Published June 1981 | Version v1
Journal article Metadata-only

Preparation and characterization of the ternary compounds BaRE2F8 with RE = Dy - Lu and Y

Creators

  • 1. Freiburg Univ. (Germany, F.R.)
  • 2. Heidelberg Univ. (Germany, F.R.). Mineralogisch-Petrographisches Inst.

Description

Systematic phase investigations were carried out on the systems BaF2-REF3. At the composition (Ba,RE)Fsub(2.667) there exist intermediate compounds BaRE2F8 only in the case of RE = Dy - Lu and Y which crystallize monoclinic with the space group C2/m. Thermal analyses revealed that BaYb2F8 and BaLu2F8 have in addition a high-temperature form somewhat below the melting point. These modifications can be quenched to room-temperature and crystallize orthorhombic with the space group Pmmn. The lattice parameters are reported for all phases as well as indexed d values for both BaLu2F8 forms. (author)

Additional details

Additional titles

Original title (German)
Darstellung und Eigenschaften der ternaeren Verbindungen BaSE

Publishing Information

Journal Title
Z. Anorg. Allg. Chem.
Journal Volume
477
Series
Z. Anorg. Allg. Chem.
Journal Page Range
133-138
ISSN
0044-2313

INIS

Country of Publication
Germany
Country of Input or Organization
German Democratic Republic
INIS RN
13653184
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
BARIUM FLUORIDES; CHEMICAL PREPARATION; CRYSTAL-PHASE TRANSFORMATIONS; DYSPROSIUM FLUORIDES; ERBIUM FLUORIDES; EXPERIMENTAL DATA; HOLMIUM FLUORIDES; LATTICE PARAMETERS; LUTETIUM FLUORIDES; MONOCLINIC LATTICES; ORTHORHOMBIC LATTICES; PHASE STUDIES; SPACE GROUPS; THULIUM FLUORIDES; VERY HIGH TEMPERATURE; X-RAY DIFFRACTION; YTTERBIUM FLUORIDES; YTTRIUM FLUORIDES
Descriptors DEC
ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; DATA; DIFFRACTION; DYSPROSIUM COMPOUNDS; ERBIUM COMPOUNDS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; HOLMIUM COMPOUNDS; INFORMATION; LUTETIUM COMPOUNDS; NUMERICAL DATA; PHASE TRANSFORMATIONS; RARE EARTH COMPOUNDS; SCATTERING; SYMMETRY GROUPS; SYNTHESIS; THULIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; YTTERBIUM COMPOUNDS; YTTRIUM COMPOUNDS