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: In this article, the critical temperature for the magnetic phase transition of FeRh can be changed between 405 and 360 K in different rates for FeRh films grown on different substrates.
Abstract: We grew 80 nm FeRh films on different single crystals with various lattice constants. FeRh films on SrTiO3 (STO) and MgO substrates exhibit an epitaxial growth of 45° in-plane structure rotation. In contrast, FeRh on LaAlO3 (LAO) displays a mixed epitaxial growth of both 45° in-plane structure rotation and cube-on-cube relationships. Due to the different epitaxial growth strains and lattice mismatch values, the critical temperature for the magnetic phase transition of FeRh can be changed between 405 and 360 K. In addition, the external magnetic field can shift this critical temperature to low temperature in different rates for FeRh films grown on different substrates. The magnetoresistance appears a maximum value at different temperatures between 320 and 380 K for FeRh films grown on different substrates.
31 citations
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TL;DR: The magnetization process of the Kondo insulator YbB12 has been revealed in ultrahigh magnetic fields of up to 120 T at 4.2 K in this article.
Abstract: The magnetization process of the Kondo insulator YbB12 has been unveiled in ultrahigh magnetic fields of up to 120 T at 4.2 K. We have found a novel metamagnetic transition at Bc2 = 102 T in addition to the previously known transition at Bc1 = 55 T. It has also been observed that the magnetization tends to saturate at around 112 T. Within the rigid band model, the two-energy-gap structure in the density of states (DOS) explains the successive two-step metamagnetism as a result of the Zeeman effect of the DOS. The metamagnetic transition at Bc1 occurs along with an insulator–metal transition and the field-induced phase is expected to be a heavy fermion metallic state. The Kondo effect can weaken at the second transition of Bc2, as theoretically found in the successive two-metamagnetic-transition process in the Kondo semimetal CeNiSn.
31 citations
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TL;DR: In this article, the evolution of the magnetic properties as a function of the yttrium concentration is discussed in the light of the band structure of different compounds, and four different behaviours, characteristic of the occurrence of d ferromagnetism in intermetallics have been observed: Exchange Enhanced Pauli Paramagnetisms in YNi5 and YNi2, very weak Itinerant Ferromagnetic Magnetism in Y Ni3, Collective Electron Metamagnetic MetamagnetISM in Y2Ni17 and Thermal Spontaneous Magnetization in Y 2Ni
Abstract: Among the Y‐Ni compounds, four different behaviours, characteristic of the occurrence of d ferromagnetism in intermetallics have been observed : Exchange Enhanced Pauli Paramagnetism in YNi5 and YNi2, Very Weak Itinerant Ferromagnetism in YNi3, Collective Electron Metamagnetism in Y2Ni17 and Thermal Spontaneous Magnetization in Y2Ni7. The evolution of the magnetic properties as a function of the yttrium concentration is discussed in the light of the band structure of the different compounds.
31 citations
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TL;DR: In this paper, the effect of spin fluctuations on the metamagnetic transition in an itinerant-electron system is discussed at finite temperature, and the critical pressure of the MT is shown to decrease with increasing temperature.
31 citations
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TL;DR: High magnetic field measurements of magnetic torque, thermoelectric power, magnetization, and the de Haas-van Alphen effect in CeIrIn_{5} across 28 T, where a metamagnetic transition was suggested in previous studies are reported.
Abstract: We report high magnetic field measurements of magnetic torque, thermoelectric power, magnetization, and the de Haas-van Alphen effect in CeIrIn_{5} across 28 T, where a metamagnetic transition was suggested in previous studies. The thermoelectric power displays two maxima at 28 and 32 T. Above 28 T, a new, low de Haas-van Alphen frequency with a strongly enhanced effective mass emerges, while the highest frequency observed at low field disappears entirely. This suggests a field-induced Lifshitz transition. However, longitudinal magnetization does not show any anomaly up to 33 T, thus ruling out a metamagnetic transition at 28 T.
31 citations