Influence of carbon intercalation on the structural and magnetic properties of Ni3Al

✍ Scribed by P. Tong; X.B. Zhu; B.C. Zhao; R. Ang; W.H. Song; Y.P. Sun

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 303 KB
• Volume: 371
• Category: Article
• ISSN: 0921-4526
• DOI: 10.1016/j.physb.2005.09.035

✦ Synopsis

The structural and magnetic properties of the series compounds with nominal composition AlC x Ni 3 (x ¼ 0, 0.025, 0.05, 0.075, 0.1, 0.2) have been investigated. All samples share the same space group Pm3 m, while the lattice parameter a is found to increase monotonously with x. Both the Curie temperature T C and the spontaneous magnetic moment per Ni atom at 5 K, m Ni , decrease with increasing x. As x40.05, the long-range ferromagnetic order disappears and the samples become exchange-enhanced Pauli paramagnets. It may be attributed to the reduction of the density of states (DOS) at the Fermi level, N(E F ), due to the increasing Ni 3d-C 2p hybridization.