A new homologous series Sr sub n minus 1 Cu sub n+1 O sub 2n found in the SrO-CuO system treated under high pressure

Journal Article · Thu Oct 31 23:00:00 EST 1991 · Journal of Solid State Chemistry; (United States)

DOI:https://doi.org/10.1016/0022-4596(91)90394-W· OSTI ID:7163544

Hiroi, Z; Azuma, M; Takano, M; Bando, Y ^[1]

---

1. Kyoto Univ. (Japan)

A new homologous series of high-pressure phases, Sr{sub n{minus}1} Cu{sub n+1} O{sub 2n} (n = 3, 5, . . . ), were found in the SrO-CuO system treated at 6 GPa and 1373-1573 K. These crystallize in orthorhombic structures of space group Cmmm with unit-cell parameters of a {approximately} 3.9 {angstrom}, b {approximately} n x a, and c {approximately} 3.5 {angstrom}. Along the c-axis Cu{sub 1+1/n}O{sub 2} sheets alternate with Sr{sub 1{minus}1/n} sheets without oxygen. Within the Cu-O sheets, Cu-O double chains is b/2. The serial chemical composition and structure are interpreted as resulting from a shear operation upon the high-pressure form of SrCuO{sub 2} (n = {infinity}).

• OSTI ID: 7163544
• Journal Information: Journal of Solid State Chemistry; (United States), Journal Name: Journal of Solid State Chemistry; (United States) Vol. 95:1; ISSN 0022-4596; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
BOND LENGTHS
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
DIMENSIONS
ELECTRON DIFFRACTION
ELECTRON MICROSCOPY
LENGTH
MATERIALS
MICROSCOPY
ORTHORHOMBIC LATTICES
OXIDES
OXYGEN COMPOUNDS
SCATTERING
SEMICONDUCTOR MATERIALS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
STRUCTURAL CHEMICAL ANALYSIS
SYNTHESIS
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K
TRANSITION ELEMENT COMPOUNDS
VERY HIGH PRESSURE
X-RAY DIFFRACTION