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The design of a reflectance spectrometer and its calibration using SrTiO3 /

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dc.contributor.author Klassen, J. Robert. en_US
dc.date.accessioned 2009-07-14T19:42:03Z
dc.date.available 2009-07-14T19:42:03Z
dc.date.issued 2004-07-14T19:42:03Z
dc.identifier.uri http://hdl.handle.net/10464/2335
dc.description.abstract A new Ultra-High Vacuum (UHV) reflectance spectrometer was successfully designed, making use of a Janis Industries ST-400 sample cryostat, IR Labs bolometer, and Briiker IFS 66 v/S spectrometer. Two of the noteworthy features include an in situ gold evaporator and internal reference path, both of which allow for the experiment to progress with a completely undisturbed sample position. As tested, the system was designed to operate between 4.2 K and 325 K over a frequency range of 60 - 670 cm~^. This frequency range can easily be extended through the addition of appUcable detectors. Tests were performed on SrTiOa, a highly ionic incipient ferroelectric insulator with a well known reflectance. The presence and temperatmre dependence of the lowest frequency "soft" mode were measured, as was the presence of the other two infrared modes. During the structural phase transition from cubic to tetragonal perovskite, the splitting of the second phonon mode was also observed. All of the collected data indicate good agreement with previous measurements, with a minor discrepency between the actual and recorded sample temperatures. en_US
dc.language.iso eng en_US
dc.publisher Brock University en_US
dc.subject Reflectance spectroscopy. en_US
dc.subject Spectrometer en_US
dc.subject Spectrometer en_US
dc.title The design of a reflectance spectrometer and its calibration using SrTiO3 / en_US
dc.type Electronic Thesis or Dissertation en_US
dc.degree.name M.Sc. Physics en_US
dc.degree.level Masters en_US
dc.contributor.department Department of Physics en_US
dc.degree.discipline Faculty of Mathematics and Science en_US


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