233 citations · 1.9k across the 55 of their papers we have counts for
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Cooperative Ru(4d)-Ho(4f) magnetic orderings and phase coexistence in the 6H-perovskite multiferroic Ba3HoRu2O9
T. Basu, V. Caignaert, F. Damay +3
We report cooperative magnetic orderings in a 6H-perovskite multiferroic system, Ba3HoRu2O9, via comprehensive neutron powder diffraction measurements. This system undergoes long-r…
Enhancement of magnetodielectric coupling in 6H-perovskites Ba3RRu2O9 for heavier rare earth cations (R=Ho,Tb)
Tathamay Basu, Vincent Caignaert, Somnath Ghara +5
The role of rare-earth (R) ions on the magnetodielectric (MD) coupling is always intriguing and markedly different for different systems. Although many reports are available concer…
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…
Interplay between itinerant and localized states in CaMn1-xRuxO3 (x =0 - 0.5) manganites
V. Markovich, M. Auslender, I. Fita +6
Magnetic properties of polycrystalline CaMn1-xRuxO3 (x = 0 - 0.5) samples were investigated in the temperature range 4.2 - 250 K, under external magnetic field up to 15 kOe and und…
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…
Revealing polarons with high pressure on low electron-doped manganites
G. Garbarino, C. Acha, D. Vega +5
Pressure sensitivity (up to 1 GPa) of the electrical resistivity and of the ac susceptibility was measured for low electron doping levels of CaYMnO (CYMO) and of Ca…
Staircase effect in metamagnetic transitions of charge and orbitally ordered manganites
V. Hardy, S. Hebert, A. Maignan +3
This paper reports on peculiar metamagnetic transitions which take place in antiferromagnetic, charge and orbitally ordered (AFCOO) manganites. At very low temperatures, the virgin…
Induced Ferromagnetism and Colossal Magnetoresistance by Ir-Doping in Pr1-xCaxMnO3
Sylvie Hebert, Antoine Maignan, Raymond Fresard +4
The doping of the manganese site by iridium (up to 15%) in the small A cation manganites Pr_{1-x}Ca_xMnO_3 (0.4 < x < 0.8), has been investigated as a new method to suppress charge…
Large Thermopower in Metallic Oxides: Misfit Cobaltites and Mangano-Ruthenates
Sylvie Hebert, Christine Martin, Antoine Maignan +3
Two different kinds of metal transition oxides have been studied for their large thermopower values. The first one corresponds to the Tl-based misfit cobaltite which is a hole-dope…
Magnetic-history-dependent nanostructural and resistivity changes in Pr0.5Ca0.5Mn0.98Cr0.02O3
M. Hervieu, R. Mahendiran, A. Maignan +2
We show that nanostructure and resistivity of Pr0.5Ca0.5Mn0.98Cr0.02O3 are sensitive to whether the sample is zero-field-cooled (ZFC) of field-cooled (FC) either in the 'self magne…