A contribution to the understanding of phase equilibria (structure of Sr[sub 7]ZrSi[sub 6]O[sub 21])

Journal Article · Fri Jul 01 00:00:00 EDT 1994 · Materials Research Bulletin; (United States)

DOI:https://doi.org/10.1016/0025-5408(94)90194-5· OSTI ID:7277572

Plaisier, J R; Graaff, R A.G. de; Ijdo, D J.W. ^[1]; Huntelaar, M E ^[2]

---

1. Leiden Univ., Leiden (Netherlands). Inst. of Chemistry
2. Netherlands Energy Research Foundation, Patten (Netherlands)

The crystal structure of Sr[sub 7]ZrSi[sub 6]O[sub 21] is described. Sr[sub 7]ZrSi[sub 6]O[sub 21], M[sub r] = 1,209.10, triclinic, P[bar 1], a = 8.398(3)[angstrom], b = 8.435(2)[angstrom], c = 8.445(3)[angstrom], [alpha] = 106.13(3)[degree], [beta] = 106.49(3)[degree], [gamma] = 105.90(3)[degree], V = 509.0(3)[angstrom][sup 3], Z = 1, D[sub x] = 3.944(3) Mgr/m[sup 3]. [gamma](MoK[alpha]) = 0.71069[angstrom], F(000) = 558, room temperature, final R = 0.073 for 1,145 observed reflections. The structure is pseudo rhombohedral, R[bar 3], a[sub hex] = 13.474[angstrom], c[sub hex] = 9.714[angstrom], Z = 3. The crystal structure determination establishes the formula for the compound earlier described in phase equilibria studies as Sr[sub 6]ZrSi[sub 5]O[sub 18].

• OSTI ID: 7277572
• Journal Information: Materials Research Bulletin; (United States), Journal Name: Materials Research Bulletin; (United States) Vol. 29:7; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DATA
DIFFRACTION
EXPERIMENTAL DATA
INFORMATION
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
SCATTERING
SILICON COMPOUNDS
SILICON OXIDES
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
TRIGONAL LATTICES
X-RAY DIFFRACTION
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES