Neutron scattering study on CeAgAs2

Doert, Th.; Schneidewind, A.; Hölzel, Markus; Stockert, O.; Rutzinger, D.; Ruck, Michael

doi:10.1016/j.jmmm.2011.11.001

Cited by 4 publications

(16 citation statements)

References 14 publications

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“…Furthermore, in magnetic fields stronger than 0.5 T, the temperature variations of the heat capacity and the electrical resistivity distinctly change their character. The saturated magnetic moment is equal to 1 µ B , in good agreement with the neutron diffraction data [11], as well as the results of band structure calculations performed with the Coulomb parameter U = 6 eV.…”

Section: Discussionsupporting

confidence: 87%

“…By minimizing the total energy of such a magnetic supercell in the self-consistent field calculation the following values of the magnetic moments were obtained: +1.0142, +1.0135 and −1.0142, −1.0135 µ B per nonequivalent Ce site in two adjacent planes, respectively. The Ce moment of about 1.01 µ B is in accord with the results of the magnetization measurements (see above) and the neutron diffraction experiment [11].…”

Section: Band Structure Calculationssupporting

confidence: 89%

“…The variation measured along [010], being clearly the hard magnetic direction, is linear up to a limiting field of 5 T. In contrast, the magnetization measured with the magnetic field applied perpendicular to [010] shows a rapid increase near 0.5 T, and then tends towards saturation in stronger fields. The magnetic moment measured at 5 T has a value of 1 µ B , in perfect agreement with the neutron diffraction data [11].…”

Section: Crystal Structuresupporting

confidence: 85%

“…[12]. The negative sign of T manifests strong ferromagnetic interactions between magnetic moments within the (010) plane, as revealed by neutron diffraction measurements [11]. To elucidate the source of the low-temperature upturn in the electrical resistivity, the resistivity measurements were performed with magnetic field oriented along the [010] axis, being hard magnetic direction.…”

Section: Magnetotransport Propertiesmentioning

confidence: 99%

“…The evolution of the Néel temperature, defined as a maximum in the first derivative of the resistivity dρ/dT with magnetic field is shown in Figure 11b. Figure 12 depicts the magnetic field dependence of the MR taken with external magnetic field oriented along the [010] axis, i.e., perpendicular to the magnetic moments which are confined within the crystallographic (010) plane [11]. Between 2 and 10 K, ∆ρ/ρ is negative in the entire field range.…”

Section: Magnetotransport Propertiesmentioning

confidence: 99%

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Antiferromagnetic Ordering and Transport Anomalies in Single-Crystalline CeAgAs2

et al. 2020

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Single crystals of the ternary cerium arsenide CeAgAs2 were grown by chemical vapor transport. They were studied by means of x-ray diffraction, magnetization, heat capacity and electrical transport measurements. The experimental research was supplemented with electronic band structure calculations. The compound was confirmed to order antiferromagnetically at the Néel temperature of 4.9 K and to undergo metamagnetic transition in a field of 0.5 T at 1.72 K. The electrical resistivity shows distinct increase at low temperatures, which origin is discussed in terms of pseudo-gap formation in the density of states at the Fermi level and quantum corrections to the resistivity in the presence of atom disorder due to crystal structure imperfections.

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Section: Discussionsupporting

confidence: 87%

Section: Band Structure Calculationssupporting

confidence: 89%

Section: Crystal Structuresupporting

confidence: 85%

Section: Magnetotransport Propertiesmentioning

confidence: 99%

Section: Magnetotransport Propertiesmentioning

confidence: 99%

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