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 paper, the results of a study of resistivity and magnetoresistance of the polycrystalline Ce2Fe17 compound under pressure up to 10kbar at magnetic field up to 9 T were presented.
4 citations
TL;DR: In this article, two distinct metamagnetic transitions, which may relate to the collapse of the pseudo-CE-type and CE-type antiferromagnetic phases, have been observed in the temperature region of 2.5-140 K.
Abstract: Measurements of isothermal magnetization and electrical transport on Pr0.5Ca0.5Mn0.97Ga0.03O3 have been performed in a magnetic field up to 15 T. Two distinct metamagnetic transitions, which may relate to the collapse of the pseudo-CE-type and CE-type antiferromagnetic phases (CE, a composite antiferromagnetic structure composed of a chequeboard of alternating C and E type), have been observed in the temperature region of 2.5–140 K. Different from the traditional magnetization steps, the two metamagnetic transitions are not dependent on the field sweep rate. These peculiar features are sensitive to the microstructure of the sample. A temperature-field phase diagram has been constructed and found to exhibit a minimum critical field, similar to other phase-separated systems.
4 citations
TL;DR: The magnetization, magnetoresistance and elastic properties of Sm0.56Sr0.44MnO3 have been investigated in this paper, and it is shown that small additions of Ba, Cd and Ca ions lead to an inhomogenous magnetic state appearance and an irreversible metamagnetic behaviour below the Curie point.
Abstract: The magnetization, magnetoresistance and elastic properties of Sm0.56(Sr0.44-xMex)- MnO3 (Me = Ba, Cd, Ca) have been investigated. It is established that Sm0.56Sr0.44MnO3 exhibits a metamagnetic behaviour as well as anomalous elastic properties in a wide range of temperatures above the Curie point TC = 134 K. Small additions of Ba, Cd and Ca ions lead to (i) an inhomogenous magnetic state appearance and (ii) an irreversible metamagnetic behaviour below the Curie point. Further increase of Ba, Cd or Ca destroys the long-range ferromagnetic order giving rise to a spin-glass-like behaviour. Strongly reduced Sm0.56Ba0.44MnO2.68 is a weak ferromagnet with TN = 137 K. It is supposed that short-range charge ordering occurs in these compounds. The metamagnetic behaviour is associated with a concurrence of positive and negative superexchange interactions in the Ising antiferromagnet.
4 citations
TL;DR: In this article, the magnetic field induced metamagnetism was observed to occur with a large resistivity drop at 3 K for x Ru ≤ 0.02 samples, which can be sorted into the kind of CMR phenomenon.
4 citations
TL;DR: In this paper, the effects of substitutions of other transition metals in UNiAl considering the evolution of the 5f-d hybridization were discussed in the context of the effects induced by substitutions, and it was shown that the initial Pt substitutions lead to an increase (decrease) of the Neel temperature whereas the critical field for metamagnetism becomes gradually reduced.
4 citations