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|Title:||Unusual Electric Field Gradient Variation in the NpPd2Ge2 Compound|
|Authors:||GACZYNSKI Piotr; COLINEAU Eric; WASTIN Franck; BOULET P.; REBIZANT J.; CACIUFFO Roberto|
|Citation:||Journal of Physics - Conference Series vol. 273 no. 1 p. 012022 (1-4)|
|Publisher:||Institute of Physics (IOP)|
|JRC Publication N°:||JRC62611|
|ISSN:||1742-6588 (print), 1742-6596 (online)|
|Type:||Contributions to Conferences|
|Abstract:||NpPd2Ge2 has been studied by 237Np Moessbauer spectroscopy between 4.2 K and 80 K. The value of the isomer shift suggests a Np3+ electronic configuration. The low temperature spectra provide a value of 2.10 μB for the magnetic ordered moment on the Np site. These values suggest a rather localized character of the 5f electrons in this system. The magnetic transition around 60 K is accompanied by a large increase of the quadrupolar interaction that is evidence of a redistribution of the electronic charges around the neptunium nucleus.|
|JRC Institute:||Institute for Transuranium Elements|
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