OPTICAL-SCATTERING AND X-RAY-SCATTERING STUDIES OF IONIC FERROFLUIDS OF MNFE2O4,GAMMA-FE2O3, AND COFE2O4

Authors
DASILVA MF NETO AMF
Citation
Mf. Dasilva et Amf. Neto, OPTICAL-SCATTERING AND X-RAY-SCATTERING STUDIES OF IONIC FERROFLUIDS OF MNFE2O4,GAMMA-FE2O3, AND COFE2O4, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics, 48(6), 1993, pp. 4483-4491
Citations number
21
Categorie Soggetti
Physycs, Mathematical","Phsycs, Fluid & Plasmas
Journal title
Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics → ACNP
ISSN journal
1063651X
Volume
48
Issue
6
Year of publication
1993
Pages
4483 - 4491
Database
ISI
SICI code
1063-651X(1993)48:6<4483:OAXSOI>2.0.ZU;2-J
Abstract
Ionic ferrofluids of MnFe2O4, gamma-Fe2O3, and CoFe2O4 has been invest igated by means of optical- and x-ray-scattering techniques. The optic al birefringence measured as a function of temperature, without any ma gnetic field, showed the existence of a nematic-type order in these ma terials. Scattering results indicate the existence of bundlelike aggre gates in Mn samples. The origin of the birefringence is discussed in t erms of the shape anisotropy of the magnetic particles.