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Magnetic transitions in Nd2NiO4
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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.
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OBRADORS, Xavier, et al. Magnetic transitions in Nd2NiO4. Physical Review B. 1991. Vol. 43, num. 13, pags. 10451-10454. ISSN 0163-1829. [consulted: 15 of August of 2026]. Available at: https://hdl.handle.net/2445/9947