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Schlagwörter:
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Zusammenfassung:
The ternary phase YbPdxGa11-x has been synthesized from the elements by
high frequency argon melting. An extended homogeneous region at 600
degrees C has been established from X-ray powder data for 2.3 less than
or equal to x less than or equal to 3.4. The crystal structure of
YbPd3Ga8 has been derived from X-ray single crystal counter data:
partially ordered BaHg11-type, space group Pm3m(O-h(1), No. 221), a=
8.4346(5)Angstrom:R-p = 0.054 for 176 independent reflections with I>2
sigma.
YbPdxGa11-x samples are temperature independent Pauli-type paramagnets
for x less than or equal to 3. Increasing the palladium content to x>3
leads to an enhanced f-d electron interaction, and a variation of the
magnetic moment due to valence instabilities (4f(14)-->4f(13)) is
established using X-ray absorption spectroscopy.
