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: A survey of metamagnetic processes discovered during recent decades in rare earth intermetallics, where only the rare earth is magnetic, is presented together with macroscopic and microscopic aspects of the complex associated H-T magnetic phase diagrams as discussed by the authors.
30 citations
TL;DR: Self-assembly of copper(l) ions, phenylmalonate and pyrimidine yields the layered compound [Cu(pym)(Phmal)n (1) where intralayer ferro- and interlayer antiferromagnetic interactions occur with three-dimensional antiferromeagnetic ordering at T(c) = 2.15 K.
30 citations
TL;DR: In this article, the authors developed a Ni48.1Co2.0 metamagnetic shape memory microwire with a large and reversible inverse magnetocaloric effect, which showed a better combination of magnetostructural transformation parameters and thus greatly reduced critical field required for complete and reversible magnetic-field-induced transformation.
Abstract: High-performance magnetocaloric materials should have a large reversible magnetocaloric effect and good heat exchange capability. Here, we developed a Ni48.1Co2.9Mn35.0In14.0 metamagnetic shape memory microwire with a large and reversible inverse magnetocaloric effect. As compared to the bulk counterpart, the microwire shows a better combination of magnetostructural transformation parameters (magnetization difference across transformation ΔM, transformation entropy change ΔStr, thermal hysteresis ΔThys, and transformation interval ΔTint) and thus greatly reduced critical field required for complete and reversible magnetic-field-induced transformation. A strong and reversible metamagnetic transition occurred in the microwire, which facilitates the achievement of large reversible magnetoresponsive effects. Consequently, a large and reversible magnetic-field-induced entropy change ΔSm of 12.8 J kg−1 K−1 under 5 T was achieved in the microwire, which is the highest value reported heretofore in Ni-Mn-based mag...
30 citations
TL;DR: The magnetization of single crystalline TbB 4 has been investigated in the antiferromagnetically ordered state up to 54 T at 42 K, for B ∥ [ 0 0 1 ], the magnetization shows field-induced multi-step jumps and several plateau regions above 16 T, and finally reaches saturation at about 28 T as discussed by the authors.
29 citations
TL;DR: In this paper, the authors report neutron diffraction, transport, and magnetization measurements of thin films of doped EuTiO3, an itinerant magnetic material, as a function of carrier density and magnetic field.
Abstract: In materials with broken time-reversal symmetry, the Berry curvature acts as a reciprocal space magnetic field on the conduction electrons and is a significant contribution to the magnetotransport properties, including the intrinsic anomalous Hall effect. Here, we report neutron diffraction, transport, and magnetization measurements of thin films of doped EuTiO3, an itinerant magnetic material, as a function of carrier density and magnetic field. These films are itinerant antiferromagnets at all doping concentrations. At low carrier densities, the magnetoresistance indicates a metamagnetic transition, which is absent at high carrier densities (>6 × 1020 cm−3). Strikingly, the crossover coincides with a sign change in the spontaneous Hall effects, indicating a sign change in the Berry curvature. We discuss the results in the context of the band structure topology and its coupling to the magnetic texture.
29 citations