Characterization of the electrical behaviour of rare earth elements during the upgrading of monazite

• Published in: Journal of physics. D, Applied physics Applied physics, 2004-03, Vol.37 (5), p.764-769
• Main Authors: Radwan, R M, Fawzy, Y H A, Ashry, H A, Soliman, F A S
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Dielectric loss and relaxation; Dielectric properties of solids and liquids; Dielectrics, piezoelectrics, and ferroelectrics and their properties; Earth sciences; Earth, ocean, space; Exact sciences and technology; Geophysics: general, magnetic, electric and thermic methods and properties; Internal geophysics; Magnetic and electric properties; Permittivity (dielectric function); Physics
• ISSN: 0022-3727; 1361-6463
• DOI: 10.1088/0022-3727/37/5/019

Electrical properties of rare earth elements (REEs) in some geological materials were characterized during the upgrading of monazite from Egyptian black sand. It has been found that there was a significant relationship between concentrations of REEs and dc conductivity. Also, dielectric constant, dielectric loss, polarization, relaxation time and resonance frequency of samples containing REEs, were measured at a frequency range up to 1 MHz. From these measurements, it has been found that the values of electrical conductivity, resonance frequency and dielectric polarization are inversely proportional to the concentration of REEs. For most relations, the correlation coefficients were found to be better than 99%.