Unit cell parameters and densities of non-doped and 2 mol% Y2O3 doped orthorhombic (high pressure form) ZrO2

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Authors:Toraya, Hideo; Ohtaka, Osamu; Kume, Shoichi
Author Affiliations:Primary:
Nagoya Inst. Technol., Asagaoka, Tajimi, Japan
Osaka Univ., Japan
Volume Title:Mineralogical Journal
Source:Mineralogical Journal, 13(8), p.500-504. Publisher: Nippon Kobutsu Gakkai; Japan Publications Trading Co., Ltd., Tokyo, Japan. ISSN: 0544-2540
Publication Date:1987
Note:In English. 9 refs.; illus. incl. 3 tables
Summary:Unit cell parameters of non-doped ZrO2 (monoclinic + orthorhombic: high-P form) and 2 mol. % Y2O3 doped ZrO2 (monoclinic + orthorhombic + tetragonal) samples obtained by high-P experiments were refined, together with those of starting materials, by the technique of whole-powder-pattern fitting without reference to a structural model. The refined cell parameters are a 5.1465, b 5.2112, c 5.3110 Angstrom, beta 99.219 degrees (monoclinic), a 5.0393, b 5.2580, c 5.0885 Angstrom (orthorhombic), a 3.5944, c 5.1911 Angstrom (tetragonal) for non-doped ZrO2; a 5.1605, b 5.2117, c 5.3203 Angstrom, beta 99.050 degrees (monoclinic), a 5.0456, b 5.2619, c 5.0967 Angstrom (orthorhombic), a 3.6053, c 5.1781 Angstrom (tetragonal) for doped ZrO2. The monoclinic arrow right orthorhombic transformation of ZrO2 accompanies the increase of density by 0.25-0.26 g/cm3. The tetragonal form has a slightly higher density than the orthorhombic form; the difference between the two phases is only 0.03 g/cm3. [T.O.]
Subjects:Baddeleyite; Crystal structure; Crystal systems; Density; Experimental studies; High pressure; Lattice parameters; Minerals; Monoclinic system; Orthorhombic system; Oxides; Pressure; Unit cell; Baddelleyite; Tetragonal system; Yttrium trioxide
Abstract Numbers:90M/2971
Record ID:1988027423
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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