67 citations · 382 across the 15 of their papers we have counts for
15 papers
Increase in the magnitude of the energy barrier distribution in Ni nanoparticles due to dipolar interactions
S. H. Masunaga, R. F. Jardim, R. S. Freitas +1
The energy barrier distribution Eb of five samples with different concentrations x of Ni nanoparticles using scaling plots from ac magnetic susceptibility data has been determined.…
Role of dipolar interactions in a system of Ni nanoparticles studied by magnetic susceptibility measurements
S. H. Masunaga, R. F. Jardim, P. F. P. Fichtner +1
The role of dipolar interactions among Ni nanoparticles (NP) embedded in an amorphous SiO2/C matrix with different concentrations has been studied performing ac magnetic susceptibi…
Identification of a Marginal Fermi-Liquid in Itinerant Ferromagnet CoS2
M. Otero-Leal, F. Rivadulla, M. Garcia-Hernandez +4
We report specific heat, resistivity and susceptibility measurements at different temperatures, magnetic fields, and pressures to provide solid evidence of CoS2 being a marginal Fe…
Enhanced dimerization of TiOCl under pressure: spin-Peierls - to - Peierls transition
S. Blanco-Canosa, F. Rivadulla, A. Pineiro +6
We report high-pressure x-ray diffraction and magnetization measurements combined with ab-initio calculations to demonstrate that the high-pressure optical and transport transition…
Homopolar bond formation in ZnVO close to a metal-insulator transition
V. Pardo, S. Blanco-Canosa, F. Rivadulla +4
Electronic structure calculations for spinel vanadate ZnVO show that partial electronic delocalization in this system leads to structural instabilities. These are a consequ…
Pressure-induced metal-insulator transition in MgV_2O_4
D. Baldomir, V. Pardo, S. Blanco-Canosa +4
On the basis of experimental thermoelectric power results and ab initio calculations, we propose that a metal-insulator transition takes place at high pressure (approximately 6 GPa…