Compact permanent magnetic circuit with periodic magnetic field designed for studies of liquid crystals

Citation
M. Hirai et al., Compact permanent magnetic circuit with periodic magnetic field designed for studies of liquid crystals, MOLEC CRYST, 367, 2001, pp. 3429-3438
Citations number
14
Categorie Soggetti
Physical Chemistry/Chemical Physics
Volume
367
Year of publication
2001
Pages
3429 - 3438
Database
ISI
SICI code
Abstract
We have developed a high-performance compact magnetic circuit to investigat e orientational phase behaviors of biological and synthetic macromolecular systems by using spectroscopic methods such as X-ray scattering and light s cattering. This magnetic circuit can apply a periodic magnetic field and gr adient to samples. The maximum values of the magnetic field strength and gr adient are varied from 1.5 tesla to 0.55 tell, and from 2.4x10(2) tesla/m t o 7.3x10(1) tesla/m. Owing to the high periodicity of the magnetic field st rength and gradient macromolecules are subjected to both rotational and tra nslational forces from the magnetic field. We show some prominent features of this magnetic circuit and its first application to the synchrotron radia tion small-angle X-ray scattering (SR-SAXS) studies of supermacromolecular liquid crystals.