NONLINEAR MAGNETO-OPTICS OF MAGNETIC THIN FILMS

Linear and nonlinear magneto-optics of ferritin.

Measurements of Rayleigh light scattering and Cotton-Mouton (CM) effect are carried out at room temperature for 100 mM NaCl solutions of apoferritin/ferritin loaded with 0, 90, 100, 500, 700, and 1500 Fe atoms/molecule. Because of the spherical shape, ferritin macromolecule should not manifest magnetic anisotropy; however, in solution it shows the induced magnetic birefringence (CM effect) and ...

Magneto-optical properties of MnBiAl thin films

Nonlinear laser spectroscopy and magneto-optics

s, Windsor 1998, p. 345; W. K. Hensinger, A. G. Truscott, H. Rubinsztein-Dunlop, and N. R. Heckenberg, ‘‘Variations of relative line intensity in saturation spectroscopy due to low magnetic fields,’’ submitted to Opt. Quantum Electron. This cell was manufactured in the early sixties and is a leftover from the intense investigations of optical pumping carried out at UC Berkeley at that time; see...

Hard Magnetic Thin Films

Hard magnetic films have a broad application area ranging from magnetic recording media to microelectromagnetic devices. A challenge for recording media is the 60% annual increase in areal density, which requires ever smaller magnetic dots. However, for a given magnetic anisotropy the reduction of dot size is limited, since below a critical magnetic volume the magnetisation becomes thermally un...

Nonlinear optics of random metal-dielectric films

Surface-enhanced optical nonlinearities are studied in a semicontinuous film consisting of metal granules randomly distributed on an insulating substrate. The local fields are very inhomogeneous in such films and consist of strongly localized sharp peaks. In peaks ~‘‘hot’’ spots!, the local fields exceed the applied field by several orders of magnitudes resulting in giant enhancements of the op...