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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 magnetoresistance effect of the HfFe6Ge6-type Y1−xLaxMn6Sn6 (x = 0.1 and 0.2) compounds has been investigated in the temperature range 5-385 K.
Abstract: Magnetic transitions and the magnetoresistance effect of the HfFe6Ge6-type Y1−xLaxMn6Sn6 (x = 0.1 and 0.2) compounds have been investigated in the temperature range 5–385 K. The samples display an antiferromagnetic behaviour in the whole magnetic ordering temperature range, and their Neel temperature is 309 K and 323 K for x = 0.1 and 0.2, respectively. The metamagnetic transition from antiferromagnetism to ferromagnetism can be induced by an applied field. The metamagnetic transition field varies from 20 kOe at 5 K to 4 kOe at 300 K. The giant magnetoresistance effect is observed with the metamagnetic behaviour, such as −10.4% at 245 K for x = 0.1 under 50 kOe. Interestingly, the positive magnetoresistance for x = 0.2 appears below 110 K.
1 citations
TL;DR: In this paper, the effects of Co substitution for Mn on the structure and magnetic properties of the HoMn 6− x Co x Sn 6 compounds (0⩽ x ⩽0.25) with HfFe 6 Ge 6 -type structure (space group P6/mmm) by X-ray powder diffraction and magnetization measurements.
1 citations
1 citations
TL;DR: Magnetoresistance and magnetization measurements on pure DyMn 6 Ge 6 and low-doped Dy(mn 6 ge 6 ) 1− x (Fe 6 Al 6 ) x samples x ǫ ≥ 0.05 with the hexagonal HfFe 6 Ge6 -type structure are used to investigate the connection between magnetoresistance in these compounds.
1 citations
TL;DR: In this paper, a NMR study of CeRu2Si2 up to a magnetic field H=15.5T has revealed that the dramatic evolution in heavy-fermion (HF) state takes place through a pseudo-metamagnetic transition at T.
Abstract: Ru-NMR study of CeRu2Si2 up to a magnetic field H=15.5T has revealed that the dramatic evolution in heavy-fermion (HF) state takes place through a pseudo-metamagnetic transition at T. The HF state in H<3T is characterized by the T1T=constant relation below 8 K, whereas the 1/T1T at HM continues to increase upon cooling to 1.4 K, suggesting a very low characteristic energy. As H increases above HM, the value of 1/T1T=constant being valid far below 8 K is successively reduced with much smaller values than that for H<3 T. Appearance of the peak in 1/T1T at higher T points to an unusual renormalization process for 4f electrons to form the spin-polarized Fermi liquid state.
1 citations