Thermodynamics properties of NiCuP4O12

✍ Scribed by M. Belaïche; M. Bakhache; M. Benhammou; K. El-Mabrouke; M. Bousmina

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 173 KB
• Volume: 40
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/j.physe.2007.08.151

✦ Synopsis

The variation of magnetic susceptibility and heat capacity with temperature for the bimetallic nickel Ni(II)-copper Cu(II) cyclotetrametaphosphates (CuNiP 4 O 12 ) has been examined. The complex has a structure of quasi-one-dimensional alternate spins chains of Ni(II) and Cu(II) that exhibits a three-dimensional magnetic ordering at approximately 13.5 K. The compound is characterized by a ferromagnetic intrachain constant J F ¼ 4.05 K, with a significant effect of single ion anisotropy D ¼ 9.70 K. The chains are weakly coupled antiferromagnetically with an interchain exchange constant of 2z AF J AF ¼ À1.125 K.