Caption: FIGURE 6: Dependence of magnetic hysteresis
loop (a) and Ms and Hc (b) for the as-quenched [([Fe.sub.0.39] [Co.sub.0.15] [Ni.sub.0.46]).sub.80] [B.sub.14][Si.sub.6] ribbon on the annealing temperature ranging from 678 K to 738 K.
An interesting, negative magnetic hysteresis
loop indicating antiferromagnetic behavior was measured in the Al-Co-doped zinc oxide film and interpreted via a twolayer model where the film consists of layers with two different magnetic moments and substantiated by the unique behavior in the S parameter of the Co-Al:ZnO film arising from layers with different defect structures.
Caption: FIGURE 5: Magnetic hysteresis
curve of (a) water-based LTE MNPs ferrofluid and (b) magnetic nanoparticles.
The measured magnetic hysteresis
loops for the two different-sized [Co.sub.2]Z hexaferrites are presented in Fig.
The magnetic hysteresis
loops of the samples are illustrated in Fig.
where [P.sub.Fe] is total iron core loss of unit mass, [P.sub.h] is magnetic hysteresis
loss of unit mass, [P.sub.e] is eddy current loss of unit mass, and [P.sub.ex] is additional loss of unit mass.
Furthermore, the complex showed a magnetic hysteresis
loop below 0.5 K.
Khosroshahi, an associate professor at Amirkabir University of Technology managed to prepare mono, bi, and tri-layer nanoparticles of Fe3O4, Fe3O4/SiO2 and Fe3O4/SiO2/Au with respective dimensions of 30, 50, and 70 nm as the initial phase.Then, he measured most of important magnetic properties such as saturation magnetization, magnetic hysteresis
, magnetic residue (magnetic remanence), coercivity, bulk saturation, magnetic moment and specific area of the particles by BET and VSM devices."In the initial step to fight against the lung cancer cells (apaptosis), a culture medium containing these cells (QU-DB) was prepared in collaboration with Pasteur Institute of Iran.
Figure 4 shows the magnetic hysteresis
loops obtained for some composites.
In a material such as G[d.sup.[0.94]]E[r.sup.[0.06]] that exhibits a second-order phase transition above the magnetic ordering temperature, magnetic hysteresis
does not exist.
effects can also affect the geometric factor.
Another challenge for HTS magnets is ac losses, both in the form of magnetic hysteresis
and heat-generating eddy currents that add to the refrigeration load.