The magnetization dynamics of magnetic nanoparticles are essential for the medical applications hyperthermia and particle imaging. In this paper, we clarified AC susceptibility superparamagnetic their frequency dependence. We measured under an applied DC bias field. dependence was clearly observed. experimentally obtained characteristics samples with different effective core diameters on intens...

Magnetic susceptibility and specific heat measurements in magnetic fields were performed on an S = 1/2 one-dimensional antiferromagnet KCuGaF6. Exchange interaction was evaluated as J/kB ≃ 100 K. However, no magnetic ordering was observed down to 0.46 K. It was found that an applied magnetic field induces a staggered magnetic susceptibility obeying the Curie law and an excitation gap, both of w...

The magnetic susceptibility (MS) in soils is a fast and non-destructive technique that can be used to infer the concentration of magnetic minerals. The objective of this study was to analyze MS on topsoil and bulk core samples of cultivated Calcisols. Magnetic susceptibility was measured at two different frequencies to assess the variation of magnetic susceptibility when the frequency of the ap...