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Raman spectroscopy of tetragonal zirconia solid solutions

Journal Article · · Journal of the American Ceramic Society; (United States)
OSTI ID:6187642
;  [1];  [2]
  1. Korea Inst. of Science and Technology, Seoul (Korea, Republic of). Ceramics Div.
  2. Ewha Womans Univ., Seoul (Korea, Republic of). Dept. of Physics
Raman spectra of tetragonal zirconia were studied for the systems ZrO[sub 2]-Y[sub 2]O[sub 3], ZrO[sub 2]-CeO[sub 2], ZrO[sub 2]-Y[sub 2]O[sub 3]-Nb[sub 2]O[sub 5], and ZrO[sub 2]-Y[sub 2]O[sub 3]-Ta[sub 2]O[sub 5]. There was no change in the Raman bands for tetragonal zirconia in the ZrO[sub 2]-Y[sub 2]O[sub 3] system as a function of Y[sub 2]O[sub 3] content. On the other hand, in the ternary systems, the Raman lines corresponding to the stretching modes of two sets of cation-oxygen bonds shifted to greater wave number as either Nb[sub 2]O[sub 5] or Ta[sub 2]O[sub 5] content increased in Y[sub 2]O[sub 3]-stabilized tetragonal zirconia. This difference was interpreted by local bonding environments of the pentavalent cations, which were supposed to occupy tetrahedral sites in tetragonal zirconia solid solutions.
OSTI ID:
6187642
Journal Information:
Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 76:8; ISSN 0002-7820; ISSN JACTAW
Country of Publication:
United States
Language:
English