Engineering magnets for a cleaner future
Ugochukwu Philip Ochieze is exploring the creation of magnets using common materials
The United States is heavily reliant on imported rare-earth materials to make permanent magnets. A materials science student at the University of Cincinnati is studying how to use common materials to create permanent magnets, eliminating the need for expensive and scarce rare-earth materials. Pursuing his doctoral degree at UC, Ugochukwu Philip Ochieze was named Graduate Student Engineer of the Month by the College of Engineering and Applied Science.
Why did you choose UC? What drew you here?
Ugochukwu Philip Ochieze is a materials science and engineering doctoral student at UC. Photo/Provided
I chose the University of Cincinnati because of its strong research ecosystem in materials science and its close alignment with my interests in alloy design, phase transformations, and materials processing. Beyond the technical fit, UC's collaborative environment and strong industry connections make it an ideal place to develop impactful, real-world solutions that bridge the gap between science and engineering. I joined the program in 2022 with confidence that a PhD from such a distinguished institution would open doors wherever I choose to go. More importantly, I was drawn to the resources, mentorship, and research infrastructure available at UC, which provide the foundation I need to grow and flourish as a researcher.
Why did you choose your field of study?
I chose materials science and engineering because I am fascinated by how atomic-scale structure governs macroscopic properties and real-world applications. My interest in the field began in childhood, driven by a natural curiosity about materials around me. I was particularly drawn to stones and rocks. Their shapes, textures, and variations were so intriguing that I would collect, classify, and even try to arrange them into different patterns. This early curiosity was further shaped by my family background, as my father owned a machine shop and has a strong foundation in materials and metallurgical engineering. Spending time in his workshop exposed me to practical processes and sparked a deeper desire to understand the principles behind what I observed. Over time, this curiosity evolved into a focused academic interest in mining, alloy design, materials processing, and characterization.
Briefly and simply describe your research work. Why does it interest you?
Ugochukwu Philip Ochieze's research focuses on the creation of common material magnets. Photo/Provided
My research at UC focuses on understanding the effects of phosphorus on phase transformations in iron-nickel alloys, with the goal of enabling the bulk synthesis of rare-earth-free tetrataenite permanent magnets. Foundational studies conducted over 50 years ago showed that phosphorus can enhance diffusion in iron-nickel, an important factor given the inherently sluggish diffusion in this system due to its magnetic and chemical complexity. Additionally, meteorites, which naturally contain the ordered tetrataenite phase essential for high-performance permanent magnets are composed primarily of iron and nickel and show the presence of phosphide needles. My aim is to evaluate how dilute phosphorus additions (0.25-0.5 atomic percent) influence interdiffusion and magnetic behavior in the iron-nickel system by integrating advanced experimental techniques, such as dilatometry, diffusion studies, electron microscopy, X-ray diffraction, and neutron scattering, with CALPHAD-based computational modeling. I am fascinated by this research because it will help to deepen my understanding of diffusion-controlled transformations in iron-nickel-phosphorus alloys and enable the design of next-generation magnetic materials for use in electric vehicles and wind turbines. This provides strong motivation to investigate processing pathways for synthesizing similar structures using earth-abundant, rare-earth-free elements, thereby addressing the challenge of U.S. reliance on imported critical rare-earth-based materials required for making permanent magnets. Beyond this primary project, I have also contributed to research on the mechanical properties and oxidation behavior of refractory complex concentrated alloys particularly the studies on NbTi(CoCrNi) systems.
What are some of the most impactful experiences during your time at UC?
My graduate experience has been centered on advancing knowledge in metallurgy, materials design, characterization, and high-temperature alloy systems. I have gained impactful experience through my research on the effects of phosphorus in iron-nickel alloys, generating results that may contribute to refining the existing iron-nickel-phosphorus phase diagram. I have presented my findings at conferences and had the opportunity to conduct neutron experiments at the historic Oak Ridge National Laboratory in Tennessee. My earlier work on the crystallographic analysis of NbTi(CoCrNi) refractory complex concentrated alloys was given second place in the Electron Microscopy category of the 2024 International Metallographic Contest. Beyond research, my experience as a graduate Teaching Assistant has been equally rewarding. I supported instruction in courses such as Heat Transfer, Materials Selection for Design, and Strength of Materials Lab while mentoring undergraduate students. I was particularly inspired by the opportunity to lead a class session on energy in Africa, using Nigeria as a case study.
UC's collaborative environment and strong industry connections make it an ideal place to develop impactful, real-world solutions that bridge the gap between science and engineering
Ugochukwu Philip Ochieze, Graduate student
What are a few of your accomplishments of which you are most proud?
I am proud to have been part of the team that won the People's Choice Award for the university at the 2023 Forging Industry Educational Research Foundation Forging Fair, which created opportunities for grants and additional recognition for the Department of Mechanical, Materials, and Industrial Engineering. I have also trained multiple students in the use of key laboratory equipment and supported the Bearcats Baja Racing team by machining custom wheel hubs and gear couplings using electrical discharge machining for their senior design project and racing competition. In addition, I contributed to the CEAS graduate student orientation, where I helped welcome new students alongside graduate peers and administrative staff, and I have also served as a judge at the CEAS EXPO.
When do you expect to graduate? What are your plans after earning your degree?
I expect to graduate in summer 2027, pending the completion of my PhD dissertation. After earning my degree, I plan to continue pursuing both research and teaching. My goal is to either gain industry experience for a few years before transitioning into academia, where I can combine practical industrial insights with academic research and teaching, or to contribute to advanced research by working at a national laboratory.
Do you have any other hobbies, experiences, or involvements you want to share?
I have always enjoyed playing soccer since childhood, and I continue to play twice a week. Recently, I also started playing tennis with friends and I enjoy games such as chess and Monopoly. Beyond academics and sports, I value spending quality time with my spouse and baby. I am also an active member of the UC Nigerian Students Association and the UC Forging Club, where I engage and build connections with fellow students.
Featured image at top: Philip Ochieze's research surrounds the creation of magnets using common materials. Photo/CEAS Marketing
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