Electrical and magnetic properties of Er2(WO4)3
- 7 September 1975
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 8 (17) , 2745-2748
- https://doi.org/10.1088/0022-3719/8/17/014
Abstract
Measurements of the electrical conductivity, dielectric constant and magnetic susceptibility of pellets of erbium tungstate are reported for the temperature range 300 to 1000K. The known phase transition near 600K is in evidence in all these measurements. The conductivity data for T>600K have been analysed in terms of an exponential relation sigma = sigma 0 exp (-Eg/2kT), giving sigma 0=8.892*102 ohm-1 cm-1 and Eg=1.52 eV. There is a weak dispersion in the dielectric constant at around 104 Hz and a rapid increase above 600K. The high-temperature data for the susceptibility obey a Curie-Weiss law that gives a value of 9.50 Bohr magneton for Er3+ ions and a (ferromagnetic) Curie temperature of 160K.Keywords
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