Effective ionic radius of Y[sup 3+] determined from lattice parameters of fluorite-type HfO[sub 2] and ZrO[sub 2] solid solutions

Journal Article · Tue Feb 01 04:00:00 EST 1994 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1994.tb07035.x· OSTI ID:7207493

Kim, D J ^[1]; Hyun, S H; Kim, S G ^[2]; Yashima, Masatomo ^[3]

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1. Korea Inst. of Science and Technology, Seoul (Korea, Republic of). Ceramics Division
2. Yonsei Univ., Seoul (Korea, Republic of). Dept. of Ceramic Engineering
3. Tokyo Inst. of Technology, Yokohama (Japan). Research Lab. of Engineering Materials

Fluorite-type HfO[sub 2] and ZrO[sub 2] solid solutions were prepared by doping with 8 to 14 mol% of Ho[sub 2]O[sub 3] and Y[sub 2]O[sub 3], and their lattice parameters were determined. In both HfO[sub 2] and ZrO[sub 2] systems, the lattice parameters of the solid solutions containing Ho[sub 2]O[sub 3] were consistently greater than those containing the same amounts of Y[sub 2]O[sub 3]. This indicated that the ionic radium of Ho[sup 3+] was larger than that of Y[sup 3+] in the fluorite structure solid solutions. The effective ionic radius of Y[sup 3+] in eightfold coordination was estimated to be 0.1011 nm by suing the measured lattice parameters and the empirical equations to predict the lattice parameters of the fluorite-type solid solutions.

• OSTI ID: 7207493
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 77:2; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
CHALCOGENIDES
DOPED MATERIALS
HAFNIUM COMPOUNDS
HAFNIUM OXIDES
LATTICE PARAMETERS
MATERIALS
OXIDES
OXYGEN COMPOUNDS
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES