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Effective Ionic Radius of Y 3+ Determined from Lattice Parameters of Fluorite‐Type HfO 2 and ZrO 2 Solid Solutions
Author(s) -
Kim DaeJoon,
Hyun SangHoon,
Kim SeungGoo,
Yashima Masatomo
Publication year - 1994
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1994.tb07035.x
Subject(s) - fluorite , ionic radius , solid solution , lattice (music) , ionic bonding , lattice constant , doping , radius , materials science , chemistry , analytical chemistry (journal) , crystallography , inorganic chemistry , ion , physics , optics , metallurgy , chromatography , computer security , optoelectronics , organic chemistry , computer science , acoustics , diffraction
Fluorite type HfO 2 and ZrO 2 solid solutions were prepared by doping with 8 to 14 mol% of Ho 2 O 3 and Y 2 O 3 , and their lattice parameters were determined. In both HfO 2 and ZrO 2 systems, the lattice parameters of the solid solutions containing Ho 2 0 3 were consistently greater than those containing the same amounts of Y 2 O 3 . This indicated that the ionic radius of Ho 3+ was larger than that of Y 3+ in the fluorite structure solid solutions. The effective ionic radius of Y 3+ in eightfold coordination was estimated to be 0.1011 nm by using the measured lattice parameters and the empirical equations to predict the lattice parameters of the fluorite‐type solid solutions.
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