Electron energy loss spectroscopy of TiC,ZrC and HfC |
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| Institution: | 1. Immunology-Oncology Section, Maisonneuve-Rosemont Hospital, Montréal, Québec, H1T 2M4, Canada;2. Département de Microbiologie, Infectiologie et Immunologie, Université de Montréal, Montréal, Québec, H3C 3J7, Canada;3. Mitacs, Computer Research Institute of Montreal, Montréal, Québec, H3N 1M3, Canada;4. Division of Rheumatology, Department of Medicine, Research Institute of the McGill University Health Centre, Montréal, Québec, H3G 1A4, Canada;5. Division of Immunology and Viral Infections, Institut de Recherches Cliniques de Montréal, Montréal, Québec, H2W 1R7, Canada;6. Département de Médecine, Université de Montréal, Montréal, Québec, H3T 1J4, Canada;1. Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;2. School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China;1. Department of Mathematics and Actuarial Science, Indiana University Northwest, 3400 Broadway, Gary, IN 46408, USA;2. Department of Physics, Indiana University Northwest, 3400 Broadway, Gary, IN 46408, USA;3. Physics & Applied Mathematics Unit, Indian Statistical Institute, Kolkata 700108, India;1. Special Center for Nano Sciences, Jawaharlal Nehru University, New Delhi, India;2. Spintronics and Magnetic Standards Lab, CSIR-NPL, New Delhi, India |
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| Abstract: | The dielectric properties of commercial TiC, ZrC and HfC powders were determined by analyzing the low loss region of the EELS spectrum in a transmission electron microscope. From these data, the optical joint density of states (OJDS) were obtained by Kramers–Kronig analysis. As maxima observed in the OJDS spectra are assigned to interband transitions across the energy gap, these spectra can be interpreted on the basis of existing energy-band calculations. Comparison between experimental results and theory shows good agreement. |
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