Volume no :15, Issue no: 2, April (2017)

MAGNETIC PROPERTIES OF THE COBALTITES-GALLATES OF SAMARIUM IN THE TEMPERATURE RANGE 5-300K

Author's: A. A. Glinskaya, L. A. Bashkirov and G. S. Petrov
Pages: [55] - [75]
Received Date: March 14, 2017; Revised March 24, 2017
Submitted by:
DOI: http://dx.doi.org/10.18642/jmseat_7100121796

Abstract

Using a solid-state reaction method the ceramic samples of the cobaltites-gallates of samarium were synthesized. In these samples a magnetic dilution of the ions by diamagnetic ions took place. The parameters of the crystal lattice were determined. Molar magnetic susceptibility of was investigated at 5-300K in a magnetic field of 0.8 T. Analysis of the results obtained showed that in the temperature range 10-60K the effective magnetic moment of the ions practically didn’t depend on the x and its value was less than the theoretical value indicating the “partial freezing” of the orbital magnetic moment by the crystal field of the perovskite structure. Temperature-independent contribution in increases at growth of x at 10-60K. Increase of for at growth of x presumably is due to the increase of temperature independent Van-Vleck paramagnetism of ions rather than transition of the ions in paramagnetic state.

Keywords

perovskite, cobaltites-gallates of samarium, magnetic susceptibility, effective magnetic moment, Van-Vlieck polarization paramagnetism.