132 citations · 413 across the 8 of their papers we have counts for
8 papers
Synthesis, characterization and magnetic properties of room-temperature nanofluid ferromagnetic graphite
N. S. Souza, S. Sergeenkov, C. Speglich +7
We report the chemical synthesis route, structural characterization, and physical properties of nanofluid magnetic graphite (NFMG) obtained from the previously synthesized bulk org…
Spin Glass Behavior in RuSr2Gd1.5Ce0.5Cu2O10
C. A. Cardoso, F. M. Araujo-Moreira, V. P. S. Awana +4
The dynamics of the magnetic properties of polycrystalline RuSr2Gd1.5Ce0.5Cu2O10 (Ru-1222) have been studied by ac susceptibility and dc magnetization measurements, including relax…
Specific heat at low temperatures and magnetic measurements in Nd0.5Sr0.5MnO3 and R0.5Ca0.5MnO3 (Nd, Sm, Dy and Ho) samples
J. Lopez, O. F. de Lima, P. N. Lisboa-Filho +1
We studied the magnetization as a function of temperature and magnetic field in the compounds Nd0.5Sr0.5MnO3, Nd0.5Ca0.5MnO3, Sm0.5Ca0.5MnO3, Dy0.5Ca0.5MnO3 and Ho0.5Ca0.5MnO3. Fer…
Irreversible magnetization under rotating fields and lock-in effect on ErBa_2Cu_3O_7 single crystal with columnar defects
M. A. Avila, L. Civale, A. V. Silhanek +3
We have measured the irreversible magnetization M_i of an ErBa_2Cu_3O_7 single crystal with columnar defects (CD), using a technique based on sample rotation under a fixed magnetic…
Study of magnetic and specific heat measurements at low temperatures in Nd0.5Sr0.5MnO3 and Nd0.5Ca0.5MnO3
J. Lopez, P. N. Lisboa-Filho, O. F. de Lima +1
The magnetization at low temperatures for Nd0.5Sr0.5MnO3 and Nd0.5Ca0.5MnO3 samples showed a rapid increase with decreasing temperatures, contrary to a La0.5Ca0.5MnO3 sample. Speci…
Angular dependence of the bulk nucleation field Hc2 of aligned MgB2 crystallites
O. F. de Lima, C. A. Cardoso, R. A. Ribeiro +2
Studies on the new MgB2 superconductor, with a critical temperature Tc ~ 39 K, have evidenced its potential for applications although intense magnetic relaxation effects limit the…