Author/Authors :
Srikanth، نويسنده , , Anna H. and Carpenter، نويسنده , , E.E. and Spinu، نويسنده , , L. and Wiggins، نويسنده , , J. and Zhou، نويسنده , , W.L. and O’Connor، نويسنده , , C.J.، نويسنده ,
Abstract :
A precision radio-frequency (RF) transverse modulation technique based on a resonant tunnel diode oscillator (TDO) has been used to study the dynamic transverse susceptibility in novel single domain Fe nanoparticles synthesized using reverse-micelle chemistry. The RF data exhibits peaks at characteristic anisotropy fields. In addition, the dynamic susceptibility shows remarkable consistency with static magnetic measurements (MH) done using a SQUID magnetometer. Overall, these RF experiments are well suited to probe the magnetic anisotropy in nanophase materials.
Keywords :
Nanoparticles , Transverse susceptibility , Magnetic anisotropy , hysteresis
