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 have carried out measurements of magnetization in geometrically frustrated system TbPd 1 - x Ni x Al, and discussed the x-dependence of magnetic parameters H c, T N 1 and θ p in terms of a simple molecular field model.
Abstract: We have carried out measurements of magnetization in geometrically frustrated system TbPd 1 - x Ni x Al . A small magnetic field H c below 1.1 T at 5 K along the magnetically easy c-axis collapses the antiferromagnetic (AF) structure and induces a ferromagnetic (F) structure. The x -dependence of H c shows a maximum at x c ≈ 0.4 , while the Neel temperature T N 1 and the paramagnetic Curie temperature θ p show minima at x c . We discuss the x-dependence of magnetic parameters H c , T N 1 and θ p in terms of a simple molecular field model.
5 citations
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TL;DR: In this paper, complex metamagnetic transitions in single crystals of the new low carrier Kondo antiferromagnet YbRh3Si7 are reported, and the origin of the anomalous metamagnetism is related to competition between crystal electric field anisotropy and anisotropic exchange interactions.
Abstract: We report complex metamagnetic transitions in single crystals of the new low carrier Kondo antiferromagnet YbRh3Si7. Electrical transport, magnetization, and specific heat measurements reveal antiferromagnetic order at T_N = 7.5 K. Neutron diffraction measurements show that the magnetic ground state of YbRh3Si7 is a collinear antiferromagnet where the moments are aligned in the ab plane. With such an ordered state, no metamagnetic transitions are expected when a magnetic field is applied along the c axis. It is therefore surprising that high field magnetization, torque, and resistivity measurements with H||c reveal two metamagnetic transitions at mu_0H_1 = 6.7 T and mu_0H_2 = 21 T. When the field is tilted away from the c axis, towards the ab plane, both metamagnetic transitions are shifted to higher fields. The first metamagnetic transition leads to an abrupt increase in the electrical resistivity, while the second transition is accompanied by a dramatic reduction in the electrical resistivity. Thus, the magnetic and electronic degrees of freedom in YbRh3Si7 are strongly coupled. We discuss the origin of the anomalous metamagnetism and conclude that it is related to competition between crystal electric field anisotropy and anisotropic exchange interactions.
5 citations
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TL;DR: In this article, the conditions of appearance and stability of magnetic phases in nonstoichiometric iron phosphide under a pressure of 12 kbar were studied experimentally and the results of the measurements of initial susceptibility and magnetization processes as a function of temperature in fields up to 100 kOe were used as a basis for construction of the generalized P-T -ϵ phase diagram.
5 citations
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TL;DR: In this paper, the spin fluctuation model for the itinerant-electron metamagnetism was used to estimate the free energy up to the tenth power of the magnetization.
Abstract: Metamagnetic transition and susceptibility maximum phenomena observed for UCoAl are discussed by the spin fluctuation model for the itinerant-electron metamagnetism. The expansion coefficients of the free energy up to the tenth power of the magnetization are determined so as to fit to the observed magnetization curve at 1.8 K. By making use of these coefficients the susceptibility maximum and the metamagnetic transition at finite temperature are estimated and compared with experiment.
5 citations
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TL;DR: In this paper, the crystal structure of the newly discovered compound Ce3MnBi5 was determined from X-ray single crystal diffraction data, and the space group is P63/mcm with the lattice parameters a=9.627(3), c=6.456(1) A. The compound crystallizes in the Ga4Ti5 structure type.
5 citations