Topic
Metamagnetism
About: Metamagnetism is a research topic. Over the lifetime, 2023 publications have been published within this topic receiving 38108 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, an external magnetic field induces a metamagnetic transition from an antiferromagnetic (AF) phase to a ferrimagnetic (FI) phase above Ts = 285 K, stabilizing the latter phase with the larger unit cell volume.
Abstract: For the Fe0.8Mn1.5As compound, an external magnetic field induces a metamagnetic transition from an antiferromagnetic (AF) phase to a ferrimagnetic (FI) phase above Ts = 285 K, stabilizing the latter phase with the larger unit-cell volume. On cooling, the resistivity curve ρ(T) of Fe0.8Mn1.5As shows an upturn near the temperature-induced AF–FI transition temperature Ts. With an increase in the number of warming and cooling cycles, the resistivity ρ(T) shifts to higher resistivity values, and this anomalous shift is ascribed to a pronounced reduction of the mean-free path of electron scattering. At/near room temperature, the resistivity first decreases with increasing external magnetic field until a critical field, and then after a field-independent stage it increases abruptly with a further increase in the field. In the subsequent field-decreasing process, the resistivity increases almost linearly, resulting in a large hysteresis in resistivity of 56.4 µΩ cm at 290 K (or 20.2 µΩ cm at 295 K) at zero field.
29 Nov 2022
TL;DR: In this article , the anisotropic magnetic properties of 2D van der Waals (vdW) insulator, chromium oxychloride (CrOCl), are presented, and the results evoke further experiments on charge/spin transport properties of few-layer CrOCl in the nanoelectronic circuit framework for understanding the connection between crystallographic deformation and metamagnetism.
Abstract: Herein, the anisotropic magnetic properties of 2D van der Waals (vdW) insulator, chromium oxychloride (CrOCl), are presented. Temperature‐dependent bulk magnetization reveals a paramagnetic to antiferromagnetic phase transition at ≈14 K (Néel temperature, TN) while cooling. From the magnetic field‐dependent magnetization study (M–H) at low temperature, a first‐order field‐induced (at or above 40 kOe) metamagnetic transition from antiferromagnetic to ferrimagnetic state has been observed. Noticeably, switching of the easy plane (ab‐plane) of the magnetization to the c‐axis can be identified above 29 kOe. Moreover, in the vicinity of TN, under an applied magnetic field, magnetic entropy change (ΔSM) can be estimated as 4.31 J kg−1 K−1 for H//c. The results evoke further experiments on charge/spin transport properties of few‐layer CrOCl in the nanoelectronic circuit framework for understanding the connection between crystallographic deformation and metamagnetism.
TL;DR: In this article, the magnetoresistance and de-Haas-van-Alphen effect (dHvA) were investigated for magnetic fields up to 45 T and in the temperature range 0.03 − 1 K.
Abstract: We investigated the magnetoresistance and de-Haas-van-Alphen effect (dHvA) in CeIrIn 5 for magnetic fields up to 45 T and in the temperature range 0.03–1 K. A concomitant drop in the resistivity and in the amplitude of the dHvA oscillations mark the onset of the metamagnetic transition at 28 T for field parallel to [0 0 1]. Both features are gradually suppressed when the field is rotated away from [0 0 1]. There is no significant change in the dHvA frequencies and the cyclotron effective masses, at odds with other known metamagnetic systems.
TL;DR: In this paper, X-ray scattering studies of the c-axis lattice parameter in Ca3Ru2O7 as a function of temperature and magnetic field, for B || the ground state easy (b) axis.
Abstract: We report X-ray scattering studies of the c-axis lattice parameter in Ca3Ru2O7 as a function of temperature and magnetic field, for B || the ground state easy (b) axis. The step-like, ∼0.1% change coincides in zero field with a spin reorientation and a metal–insulator transition, at Tm−i≈48 K, and shifts to a lower temperature upon application of magnetic field. At temperatures well below Tm−i, negligible change in the c-axis lattice parameter is observed at the metamagnetic transition to the spin-polarized phase, at Bc≈6 T, which indicates that this transition does not couple to the lattice degree of freedom.
TL;DR: Several new examples of organic one-electron acceptors have been discovered to be viable and versatile alternatives to tetracyanoethylene as building blocks for the synthesis of charge-transfer salt/charge-transfer polymer molecule-based magnets as discussed by the authors.
Abstract: Several new examples of organic one-electron acceptors have been discovered to be viable and versatile alternatives to tetracyanoethylene as building blocks for the synthesis of charge-transfer salt/charge-transfer polymer molecule-based magnets. Guidelines for the identification of new acceptor candidates as well as several examples of compounds derived from these acceptors will be described. The observed magnetic properties include glassy ferromagnetism, metamagnetism and ferrimagnetism.