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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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10 citations
TL;DR: In this paper, measurements of magnetization and neutron diffraction have been performed on TbNiSn single crystals with an orthorhombic (Pnma) TiNiSi-type structure.
Abstract: Measurements of magnetization and neutron diffraction have been performed on TbNiSn single crystals with an orthorhombic (Pnma) TiNiSi-type structure. Magnetic measurements indicate that this compound exhibits the four successive magnetic phase transitions at T1 = 2.0 K, T2 = 6.0 K, T3 = 7.6 K and TN = 18.5 K. There is little difference in neutron diffraction patterns between above and below T1. The magnetic structure is of a square-wave with Q = (0.600, 0.345, 0) for T 2 , Q = (0.665, 0.33, 0) for T 2 3 and of a sine-modulated type with Q = (0.685, 0.33, 0) for T3
10 citations
TL;DR: An H-T phase diagram is constructed for x=0.225 and a reasonable correlation is established between MCE and MR and a universal master curve is constructed by rescaling the magnetic entropy curves.
Abstract: Evolution of physical and magnetic properties of La rich La1-x Tb x Mn2Si2 (x = 0, 0.1 and 0.225) compounds is studied using temperature and field dependent dc magnetization, electrical transport, and heat capacity measurements. LaMn2Si2 undergoes a paramagnetic to antiferromagnetic ordering at T N ~ 400 K and a long range ferromagnetic ordering below T C ~ 308 K. However, the substitution of Tb at La site results in the contraction of unit cell as well as decrease in the Mn-Mn spacing, which leads to an additional antiferromagnetic phase below T N ~ 87 K and 257 K for La0.9Tb0.1Mn2Si2 and La0.775Tb0.225Mn2Si2, respectively. Using magnetization isotherm results, we have constructed an H-T phase diagram for x = 0.225 and have found the coexistence of this additional antiferromagnetic phase with ferromagnetic phase. The phase coexistence at x ~ 0.225 is further analysed using magnetoresistance (MR) and magnetocaloric effect (MCE) studies and a reasonable correlation is established between MCE and MR. In order to analyse the nature of the magnetic transition at T C, a universal master curve is constructed by rescaling the magnetic entropy curves. Low temperature neutron diffraction measurements performed on the polycrystalline samples revealed a canted ferromagnetic structure for x ~ 0.1 and a canted antiferromagnetic structure for x ~ 0.225.
10 citations
TL;DR: In this article, the maximum value of hysteresis loss EhMAX due to the itinerant-electron metamagnetic (IEM) transition of La(FexSi1−x)13 and the partially substituted compounds La1−zCez(Fe0.86Si0.14)13 was investigated.
10 citations
TL;DR: In this paper, the authors established a phase diagram in the magnetic field-temperature plane and point out similarities to metamagnetic transitions observed in other magnetic systems, such as magnetoresistance.
10 citations