55 citations · 120 across the 4 of their papers we have counts for
4 papers
Pressure effects in hollow and solid iron oxide nanoparticles
N. J. O. Silva, S. Saisho, M. Mito +5
We report a study on the pressure response of the anisotropy energy of hollow and solid maghemite nanoparticles. The differences between the maghemite samples are understood in ter…
Shifted loops and coercivity from field imprinted high energy barriers in ferritin and ferrihydrite nanoparticles
N. J. O. Silva, V. S. Amaral, A. Urtizberea +8
We show that the coercive field in ferritin and ferrihydrite depends on the maximum magnetic field in a hysteresis loop and that coercivity and loop shifts depend both on the maxim…
Temperature dependence of antiferromagnetic susceptibility in ferritin
N. J. O. Silva, A. Millan, F. Palacio +4
We show that antiferromagnetic susceptibility in ferritin increases with temperature between 4.2 K and 180 K (i. e. below the Néel temperature) when taken as the derivative of the…
Evidence of random magnetic anisotropy in ferrihydrite nanoparticles based on analysis of statistical distributions
N. J. O. Silva, V. S. Amaral, L. D. Carlos +7
We show that the magnetic anisotropy energy of antiferromagnetic ferrihydrite depends on the square root of the nanoparticles volume, using a method based on the analysis of statis…