UNi4B: ordered and disordered uranium moments

✍ Scribed by S.A.M Mentink; T.E Mason; A Drost; E Frikkee; B Becker; A.A Menovsky; J.A Mydosh

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 248 KB
• Volume: 223-224
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/0921-4526(96)00088-9

✦ Synopsis

We demonstrate that the unusual magnetic properties of the hexagonal uranium compound UNi4B can be understood by the formation of a partially antiferromagnetic ordered state below TN = 20 K. Two dissimilar uranium moments exist due to the existence of a crystallographic superlattice. New low-temperature, high-field AC susceptibility and resistivity data down to 30 mK and 16 T suggest that the nonordering moments are gradually compensated as the temperature is lowered from TN to zero. These moments do not undergo another phase transition.