Abstract
A dynamic birefringence in a ferrocolloid placed in constant and variable crossed magnetic fields is considered. It is assumed that the energy of magnetic anisotropy of colloid nanoparticles is finite so that a magnetic moment can rotate both inside the particle and together with the particle. This “two-channel” pattern of a process significantly affects the kinetics of colloid macroscopic birefringence, that is the character of low-frequency dispersion of this value. Theoretical model is based on the generalized Fokker–Planck equation describing the interaction of internal and external orientational diffusion in a magnetic particle. Calculation results are presented in the form of so-called integral relaxation time; the convenience of this value for the characterization of multimode transient processes is shown.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
REFERENCES
Skibin, Yu.N., Chekanov, V.V., and Raikher, Yu.L., Zh. Eksp. Teor. Fiz., 1977, vol. 72, no. 3, p. 496.
Bacri, J.-C. and Perzynski, R., Lecture Notes in Physics: Complex Fluids, Carrido, L., Ed., Berlin: Springer-Verlag, 1993, p. 85.
Hasmonay, E., Dubois, E., Bacri, J.-C., et al., Eur. Phys. J. B, 1998, vol. 5, no. 3, p. 859.
Hasmonay, E., Depeyrot, J., Sousa, M.H., et al., J. Appl. Phys., 2000, vol. 88, no. 11, p. 6628.
Buzmakov, V.M. and Pshenichnikov, A.F., Kolloidn. Zh., 2001, vol. 63, no. 3, p. 305.
Hasmonay, E., Dubois, E., Neveu, S., et al., Eur. Phys. J. B, 2001, vol. 21, no. 1, p. 19.
Raikher, Yu.L. and Stepanov, V.I., Europhys. Lett., 1995, vol. 32, no. 7, p. 589.
Raikher, Yu.L. and Skibin, Yu.N., Dokl. Akad. Nauk SSSR, 1988, vol. 302, no. 5, p. 1088.
Raikher, Yu.L. and Scholten, P.C., J. Magn. Magn. Mater., 1988, vol. 74, no. 3, p. 275.
Raikher, Yu.L. and Shliomis, M.I., Adv. Chem. Phys., 1994, vol. 87, p. 595.
Stepanov, V.I. and Shliomis, M.I., Izv. Akad. Nauk SSSR, Ser. Fiz., 1991, vol. 55, no. 1, p. 1.
Shliomis, M.I. and Stepanov, V.I., J. Magn. Magn. Mater., 1993, vol. 122, nos. 1-3, p. 176; p. 196.
Shliomis, M.I. and Stepanov, V.I., Adv. Chem. Phys., 1994, vol. 87, p. 1.
Brown, W.F., Jr., Phys. Rev., 1963, vol. 130, no. 9, p. 1677.
Ullman, R., J. Chem. Phys., 1972, vol. 56, no. 8, p. 1869.
Martsenyuk, M.A., Raikher, Yu.L., and Shliomis, M., Zh. Eksp. Teor. Fiz., 1973, vol. 65, no. 2, p. 834.
Risken, H., The Fokker-Planck Equation, Berlin: Springer-Verlag, 1984.
Coffey, W.T., Cregg, P.J., Crothers, D.S.F., et al., J. Magn. Magn. Mater., 1994, vol. 131, no. 2, p. L103.
Raikher, Yu.L., Stepanov, V.I., Grigorenko, A.N., and Nikitin, P.I., Phys. Rev. E: Stat. Phys., Plasmas, Fluids, Relat. Interdiscip. Top., 1997, vol. 56, no. 6, p. 6400.
Aharoni, A., Phys. Rev., 1969, vol. 177, no. 5, p. 799.
Blum, E.Ya., Maiorov, M.M., and Tzebers, A.O., Magnitnye zhidkosti (Magnetic Fluids), Riga: Zinatne, 1989.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Raikher, Y.L., Stepanov, V.I. Dynamic Birefringence in Ferrocolloids in Crossed Fields: Interaction of Magnetic and Mechanical Orientational Degrees of Freedom. Colloid Journal 65, 65–77 (2003). https://doi.org/10.1023/A:1022323125786
Issue Date:
DOI: https://doi.org/10.1023/A:1022323125786