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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: In this paper, the microstructure of LaFe11.6Si1.4 compound under itinerant-electron metamagnetic transition was investigated by means of optical microscopy.
Abstract: The microstructure of LaFe11.6Si1.4 compound under itinerant-electron metamagnetic transition was investigated by means of optical microscopy. It was found that the field-induced phase transition observed in LaFe11.6Si1.4 compound preceded via nucleation and growth of the ferromagnetic phase.
01 Sep 2022
TL;DR: In this paper , the authors performed ultrasonic and temperature measurements under pulsed magnetic fields on CeIrIn$_5$ to investigate whether or not the origin of metamagnetic transition and field-induced Lifshitz transition was described by the anisotropic electronic ordering with crystal symmetry breaking.
Abstract: We performed ultrasonic and temperature measurements under pulsed magnetic fields on CeIrIn$_5$ to investigate whether or not the origin of metamagnetic transition and field-induced Lifshitz transition was described by the anisotropic electronic ordering with crystal symmetry breaking. We observed elastic anomalies with the negative magnetocaloric effects around the field-induced Lifshitz transition and the metamagnetic transition. On the other hand, the elastic anomalies appeared both in the transverse elastic constants $(C_{11} - C_{12})/2$ and $C_{66}$ in CeIrIn$_5$ while $(C_{11} - C_{12})/2$ showed significant elastic anomaly at the crystal symmetry breaking fields in CeRhIn$_5$. These results indicate that the anisotropic electronic ordering with crystal symmetry breaking is absent in high-magnetic fields in CeIrIn$_{5}$.
26 Jun 2023
TL;DR: In this article , the magnetic and electrical properties of a (Mn$_3$Sn)$_2$ triangular network kagome structured high quality Ho substituted single-crystal sample by magneto-transport measurements are reported.
Abstract: We report on the magnetic and electrical properties of a (Mn$_3$Sn)$_2$ triangular network kagome structured high quality Ho substituted ErMn$_6$Sn$_6$ single-crystal sample by magneto-transport measurements. Er$_{0.5}$Ho$_{0.5}$Mn$_6$Sn$_6$ orders antiferromagnetically at N\'{e}el temperature $T_\mathrm{N} \sim$ 350 K followed by a ferrimagnetic (FiM) transition at $T_\mathrm{C} \sim$ 114 K and spin-orientation transition at $T_\mathrm{t} \sim$ 20 K. The field-manifestations of these magnetic phases in the \textit{ab}-basal plane and along the \textit{c}-axis are illustrated through temperature-field \textit{T-H} phase diagrams. In \textit{H}$\parallel$\textit{c}, narrow hysteresis between spin reorientation and field-induced FiM phases below $T_\mathrm{t}$, enhanced/strengthened FiM phase below $T_\mathrm{C}$ and stemming of FiM phase out of strongly coexisting AFM and FiM phases below $T_\mathrm{N}$ through a non-meta-magnetic transition are confirmed to arise from strong R-Mn sublattices interaction. In contrast, \textit{H}$\parallel$\textit{ab}-plane, between $T_\mathrm{N}$ and $T_\mathrm{C}$, individually contributing R-Mn sublattices with weak antiferromagnetic interactions undergo a field-induced spin-flop quasi-metamagnetic transition to FiM state. The temperature dependent electrical resistivity suggests metallic nature with Fermi liquid behavior at low temperatures. Essentially, the current study stimulates interest to investigate the magnetic and electrical properties of mixed rare-earth layered kagome magnetic metals for possible novel and exotic behavior.
TL;DR: In this paper, the authors reported measurements of magnetization, magnetic susceptibility, specific heat, and neutron diffraction on a single crystal of the heavy fermion compound, Ce 4 Ni 3 Pb 4, crystallizing in a trigonal structure with two inequivalent Ce sites.
Abstract: We report measurements of magnetization, magnetic susceptibility, specific heat, and neutron diffraction on a single crystal of the heavy fermion compound, Ce 4 Ni 3 Pb 4 , crystallizing in a trigonal structure with two inequivalent Ce sites. In the paramagnetic state, the effect of crystal electric field (CEF) leads to the easy magnetization direction along the c -axis. Magnetic Bragg peaks develop below T N =3.0 K and are indexed with a propagation vector k =[0,1,1/2]. Below T N , a spontaneous moment of 10 -3 µ B /Ce is observed only for B ⊥ c , while a metamagnetic transition is observed for B ∥ c at 1.3 T. The small spontaneous moment in the c -plane is ascribed to the slight canting of the antiferromagnetically aligned moments from the c -axis. The inelastic neutron scattering spectrum is composed of four CEF excitations at 5.3, 19, 24, and 40 meV. The peaks at 19 and 40 meV have a rather large width of 10 meV, which is three times larger than that of the others. The wide peaks are assigned to excit...
TL;DR: In this paper, the authors studied the magnetic properties of the 5 f-band system UCoAl and found that the magnetic fields as low as 0.67 T oriented along the c-axis induce the metamagnetic transition below 17 K.
Abstract: The 5 f -band system UCoAl, which crystallizes in the hexagonal ZrNiAl-type structure, has the enhanced paramagnetic ground state. The magnetic fields as low as 0.67 T oriented along the c -axis induce the metamagnetic transition below 17 K. Substitution effect for Co was studied by using Ni and Fe; the substitution of Ni stabilizes the paramagnetic state, and that of Fe stabilizes the ferromagnetic state. In order to study the origin of the magnetic-property change of UCo 1- x T x Al ( T = Ni, Fe), we performed 27 Al and 57 Co NMR/NQR measurements in UCo 0.95 Ni 0.05 Al and UCo 0.98 Fe 0.02 Al single crystals. The Knight shift and the nuclear spin-lattice relaxation rate T 1 -1 show the existence of the anisotropic spin fluctuations which are related with the potential ferromagnetic fluctuations among 5 f electrons in these materials.