Excitation of magnetic precession in bismuth iron garnet via a polarization-independent impulsive photomagnetic effect

Excitation of magnetic precession in bismuth iron garnet via a polarization-independent impulsive photomagnetic effect

Magnetic and Optical Studies of Structure of Co-Doped Bismuth-Iron-Garnet

Using an alternating reactive ion &am sputtering technique, Co ion was doped in epitaxially growing Bi3Fe5Ol, garnet film. The intense enhancement of magnetization, coercivity, and optical absorption at 633nm was observed. The Faraday hysteresis loop for slightly Cwdoped film showed anomalous behavior. Those phenomena can be understood considering the composite film structure in which fine part...

Femtosecond photomagnetic switching of spins in ferrimagnetic garnet films.

We demonstrate that intense laser pulses can be used to directly control the spins in ferrimagnetic garnet films. Through an ultrafast and nonthermal photomagnetic effect the magnetocrystalline anisotropy is modified to create a new long-lived equilibrium orientation for the magnetization. Simultaneously, the magnetization is rotated into this new state by precession in a strong transient optic...

Polarization Precession

Deduce an expression for the rate of precession of the spin polarization unit vector P̂ of a relativistic charged particle in laboratory electric and magnetic fields E and B. The polarization vector is to be measured in the so-called comoving rest frame of the particle obtained by boosting from the lab frame along the direction l̂ that is tangent the the particle’s laboratory trajectory, and whos...

Optical and magnetooptical properties of bismuth and gallium substituted iron garnet films

A series of iron garnet films of composition Lu Bi Fe Ga O grown on (100) oriented GGG substrates have been studied 3yx x 5yy y 12 using variable angle spectroscopic ellipsometry and polar Kerr spectroscopy (MOKE). The diagonal and off-diagonal components of the permittivity tensor have been determined in the range 1–5 eV. Our results seem to be in accordance with previously reported measuremen...