Magnetic behavior of cosputtered Fe-Zr amorphous thin films exhibiting perpendicular magnetic anisotropy

Anomalous second ferromagnetic phase transition as a signature of spinodal decomposition in Fe-doped GeTe diluted magnetic semiconductor

“…1(b)) as well as the c-axis orientated rhombohedral (ferroelectric phase) structure may lead the magnetic anisotropy. 9,10 Figure 3 shows the zero-field cooling (ZFC) and field cooling (FC) temperature dependent magnetization (M-T) curves under different in-plane applied fields for Ge 0.98 Fe 0.02 Te film. At low temperatures, a large bifurcation between the ZFC and FC curves and a cusp in ZFC curve are observed, which brings on the central issue in magnetic system: whether the magnetic ground state is a conventional ferromagnet or spin glass or superparamagnetic system.…”

On the growth and magnetic properties of flower-like nanostructures formed on diffusion of FePt with Si substrate

“…A pronounced peak at $ 80 K in M(T) curves and a large value of saturation magnetic field in the hysteresis loop measured at 5 K are noticeable. In the first appearance, the observed magnetic features resembled with the materials exhibiting (1) superparamagnetism [42,43], (2) a spin reorientation tranistion (SRT) from out of plane to inplane with increasing temperature [44], and (3) a mixture of ferromagnetic and antiferromagnetic phases [45][46][47][48][49][50]. If the films are superparamagnetic, peak in ZFC and FC should shift toward the lower temperature with measurements performed under higher magnetic fields.…”

“…It is also reported that a mixture of antiferromagnetic and ferromagnetic (FM) materials can exhibit exchange bias effect [47,48]. The exchange bias is of great technical importance because of its applications in various spin-controlled sensors and highdensity magnetic memories.…”

An in situ neutron diffraction study of the thermal disproportionation of the Zr2FeD5 system

“…Amorphous (a-) phases can also be formed from the Zr 1−x Fe x system over a very wide Fe composition range (ca. 0.27 < x Fe < 0.79) (mechanically milled alloys) [9,10], and >90 at.% Fe in melt spins [11] and thin films [12,13], and are of great interest for their unique magnetic properties.…”