Topic
Metamagnetism
About: Metamagnetism is a research topic. Over the lifetime, 2023 publications have been published within this topic receiving 38108 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, electrical resistivity measurements in a magnetic field are carried out on UGe2 which exhibits pressure-induced superconductivity from 1.06 to 1.44 GPa, and it is observed that the application of an external field along the a-axis increases the coefficient A of the Fermi-liquid behaviour (∝ AT2) abruptly.
Abstract: Electrical resistivity measurements in a magnetic field are carried out on UGe2 which exhibits pressure-induced superconductivity. The superconductivity is observed from 1.06 to 1.44 GPa. In the temperature and field dependences of the resistivity at P > PC where the ferromagnetic ordering disappears, it is observed that the application of an external field along the a-axis increases the coefficient A of the Fermi-liquid behaviour (∝ AT2) abruptly—corresponding to the metamagnetic transition. The characteristic enhancement of HC2 is reconfirmed for H ∥ a-axis. The upper critical field of HC2 is anisotropic: HC2 (T) exhibits positive curvature for H ∥ b-axis and H ∥ c-axis.
12 citations
TL;DR: In this article, the magnetic properties of four compounds in the series CaBaCo 4− x − y Zn x Al y O 7 (x = 0,1,2, y =0,1) were investigated using AC-susceptibility and DC-magnetometry.
12 citations
TL;DR: The structural phase transition induced by magnetic fields on MnAs was observed by the X-ray diffraction measurements in high magnetic fields up to 4 T. Magnetization measurements showed that Curie temperature TC was 315.5 K for increasing temperatures and a metamagnetic transition from the paramagnetic to the ferromagnetic state occurred above TC as discussed by the authors.
Abstract: The structural phase transition induced by magnetic fields on MnAs was observed by the X-ray diffraction measurements in high magnetic fields up to 4 T . Magnetization measurements showed that Curie temperature TC was 315.5 K for increasing temperatures and a metamagnetic transition from the paramagnetic to the ferromagnetic state occurred above TC. The structural transformation from the hexagonal NiAs-type to the orthorhombic MnP-type structure was confirmed at TC with increasing temperature from 290 to 319 K via two-phase coexistence region. The X-ray diffraction profiles at 319 K showed the single phase of the MnP-type structure in zero field and applying magnetic field of 3 T caused appearance of the Brag peak of the hexagonal structure. On further increase of magnetic fields, the single phase of the hexagonal structure was observed above 3.5 T in the forced ferromagnetic state. Both the magnetic and structural transitions induced by magnetic fields above TC were first order with a hysteresis and had a close relationship between each other.
12 citations
TL;DR: The Jahn-Teller effect and metamagnetic transition in single crystalline PrCu 2 have been studied by thermal expansion and magnetostriction measurements in the paramagnetic state as discussed by the authors.
Abstract: The Jahn-Teller effect and metamagnetic transition in single crystalline PrCu 2 have been studied by thermal expansion and magnetostriction measurements in the paramagnetic state. The linear thermal expansion in the temperature range from 1.8 to 300 K is found to be quite anisotropic in the whole temperature range, which is due to the highly anisotropic crystalline electric field. The magnetostrictions along the three crystallographic axes in the field along the c -axis also indicate anisotropic behavior with an extremely large length change and large hysteresis. It is clarified that the metamagnetic transition with the conversion of the Ising axis in PrCu 2 is due to the large modification of the crystalline electric field by the field-induced structural phase transition.
12 citations
TL;DR: The effect of hydrostatic pressure on resistivity and magnetic ac susceptibility has been studied in Mn-doped CdGeAs2 room-temperature (RT) ferromagnetic chalcopyrite with two types of MnAs micro-clusters as mentioned in this paper.
Abstract: The effect of hydrostatic pressure on resistivity and magnetic ac susceptibility has been studied in Mn-doped CdGeAs2 room-temperature (RT) ferromagnetic chalcopyrite with two types of MnAs micro-clusters. The slight increase of temperature by about 30 K in the region between RT and Curie temperature TC causes a significant change in the positions of pressure-induced semiconductor-metal transition and magnetic phase transitions in low pressure area. By conducting measurements of the anomalous Hall resistance in the field H ≤ 5 kOe, we present experimental evidence for pressure-induced metamagnetic-like state during the paramagnetic phase at pressure P ≈ 5 GPa.
12 citations