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: Hall effect measurements were performed under pressure and magnetic field up to 2.2 GPa and 16 T on a single crystal of UCoAl and the Hall signal is linear at low field and shows a step-like anomaly at the transition, with only little change of the Hall coefficient.
Abstract: Hall effect measurements were performed under pressure and magnetic field up to 2.2 GPa and 16 T on a single crystal of UCoAl. At ambient pressure, the system undergoes a first order metamagnetic transition at the critical field \(B_{\text{m}}=0.7\) T from a paramagnetic ground state to a field-induced ferromagnetic state. The Hall signal is linear at low field and shows a step-like anomaly at the transition, with only little change of the Hall coefficient. The anomaly is sharpest at the temperature of the critical end point \(T_{0}=12\) K above which the first order metamagnetic transition becomes a crossover. Under pressure \(B_{\text{m}}\) increases and \(T_{0}\) decreases. The step-like anomaly in the Hall effect disappears at \(P_{\text{M}} \approx 1.3\) GPa and the metamagnetic transition is not detected above the quantum critical end point (QCEP) at \(P_{\Delta}\approx 1.7\) GPa, \(B_{\text{m}}\approx 7\) T. Using magnetization data, we analyse our Hall resistivity data at ambient pressure in order...
9 citations
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TL;DR: In this paper, a hexagonal GaGeLi-type crystal structure is used to construct a collinear antiferromagnets with the orthohexagonal magnetic unit cell.
9 citations
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TL;DR: In this paper, magnetic and heat capacity investigations, as well as density functional theory (DFT) calculations, were carried out on rare-earth anti-perovskites with oxygen and revealed an unusual exchange mechanism and band topology near the Fermi level.
9 citations
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TL;DR: In this article, the three-step metamagnetism in DyRu 2 Si 2 has been studied by neutron diffraction measurements on a single-crystal sample, and the magnetic structures are inferred to be two-dimensional and incommensurate.
Abstract: The three-step metamagnetism in DyRu 2 Si 2 has been studied by neutron diffraction measurements on a single-crystal sample. At 4.2 K the magnetization jumps at 10 kOe (= H c1 ), 15.5 kOe (= H c2 ) and 17.5 kOe (= H c3 ) and then reaches saturation. The compound has a one-dimensional incommensurate structure with a fundamental wave vector of Q 1 = (0.22,0,0) for H < H c1 . For H c1 ≤ H < H c2 and for H c2 ≤ H < H c3 , the magnetic structures are characterized by fundamental wave vectors of Q 1 , Q' 1 = (0,0.22,0), Q 2 = (0.22,0.22,0), Q' 2 = (0.22, - 0.22,0) and Q 0 = 0. The structures are inferred to be two-dimensional and incommensurate. Schematic representations of the magnetic structures are presented.
9 citations
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TL;DR: The pseudo-1D charge transfer salt decamethylferrocenium 2,3-dicyano-1,4-naphthoquinonide, FeCp*2[DCNQ] is an unusual metamagnet that exhibits hysteresis centered on zero applied field in the nominally antiferromagnetic ordered state due to the presence of canting.
9 citations