Título:
|
Magnetic transitions in Nd2NiO4
|
Autor/a:
|
Obradors, Xavier; Batlle Gelabert, Xavier; Rodríguez Carvajal, Juan; Martínez, J. L.; Vallet Regí, María; González Calbet, José María; Alonso, J. A. (Julio A.), 1948-
|
Otros autores:
|
Universitat de Barcelona |
Abstract:
|
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. |
Materia(s):
|
-Física de l'estat sòlid -Magnetisme -Solid state physics -Magnetism |
Derechos:
|
(c) The American Physical Society, 1991
|
Tipo de documento:
|
Artículo Artículo - Versión publicada |
Editor:
|
The American Physical Society
|
Compartir:
|
|