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|Title:||Magnetic Anisotropy in NpRhGa5 Single Crystals|
|Authors:||COLINEAU ERIC; WASTIN FRANCK; REBIZANT JEAN|
|Citation:||JOURNAL OF PHYSICS-CONDENSED MATTER vol. 18 p. 411-419|
|Publisher:||IOP PUBLISHING LTD|
|Type:||Articles in Journals|
|Abstract:||We have investigated oriented single crystals of the antiferromagnet NpRhGa5 (TN37 K) by means of magnetization and specific heat measurements. Strong anisotropy effects are observed: when magnetic fields are applied in the basal plane, the Néel temperature is barely affected. In contrast, in fields applied along the c axis, the second-order transition (magnetic ordering) is shifted to lower temperatures and merges into the first-order transition (reorientation of the magnetic moments). A full mapping of this complex magnetic phase diagram as a function of the temperature (down to 1.6 K), applied magnetic field (up to 9 T) and crystal orientation is presented. This study shows that antiferromagnetic order is more fragile when the magnetic field is applied along the c axis, which is similar to the situation observed for the NpCoGa5 homologue compound.|
|JRC Institute:||Institute for Transuranium Elements|
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