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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: The non-magnetic heavy fermion behavior of CeRu Ge is destroyed by hydrogen insertion, and the resulting hydride CeRuGeH, investigated by magnetization, thermoelectric, electrical resistivity and specific heat measurements, exhibits an antiferromagnetic ordering below T(N), weakly influenced by the Kondo effect.
Abstract: The non-magnetic heavy fermion behavior of CeRuGe is destroyed by hydrogen insertion. The resulting hydride CeRuGeH, investigated by magnetization, thermoelectric, electrical resistivity and specific heat measurements, exhibits an antiferromagnetic ordering below TN = 4.0(2)?K weakly influenced by the?Kondo effect. Below TN, a metamagnetic double transition induced by an applied magnetic field was evidenced for CeRuGeH. This hydride presents a simple field?temperature phase diagram in comparison to that determined for the equivalent compound CeRuSiH.
6 citations
TL;DR: In this article, low-temperature measurements of magnetization, magnetoresistivity, Hall resistivity, magnetostriction, and elastic moduli on a UNiAl single crystal in magnetic fields up to 14 T applied along the c axis of the hexagonal structure.
Abstract: We report on low-temperature measurements of magnetization, magnetoresistivity, Hall resistivity, magnetostriction, and elastic moduli on a UNiAl single crystal in magnetic fields up to 14 T applied along the c axis of the hexagonal structure. UNiAl is an itinerant 5f-electron antiferromagnet below TN=19.3 K. At temperatures below 7 K (∼0.3 TN), it exhibits a first-order metamagnetic transition (MT) at a critical field μ0Hc≈11.35 T between the low-field antiferromagnetic state and the high-field ferromagnetic one. The transition is accompanied by a sharp anomaly in transport and lattice properties. A striking observation is that the “virgin” curves expressing the field dependence of the various electronic properties clearly differ from those observed on a sample that has once appeared in the high-field state. This irreversibility in bulk properties corresponds to an irreversible change of the magnetic-structure propagation vector within the basal plane observed by neutron diffraction. The different shapes...
6 citations
TL;DR: In this article, specific heat data in high magnetic fields on URu2Si2 and 4% Rh-doped URuSi2 as well as previously published de Haas-van Alphen data at lower magnetic fields in pure URu 2Si2 were discussed.
Abstract: We discuss recent specific heat data in high magnetic fields on URu2Si2 and 4% Rh-doped URu2Si2 as well as previously published de Haas-van Alphen data at lower magnetic fields in pure URu2Si2; both of which are consistent with quasiparticle bands formed from a hybridization between 5f-electron Γ 5 doublets and regular conduction electrons. The system exhibits itinerant electron metamagnetism that gives rise to a putative quantum critical point at ∼34 −37 T (depending on the % of Rh) that is subsequently unstable to field-induced phases.
6 citations
TL;DR: In this paper, single crystals of the HoMn 2 compound were grown by the Czochralski method from a levitated melt and the thermal dependence of the electrical resistivity exhibits a magnetic transition at 29 K. A second transition occurs at 21 K.
6 citations
TL;DR: In this article, the disappearance of metamagnetism at x ≈ 0.2 coincides with the destruction of coherent scattering in the diluted Kondo system Ce1−x(La0.63Y0.37)xRu2Si2, (0 ⩽ x ⌽ 1), and a continuous increase of χ(T) on cooling down to 2 K is observed.
Abstract: Magnetic susceptibility χ(T), magnetization (M(B) and electrical resistivity ϱ(T) of the diluted Kondo system Ce1−x(La0.63Y0.37)xRu2Si2, (0 ⩽ x ⩽ 1), have been studied in detail. The disappearance of metamagnetism at x ≈ 0.2 coincides with the destruction of coherent scattering in ϱ(T). In the dilute limit, a continuous increase of χ(T) on cooling down to 2 K is observed. Such a variation can be calculated assuming a distribution of the Kondo temperatures, which could result from local density fluctuations.
6 citations