Anomalous itinerant-electron metamagnetic transition in the layeredSr1−xCaxCo2P2system

Large magnetovolume effects and band structure of itinerant-electron metamagnetic La(FexSi1-x)13 compounds

Metamagnetic transition in EuFe2As2 single crystals

We report the measurements of anisotropic magnetization and magnetoresistance on single crystals of EuFe2As2, a parent compound of ferro-arsenide hightemperature superconductor. Apart from the antiferromagnetic (AFM) spin-densitywave transition at 186 K associated with Fe moments, the compound undergoes another magnetic phase transition at 19 K due to AFM ordering of Eu spins (J = S = 7/2). The...

Anomalous scaling at the quantum critical point in itinerant antiferromagnets.

We show that the Hertz phi(4) theory of quantum criticality is incomplete as it misses anomalous nonlocal contributions to the interaction vertices. For antiferromagnetic quantum transitions, we found that the theory is renormalizable only if the dynamical exponent z=2. The upper critical dimension is still d=4 - z=2; however, the number of marginal vertices at d=2 is infinite. As a result, the...

METAMAGNETIC TRANSITION IN Hf (Fe1-xCox)2

Magnetization process of the Laves phase compound Hf (Fel-,Co,)2 is investigated under pulsed fields up to 40 T. A sharp collapse of the spontaneous moment is observed at x, = 0.65 where ferromagnetism vanishes. In the paramagnetic region x, < x 1 0.75, itinerant electron metamagnetism is found. The results can be interpreted by the recent band calculation. C15 cubic Laves phase intermetallic c...

Magnetostriction at the Metamagnetic Phase Transition in (Lu0.8Ce0.2)2Fe17

Abstract. The antiferromagnetic state, observed in Lu2Fe17 at elevated temperatures, is stabilized in (Lu0.8Ce0.2)2Fe17 over the whole magnetically ordered range below TN = 247 K. The compound exhibits easy-plane magnetic anisotropy and a metamagnetic transition at fields below 1 T. The magnetostriction at the metamagnetic transition was studied by both bulk (the capacitor method on a single cr...