Magnetic transitions in Nd2NiO4
Five different magnetic phase transitions have been identified and characterized in stoichiometric Nd 2 NiO 4 by means of magnetic-susceptibility and isothermal-magnetization measurements. A collinear antiferromagnetic ordering of Ni 2 + magnetic moments exists between T N 1 ≊320 K and T c 1 ≊130 K...
| Authors: | , , , , , , |
|---|---|
| Format: | article |
| Status: | Published version |
| Publication Date: | 1991 |
| Country: | España |
| Institution: | Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya) |
| Repository: | Recercat. Dipósit de la Recerca de Catalunya |
| OAI Identifier: | oai:recercat.cat:2445/9947 |
| Online Access: | https://hdl.handle.net/2445/9947 |
| Access Level: | Open access |
| Keyword: | Física de l'estat sòlid Magnetisme Solid state physics Magnetism |
| Summary: | Five different magnetic phase transitions have been identified and characterized in stoichiometric Nd 2 NiO 4 by means of magnetic-susceptibility and isothermal-magnetization measurements. A collinear antiferromagnetic ordering of Ni 2 + magnetic moments exists between T N 1 ≊320 K and T c 1 ≊130 K where an orthorhombic-to-tetragonal structural phase transition occurs. In this temperature range, Nd 3 + ions follow a simple paramagnetic Curie-Weiss-like behavior, while a weak ferromagnetic component appears below 130 K. An internal magnetic field on the Nd 3 + ions develops with this structural phase transition. Two additional transitions are observed at T c 2 ≊68 K and T c 3 ≊45 K which are characterized by a sudden increase of the weak ferromagnetic component. Finally, a peak of the differential susceptibility at T N 2 ≊11 K marks a long-range antiferromagnetic ordering of the Nd 3 + ions. The internal magnetic field acting on the Nd ions was evaluated to be 5.2 T in the 20 K– T c 2 temperature range. |
|---|