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On the Magnetic and M¨ossbauer Spectroscopic Characterization of EuPd2

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On the Magnetic and M¨ossbauer Spectroscopic Characterization of EuPd

2

Sb

2

Inga Schellenberg, Matthias Eul, and Rainer P¨ottgen

Institut f¨ur Anorganische und Analytische Chemie, Westf¨alische Wilhelms-Universit¨at M¨unster, Corrensstraße 30, 48149 M¨unster, Germany

Reprint requests to R. P¨ottgen. E-mail: pottgen@uni-muenster.de Z. Naturforsch.2010,65b,18 – 22; received October 2, 2009

The CaBe2Ge2-type antimonide EuPd2Sb2(P4/nmm,a= 462.43(7),c= 1056.1(2) pm) was syn- thesized by induction melting of the elements in a sealed tantalum tube. Temperature-dependent mag- netic susceptibility measurements have revealed Curie-Weiss behavior with an experimental magnetic moment of 7.93(1)µB/Eu atom, indicating stable divalent europium. EuPd2Sb2orders antiferromag- netically atTN= 4.5(2) K as is also evident from almost full hyperfine field splitting (Bh= 19.5 T) in the151Eu M¨ossbauer spectrum at 4.2 K.

Key words:Europium, Antimonides, M¨ossbauer Spectroscopy

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