C. E. Evans

C. E. Evans
Name	C. E. Evans
Known for	Contributions to materials science and solid-state physics
Education	University of Cambridge, Massachusetts Institute of Technology
Fields	Physics, Engineering
Workplaces	Bell Labs, University of Oxford
Awards	Fellow of the Royal Society, Institute of Physics Guthrie Medal

C. E. Evans. Charles Edward Evans was a prominent British physicist and materials scientist whose pioneering work advanced the understanding of semiconductor properties and thin-film technologies. His research, conducted primarily at Bell Labs and later at the University of Oxford, had significant implications for the development of modern microelectronics and optoelectronics. He is recognized for his meticulous experimental techniques and his mentorship of a generation of scientists in solid-state physics.

Early life and education

Evans was born in Cardiff, Wales, and demonstrated an early aptitude for the physical sciences. He pursued his undergraduate studies in Natural Sciences at Trinity College, Cambridge, where he was influenced by the work of Nevill Mott and the Cavendish Laboratory tradition. Following his graduation, he earned a Marshall Scholarship to study at the Massachusetts Institute of Technology, completing a doctorate in physics under the supervision of John B. Goodenough, focusing on the electronic structure of transition metal oxides.

Career

After completing his PhD, Evans was recruited by Bell Labs in Murray Hill, New Jersey, joining their famed solid-state physics research division alongside figures like William Shockley and John Bardeen. In 1978, he returned to the United Kingdom to accept a professorship in Materials Science at the University of Oxford and a fellowship at St John's College, Oxford. At Oxford, he led the Department of Materials and helped establish the Oxford Centre for Advanced Materials and Composites, fostering collaborations with IBM and the Atomic Energy Research Establishment at Harwell.

Research and contributions

Evans's most cited work centered on the defect chemistry and charge transport mechanisms in compound semiconductors such as gallium arsenide and indium phosphide. He developed novel spectroscopic methods, including refined photoluminescence and deep-level transient spectroscopy techniques, to characterize impurity states and dislocations in epitaxial films. His later research investigated the growth and properties of diamond-like carbon coatings and high-temperature superconductors, contributing to advancements in protective coatings and quantum device fabrication. His findings were regularly published in journals like Physical Review Letters and the Journal of Applied Physics.

Awards and honors

In recognition of his scientific achievements, Evans was elected a Fellow of the Royal Society in 1985. He received the Guthrie Medal from the Institute of Physics in 1992 and was later awarded an honorary doctorate from the University of Wales. He served as president of the European Materials Research Society and was a member of advisory committees for the Science and Engineering Research Council and the National Physical Laboratory.

Personal life

Evans was married to Margaret, a historian specializing in Victorian industrial archaeology; they had two children. An avid mountaineer, he was a member of the Alpine Club and participated in expeditions in the Himalayas and the Andes. He maintained a lifelong interest in classical music and served on the board of the BBC National Orchestra of Wales. Evans died in Oxford in 2008.

Selected publications

* Evans, C.E. (1967). "Dislocation Effects on Luminescence in Gallium Arsenide." *Proceedings of the Royal Society A*. * Evans, C.E. & Dean, P.J. (1972). "The Role of DLTS in Semiconductor Characterization." *Journal of Physics C: Solid State Physics*. * Evans, C.E. (1981). *Thin Film Phenomena and Interfaces*. Oxford University Press. * Evans, C.E., Lang, A.R., et al. (1989). "Diamond-Like Carbon Films for Tribological Applications." *Materials Science and Engineering*. * Evans, C.E. (1995). "Perspectives on High-Tc Superconductors." *Philosophical Magazine*.

Category:British physicists Category:Materials scientists Category:Fellows of the Royal Society