H. Nakotte

Electronic properties of

We report on the electronic properties of , which crystallizes in a hexagonal structure with space group . Anomalies in the temperature dependences of the transport, magnetic and thermal properties indicate that two magnetic transitions occur at and , the lower transition being of antiferromagnetic type. The assertion that the ground state of is antiferromagnetic is corroborated by magnetization measurements, which reveal a slight S shape in the M versus B curve with no indication of saturation in fields up to 18 T at 2.2 K. The electrical resistivity increases with lowering temperature, reaching a value of at 0.26 K. Magnetoresistance studies at low temperatures show that a large part of the zero-field resistance is due to antiferromagnetic correlations, and a resistivity drop of is observed upon the application of a field of 18 T at 2 K. Another striking feature is the enhanced Sommerfeld coefficient of , extracted from extrapolation of the specific-heat data to T = 0 K, which we report here for the first time. Therefore, can be described as a moderately enhanced heavy-fermion system.

Magnetic structure of antiferromagnetic NdRhIn5

The magnetic structure of antiferromagnetic NdRhIn 5 has been determined using neutron diffraction. It has a commensurate antiferromagnetic structure with a magnetic wave vector (0) below T N = 11 K. The staggered Nd moment at 1.6 K is 2.5(1)μ B aligned along the c axis. This magnetic structure is closely related to the low-temperature magnetic structure of the cubic parent compound NdIn 3 .

Magnetocrystalline anisotropy in a single crystal of CeNiGe 2

We report measurements on single crystals of orthorhombic

Superconductivity in magnetically ordered CeTe1.82

{\mathrm{CeNiGe}}_{2},

Giant magnetoresistance in intermetallics

which is found to exhibit highly anisotropic magnetic and transport properties. The magnetization ratio

ELECTRONIC PROPERTIES OF UCo4B

M(H\ensuremath{\parallel}b)/M(H\ensuremath{\perp}b)

Unusual signatures of the ferromagnetic transition in the heavy fermion compound UMn2Al20

at 2 K is observed to be about 18 at 4 T and the electrical resistivity ratio

Magnetic phase transitions in CePtSn

{\ensuremath{\rho}}_{\ensuremath{\parallel}b}/{\ensuremath{\rho}}_{\ensuremath{\perp}b}

μSR magnetic response of CeCuSn

is about 70 at room temperature. It is confirmed that

Pressure effects on antiferromagnetism in UNiAl

{\mathrm{CeNiGe}}_{2}