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DTSTART:20070311T020000
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UID:b3872c7d-754a-49d7-9245-0f6e1f4906e6.215619@calendar.missouristate.edu
CREATED:20210222T175540Z
LAST-MODIFIED:20210222T175540Z
LOCATION:Meyer Library\, Duane G. 101
SUMMARY:Chemistry Seminar - Daryl Meyer\, MSU Graduate Student
DESCRIPTION:Investigations into the crystal structure of Re-Ru-Si compound
 s\n\n\nSemiconducting silicides are of particular interest as potential t
 hermoelectric materials. Here we have combined two known semi conducting 
 silicides\, ruthenium silicide (Ru2Si3) and rhenium silicide (ReSi1.75) a
 s the ternary compound Re1-xRuxSi1.75-0.25x in varying ratios of Ru:Re.\n
 \n\nThey were then analyzed by powder x-ray diffraction\, then by single-
 crystal diffraction. Powder x-ray diffraction revealed probable lattice p
 arameters and atomic placement within the unit cells with the ruthenium s
 ilicide structure as the dominant phase. Samples displaying the best crys
 talline structures were then analyzed by single-crystal diffraction to de
 termine their actual crystalline structure as incommensurate Nowotny chim
 ney-ladder structures.
X-ALT-DESC;FMTTYPE=text/html:&lt;html&gt;&lt;head&gt;&lt;title&gt;&lt;/title&gt;&lt;/head&gt;&lt;body&gt;&lt;p al
 ign="center"&gt;&lt;b&gt;&lt;span&gt;Investigations into the crystal structure of Re-Ru-
 Si compounds&lt;/span&gt;&lt;/b&gt;&lt;/p&gt;\n&lt;p&gt;&lt;span&gt;&lt;/span&gt;Semiconducting silicides are
  of particular interest as potential thermoelectric materials. Here we ha
 ve combined two known semi conducting silicides\, ruthenium silicide (Ru&lt;
 sub&gt;2&lt;/sub&gt;Si&lt;sub&gt;3&lt;/sub&gt;) and rhenium silicide (ReSi&lt;sub&gt;1.75&lt;/sub&gt;) as 
 the ternary compound Re&lt;sub&gt;1-x&lt;/sub&gt;Ru&lt;sub&gt;x&lt;/sub&gt;Si&lt;sub&gt;1.75-0.25x&lt;/sub
 &gt; in varying ratios of Ru:Re.&lt;/p&gt;\n&lt;p&gt;They were then analyzed by powder x
 -ray diffraction\, then by single-crystal diffraction. Powder x-ray diffr
 action revealed probable lattice parameters and atomic placement within t
 he unit cells with the ruthenium silicide structure as the dominant phase
 . Samples displaying the best crystalline structures were then analyzed b
 y single-crystal diffraction to determine their actual crystalline struct
 ure as incommensurate Nowotny chimney-ladder structures.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;
DTSTART;TZID=America/Chicago:20210217T153500
DTEND;TZID=America/Chicago:20210217T163500
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