Ytria or Yttria: How To spell?
The word Ytria is misspelled against Yttria, a noun meaning "The oxide, Y2O3, or earth, of yttrium."
Yttria has double "tt" is mispronounced as "t"Remember double 'TT' in between the strings y & ria which should not be misspelled with single 'T'
Wrong Spelling:  y-t-ria  Correct Spelling:  y-tt-ria 
Find more wrongly spelled words of Yttria to spell it well.