Jose Edgar Alfonso Orjuela

National University of Colombia Colombia

Jose Edgar Alfonso Orjuela earned his bachelor’s degree in Physics in 1987 and Magister degree in Physics in 1993; both titles were from Universidad Nacional de Colombia, and his PhD degree in Physics in 1997 was from Universidad Autónoma de Madrid (Spain). He has been working in materials science, especially in oxides of molybdenum and lithium niobate doped with rare earths. In these materials, he has studied the thermal coefficient expansion, luminescence emission, and magnetic behavior. His other works have focused on electrical and optical properties of materials grown in thin films. Currently, he is growing multifunctional films in order to characterize their optical and electrical properties.

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Latest work with IntechOpen by Jose Edgar Alfonso Orjuela

Rare earth elements have significant physical and chemical properties, which have been made indispensable in many magnetic, electronic, and optical applications. For instance, rare earth magnets have high magnetic intensity that can be retained at high temperatures, making them ideal for aerospace applications. Moreover, rare earth elements allow to fabricate faster, smaller, and lighter devices such as cell phones and hard drives. They are also important for in-ear headphones, microphones, loudspeakers, optical fibers, smartphones, and tablet computers. All these technological possibilities have made sure that the rare earth elements are part of the daily life. Therefore, this book has a main objective to let the readers know useful information about the rare earth elements that possibly allow development of the researches in different fields of science where the rare earth elements are used.

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