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 magnetic properties of cubic intermetallic compound NdCu 4 Ag single crystals were studied in detail through magnetization, susceptibility, specific heat and electrical resistivity measurements.
Abstract: The magnetic properties of cubic intermetallic compound NdCu 4 Ag single crystals were studied in detail through magnetization, susceptibility, specific heat and electrical resistivity measurements. An observed anomaly in C ( T ) with a sharp peak 26 J/(mol K) at 4.2 K, together with an antiferromagnetic behavior of χ( T ), indicated that an antiferromagnetic phase transition occurred at this temperature. Anisotropic properties in M ( H ), χ( T ), and C ( T ) at external fields were investigated in directions of [001], [110], and [111], respectively. Two metamagnetic transitions were observed below the Neel temperature T N when a magnetic field was applied in three directions. In all the three directions, T N decreased with an increase in magnetic field and new anomalies induced by a high H ext were observed in both χ( T ) and C ( T ), implying that two new magnetic phases coexisted with the antiferromagnetic phase. From the specific heat measurements, it is speculated that the crystalline electric field ...
3 citations
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TL;DR: BaVS3 has the CsCoCl3-type structure, in which V atoms form linear chains along the c-axis and a triangular lattice in the c plane, and it exhibits a metal-insulator transition at T MI =70 K and an incommensurate antiferromagnetic structure below T X =30 K.
Abstract: BaVS3 has the CsCoCl3-type structure, in which V atoms form linear chains along the c-axis and a triangular lattice in the c plane. This compound exhibits a metal–insulator transition at T MI =70 K and an incommensurate antiferromagnetic structure below T X =30 K . We performed high-field magnetization measurements up to 95 T using a destructive single-turn coil and found a tiny magnetization jump at around 50 T. The origin of this jump is discussed on the basis of proposed models for BaVS3.
3 citations
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TL;DR: In this article, a strong magnetic anisotropy between the [100] and [110] directions is observed within the basal plane for high magnetic fields along the hard magnetization direction of the c-axis, a metamagnetic transition appears.
Abstract: Magnetic studies were performed on PrPd2Si2 single crystals which crystallize in the tetragonal ThCr2Si2-type structure. The temperature dependence of the magnetic susceptibility indicates that the compound orders antiferromagnetically at temperatures below T
N
= 3.2 K. The transition was confirmed by specific heat measurements. Magnetization measurements at fields up to 18 T show that the easy magnetization direction is the [100] direction in the basal plane. In the magnetization process, five or four metamagnetic transitions appear; the process is a five (four)-step metamagnetic one. The [110] magnetization process is a three-step one. A strong magnetic anisotropy between the [100] and [110] directions is observed within the basal plane for high magnetic fields. Along the hard magnetization direction of the c-axis, a metamagnetic transition appears. The B
[100] − T phase diagram was constructed. A magnetic anisotropy between the [100] and [001] directions is also strong. These behaviors are discussed based on an analysis of crystalline field effects.
3 citations
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TL;DR: In this paper, a finite itinerant-electron metamagnetic gas at sufficiently low absolute temperature is considered, and the electronic energy of the abovementioned gas is derived in relation to the Fermi levels of the spin-up and spin-down electron bands.
Abstract: Abstract In order to exemplify, we consider a finite itinerant-electron metamagnetic gas at sufficiently low absolute temperature so that relevant new results are obtained. In fact, we study key aspects related to derive the electronic energy of the abovementioned metamagnetic gas in relation to the Fermi levels of the spin-up and spin-down electron bands and in relation to the exchange energy and magnetic susceptibility. Within an unprecedented mathematical–physics approach, the abovementioned electronic energy is reinterpreted by defining it as an averaged quantity from the corresponding nonrelativistic, time-independent, Schrödinger equation with two-band energy-eigenvalue spectrum. In parallel, a matrix formulation is presented.
3 citations
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TL;DR: In this article, it was shown that the variation of susceptibility follows precisely a T 2 ln T law and two scaling laws in accordance with theoretical predictions, and that the near-metamagnetic behavior can be attributed to a steep peak in the ∂M/∂H versus M curves arising also from a logarithmic term.
3 citations