Solid state reactions and some physical properties of reduced europium niobates Eu{sub x}NbO{sub y} (0.5 {le}x{le}2)
Conference
·
OSTI ID:518591
- Japan Atomic Energy Research Institute, Ibaraki (Japan); and others
A series of new perovskite-type reduced europium niobates Eu{sub x}NbO{sub Y} (0.5{le}x{le}0) were prepared by conventional methods. Their formation process. structural and physical properties were studied by means of {sup 151}Eu Moessbauer spectroscopy, powder XRD and EPMA methods, electrical conductivity and magnetic susceptibility measurements. etc. Several unique features of these systems were found: a much higher reduction rate of Eu{sup 3+} to Eu{sup 2+} by Nb oxides (NbO, Nb{sub 2}O{sub 3}, NbO{sub 2}) than that by Nb metal; extremely large isomer shifts for Eu{sup 3+}; and spin glass-like behavior at temperatures below 6K.
- OSTI ID:
- 518591
- Report Number(s):
- CONF-960367--
- Country of Publication:
- United States
- Language:
- English
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