Topic
Metamagnetism
About: Metamagnetism is a research topic. Over the lifetime, 2023 publications have been published within this topic receiving 38108 citations.
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TL;DR: In this paper, the authors review several possibilities other than the well-known ferrimagnetism that permit spontaneous magnetization in antiferromagnets, including non-collinear antiparallel alignment of the magnetic moments, or the flipping of spins to parallel alignment by the action of a small magnetic field.
Abstract: Spontaneous magnetization is a most important property in magnetism because of both practical and fundamental reasons. However, nature tends to favour antiferromagnetic alignment better than ferromagnetic one. This is particularly so in the case of molecular systems. This paper emphasizes the point that such tendency does not necessarily excludes the possibility of the presence of spontaneous magnetization in systems where antiferromagnetic interactions dominate and reviews several possibilities other than the well-known ferrimagnetism that permit inducing spontaneous magnetization in antiferromagnets. Examples include favouring non collinear antiparallel alignment of the magnetic moments, or the flipping of spins to parallel alignment by the action of a small magnetic field. The introduction of a certain degree of magnetic disorder in antiferromagnetic lattices can also produce a remnant magnetization in the material. Necessary conditions required for each strategy and some selected examples are...
8 citations
TL;DR: Mineev et al. as discussed by the authors showed that the amplitude of this weak antiferromagnetic ordering increases below the phase transition into superconducting state due to Cooper pairs spontaneous magnetism.
8 citations
TL;DR: In this paper, two-sublattice collinear Heisenberg-Ising (S = 1) metamagnets with uniaxial three-ion anisotropy are investigated.
Abstract: Two-sublattice collinear Heisenberg-Ising (S = 1) metamagnets with uniaxial three-ion anisotropy are investigated. Thermodynamical properties of this model are examined in the approximation including Gaussian fluctuations of the molecular field. The complete phase diagrams are obtained numerically. The theoretical results fitted for the FeCl2 metamagnet are compared with experimental ones.
8 citations
TL;DR: In this article, the properties of metamagnetic Mn1−xCrxAu2 were studied and a significant magnetoresistance as large as 3.5% was observed at room temperature in magnetic fields below 10 kOe.
8 citations
TL;DR: In this article, the effect of hydrostatic pressure on the magnetic properties has been investigated for itinerant-electron metamagnetic Hf 1− x Ta x Fe 2 ( x = 0.125 and 0.14) compounds which exhibit a temperature-induced transition from the ferromagnetic (FM) to the antiferromagnetic state upon heating.
8 citations