Accession Number : AD0640952

Title :   CRYSTAL CHEMISTRY STUDIES.

Descriptive Note : Quarterly rept. no. 5, 14 May-13 Aug 66,

Corporate Author : PENNSYLVANIA STATE UNIV UNIVERSITY PARK MATERIALS RESEARCH LAB

Personal Author(s) : Roy,Rustum ; mcCarthy,G. J. ; Muller,O. ; Rault,M. ; White,W. B.

Report Date : OCT 1966

Pagination or Media Count : 16

Abstract : Additional measurements on the rare-earth rhenium oxides were made. The resistivity (approx. 20,000 ohm-cm) and evidence of some photoconductivity were found for single crystal Beta-Nd2ReO5. The densities of Yb2ReO5 (9.79 g/cc) and Beta-Nd2ReO5 (8.14 g/cc) were measured. The systems MoO3-ReO3 and WO3-ReO3 were examined with the conclusion that no solid solution exists between these components. An attempt at single crystal growth of ReO3 was unsuccessful. Systematic work was started in the system EuO-Eu2O3-TiO-TiO2. The compounds EuTiO3, Eu2Ti2O7, and a new compound Eu2TiO5 (possibly) have thus far been detected. Additional runs have been made in the systems MgO-Cr2O3-O, CdO-Cr2O3-O, and NiO-Cr2)3-O. High oxygen pressure studies of the system Cr-Fe-O have been resumed. (Author)

Descriptors :   (*CRYSTALS, CHEMICAL PROPERTIES), (*RARE EARTH COMPOUNDS, PHYSICAL PROPERTIES), (*RHENIUM COMPOUNDS, PHYSICAL PROPERTIES), (*OXIDES, PHASE STUDIES), ELECTRICAL RESISTANCE, PHOTOCONDUCTIVITY, DENSITY, SOLID SOLUTIONS, CRYSTAL GROWTH, NEODYMIUM COMPOUNDS, YTTERBIUM COMPOUNDS, MOLYBDENUM COMPOUNDS, TUNGSTEN COMPOUNDS, EUROPIUM COMPOUNDS, TITANIUM COMPOUNDS, MAGNESIUM COMPOUNDS, CHROMIUM COMPOUNDS, CADMIUM COMPOUNDS, NICKEL COMPOUNDS

Subject Categories : Inorganic Chemistry
      Crystallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE