40 citations · 97 across the 9 of their papers we have counts for
5 papers · 1 filter
Oxygen hyperstoichiometric hexagonal ferrite CaBaFe4O7+δ(δ\approx 0.14) : coexistence of ferrimagnetism and spin glass behavior
Tapati Sarkar, V. Duffort, V. Pralong +2
An oxygen hyperstoichiometric ferrite CaBaFe4O7+δ(δ\approx 0.14) has been synthesized using "soft" reduction of CaBaFe4O8. Like the oxygen stoichiometric ferrimagnet CaBaFe4O7, thi…
Enhancement of giant magnetoresistance effect in the Ruddlesden-Popper phase Sr3Fe2-xCoxO7-d: Predominant role of oxygen nonstoichiometry and magnetic phase separation
T. Motohashi, B. Raveau, M. Hervieu +4
The magnetic and magnetotransport properties of the Sr3Fe2-xCoxO7-d system (0.2 <= x <= 1.0) were systematically investigated. This oxide system exhibits a giant magnetoresistance…
Non-linear effects and Joule heating in I-V curves in manganites
Silvana Mercone, Raymond Fresard, Vincent Caignaert +6
We study the influence of the Joule effect on the non-linear behavior of the transport I-V curves in polycrystalline samples of the manganite Pr0.8Ca0.2MnO3 by using the crystallin…
Competition between ferromagnetism and spin glass: the key for large magnetoresistance in oxygen deficient perovskites SrCo1-xMxO3-d (M = Nb, Ru)
T. Motohashi, V. Caignaert, V. Pralong +3
The magnetic and magnetotransport properties of the oxygen deficient perovskites, SrCo1-xMxO3-d with M = Nb and Ru, were investigated. Both Nb- and Ru-substituted cobaltites are we…
The impact of niobium doping upon the magnetotransport properties of the oxygen-deficient perovskite SrCo1-xNbxO3-d
T. Motohashi, V. Caignaert, V. Pralong +3
The oxygen-deficient perovskite cobaltite SrCo1-xNbxO3-d was synthesized by direct solid-state reaction and its magnetotransport properties were investigated. This cobaltite exhibi…