Optical magnetic anisotropy

The aim of this article is to show that the new quasi-two-dimensional organic conductor p -(BEDO-TTF)5[CsHg(SCN)4]2 [hereafter called (BEDO)CsHg] (BEDO-TTF - bis-(ethylenedioxy)tetrathiafulvalene) which contains closed and open orbits displays rather complicated oscillatory spectra associated with magnetic breakdown (MB) and quantum interference (QI) effects. Tight binding band structure calculations for this compound are proposed to characterise its Fermi surface. The aim of the article includes also an investigation of the optical conductivity anisotropy with polarized infrared reflectance spectra. 

A. Peterlin and H. A. Stuart, The determination of the size and shape, as well as the electrical, optical and magnetic anisotropy of submicroscopic particles with the aid of artificial double regraction and inner viscosity, Z. Phys., 112,129 (1939). 

Low magnetic anisotropy Transparency Optical changes Low elastic moduli... 

The Cotton-Mouton effect, magnetic anisotropy, and charge localization of 2,4,6-tris(dimethyl-amino)-1,3,5-triazine compared with 1,3,5-triazine have been examined <91JST(248)20l>. Dilute solution Kerr and Cotton-Mouton constants were measured for both 1,3,5-triazine and 2,4,6-tris(dimethylamino)-l,3,5-triazine. These constants were then used to derive experimental values for the optical-frequency polarizability anisotropies, and more importantly the magnetic anisotropies of... 

As molecular motion in a gas or liquid is free and random, the physieal properties of these fluids are the same no matter in what direetion they are measured. In other words, they are isotropic. True amorphous solids, beeause of the random arrangement of their constituent molecules, are also isotropic. Most crystals, however, are anisotropic, their mechanical, electrical, magnetic and optical properties can vary according to the direction in which they are measured. Crystals belonging to the cubic system are the exception to this rule their highly symmetrical internal arrangement renders them optically isotropic. Anisotropy is most readily detected by refractive index measurements, and the striking phenomenon of double refraction exhibited by a clear crystal of Iceland spar (calcite) is probably the best-known example. 

A systematic smdy of magnetic anisotropy in Fe/rare-earth multilayers, Proc. Magneto-Optical Recording Int. Symp. 92, Tucson, AZ, USA,... 

The examples above demonstrate that today s electronic structure methods for solids are surprisingly advanced in the calculation of magnetic properties including subtle effects such as magnetic anisotropy. Similarly, the prediction of dielectric response functions and optical properties is showing excellent progress and could soon develop into a routine tool. It is likely that the prediction of transport properties or other materials characteristics which depend on the dynamics of the atoms. 

Qian, J.-P. and Wang, G.-C. (1990). A simple ultrahigh vacuum surface magneto-optical Kerr effect setup for the study of surface magnetic anisotropy. /. Vac. Sci. Technol. A, 8 4117-4119. 

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