigate the conceptual knowledge development of students’ in two-dimensional kinematics using computer simulation in Babicha Secondary School. A quasi-experimental design was used ...
Investigation Of The Electrical Properties Of Sofc Made From Ni_Ysz Anode, Lsm_Ysz Cathode And Ysz Electrolyte

Guta, Gerema (Ambo University, 2022-09)

Solid oxide fuel cells are an environmentally friendly alternative energy source because of their high efficiency. The purpose of this work was to model the electrical properties of SOFC made from NI_YSZ anode, LSM_YSZ ...
An Optimized Heat Engine Operating Between Finite- Sized Reservoirs

Bulo, Debele (Ambo University, 2022-09)

Thermodynamics of a heat engine running between two reservoirs of finite size and with well defined temperatures that is not in equilibrium. Importantly practical, heat engines that produce useful work often operate ...
Assessing The Effectiveness, Adoption Rate And Technology Gaps Of Household Biogas Technologies In Case Of Dugda Woreda And Adami Tulu Jido Kombolcha Woreda, Oromia Regional State, Eastern Shewa

Marema, File (Ambo University, 2022-11)

In Ethiopia, the national adoption of domestic biogas technology is a relatively new development. As a result, there is a lack of empirical data regarding the effectiveness, adoption rate, and technical gap. Therefore, ...
Modeling The Effect Of Temperature On The Performance Of Silicon Solar Cell

Gobine, Kenea (Ambo University, 2022-10)

In order to meet the demand for clean, affordable energy in the context of environmental concerns, new technologies in energy conversion must be applied because of human re quirements for energy. One of the sources of ...
Performance Analysis Of Optimization Of Quantum Harmonic Otto Refrigerator

Gemtesa, Garomsa (Ambo University, 2022-09)

Quantum Otto refrigerator in adiabatic driving, for both high-temperature regime and low temperature regime, can be mapped to Feynman's ratchet and pawl model. Finite time cycle period for a quantum Otto machine implies ...
Thin Film Solar Cells And Its Application

Saketa, Fekadu (Ambo University, 2022-12)

Solar cells are electronic devices that convert sunlight directly into electricity. Since its invention in 1954 at Bell Telephone Laboratories, in modern form, solar cells are among the fastest growing renewable energy ...
Temperature Dependence Of Magnetization Of Cobalt Ferrite (Cofe2o4)

Wakgari Endalew, Wakgari Endalew (Ambo University, 2022-12)

Now days, the studies of Nano particles of magnetic oxides have receive much attention because of their promising technological advantages for application in medicine, sensors, magnetic recordings, catalysts. Among ...
Coexistence of Superconductivity and Ferromagnetism in ErRh4B4

Worku, Ararsa (Ambo University, 2022-08)

In this thesis work, the interplay of magnetism and superconductivity in ErRh4B4 was investigated theoretically. Starting from a model Hamiltonian developed for the system and employing the equation of motion approach ...

Now showing items 41-60 of 79

Search AmbouIR

Advanced Search

Browse

Some of AUIR Collections
This Collection
- By Issue Date
- Authors
- Titles
- Subjects

Recently added

Theses and Dissertations of this Department: Recent submissions

Search AmbouIR

Browse

Some of AUIR Collections

This Collection

My Account